Current Dev State

static/js/ketcher2/node_modules/eslint/lib/rules/accessor-pairs.js

@@ -0,0 +1,156 @@
+/**
+ * @fileoverview Rule to flag wrapping non-iife in parens
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is an `Identifier` node which was named a given name.
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - An expected name of the node.
+ * @returns {boolean} `true` if the node is an `Identifier` node which was named as expected.
+ */
+function isIdentifier(node, name) {
+    return node.type === "Identifier" && node.name === name;
+}
+
+/**
+ * Checks whether or not a given node is an argument of a specified method call.
+ * @param {ASTNode} node - A node to check.
+ * @param {number} index - An expected index of the node in arguments.
+ * @param {string} object - An expected name of the object of the method.
+ * @param {string} property - An expected name of the method.
+ * @returns {boolean} `true` if the node is an argument of the specified method call.
+ */
+function isArgumentOfMethodCall(node, index, object, property) {
+    const parent = node.parent;
+
+    return (
+        parent.type === "CallExpression" &&
+        parent.callee.type === "MemberExpression" &&
+        parent.callee.computed === false &&
+        isIdentifier(parent.callee.object, object) &&
+        isIdentifier(parent.callee.property, property) &&
+        parent.arguments[index] === node
+    );
+}
+
+/**
+ * Checks whether or not a given node is a property descriptor.
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node is a property descriptor.
+ */
+function isPropertyDescriptor(node) {
+
+    // Object.defineProperty(obj, "foo", {set: ...})
+    if (isArgumentOfMethodCall(node, 2, "Object", "defineProperty") ||
+        isArgumentOfMethodCall(node, 2, "Reflect", "defineProperty")
+    ) {
+        return true;
+    }
+
+    /*
+     * Object.defineProperties(obj, {foo: {set: ...}})
+     * Object.create(proto, {foo: {set: ...}})
+     */
+    node = node.parent.parent;
+
+    return node.type === "ObjectExpression" && (
+        isArgumentOfMethodCall(node, 1, "Object", "create") ||
+        isArgumentOfMethodCall(node, 1, "Object", "defineProperties")
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce getter and setter pairs in objects",
+            category: "Best Practices",
+            recommended: false
+        },
+        schema: [{
+            type: "object",
+            properties: {
+                getWithoutSet: {
+                    type: "boolean"
+                },
+                setWithoutGet: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+    create(context) {
+        const config = context.options[0] || {};
+        const checkGetWithoutSet = config.getWithoutSet === true;
+        const checkSetWithoutGet = config.setWithoutGet !== false;
+
+        /**
+         * Checks a object expression to see if it has setter and getter both present or none.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkLonelySetGet(node) {
+            let isSetPresent = false;
+            let isGetPresent = false;
+            const isDescriptor = isPropertyDescriptor(node);
+
+            for (let i = 0, end = node.properties.length; i < end; i++) {
+                const property = node.properties[i];
+
+                let propToCheck = "";
+
+                if (property.kind === "init") {
+                    if (isDescriptor && !property.computed) {
+                        propToCheck = property.key.name;
+                    }
+                } else {
+                    propToCheck = property.kind;
+                }
+
+                switch (propToCheck) {
+                    case "set":
+                        isSetPresent = true;
+                        break;
+
+                    case "get":
+                        isGetPresent = true;
+                        break;
+
+                    default:
+
+                        // Do nothing
+                }
+
+                if (isSetPresent && isGetPresent) {
+                    break;
+                }
+            }
+
+            if (checkSetWithoutGet && isSetPresent && !isGetPresent) {
+                context.report({ node, message: "Getter is not present." });
+            } else if (checkGetWithoutSet && isGetPresent && !isSetPresent) {
+                context.report({ node, message: "Setter is not present." });
+            }
+        }
+
+        return {
+            ObjectExpression(node) {
+                if (checkSetWithoutGet || checkGetWithoutSet) {
+                    checkLonelySetGet(node);
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/array-bracket-spacing.js

@@ -0,0 +1,229 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside of array brackets.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing inside array brackets",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "whitespace",
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    singleValue: {
+                        type: "boolean"
+                    },
+                    objectsInArrays: {
+                        type: "boolean"
+                    },
+                    arraysInArrays: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+    create(context) {
+        const spaced = context.options[0] === "always",
+            sourceCode = context.getSourceCode();
+
+        /**
+         * Determines whether an option is set, relative to the spacing option.
+         * If spaced is "always", then check whether option is set to false.
+         * If spaced is "never", then check whether option is set to true.
+         * @param {Object} option - The option to exclude.
+         * @returns {boolean} Whether or not the property is excluded.
+         */
+        function isOptionSet(option) {
+            return context.options[1] ? context.options[1][option] === !spaced : false;
+        }
+
+        const options = {
+            spaced,
+            singleElementException: isOptionSet("singleValue"),
+            objectsInArraysException: isOptionSet("objectsInArrays"),
+            arraysInArraysException: isOptionSet("arraysInArrays")
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+        * Reports that there shouldn't be a space after the first token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportNoBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "There should be no space after '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    const nextToken = sourceCode.getTokenAfter(token);
+
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+        * Reports that there shouldn't be a space before the last token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportNoEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "There should be no space before '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    const previousToken = sourceCode.getTokenBefore(token);
+
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+        * Reports that there should be a space after the first token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "A space is required after '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+        * Reports that there should be a space before the last token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "A space is required before '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+        * Determines if a node is an object type
+        * @param {ASTNode} node - The node to check.
+        * @returns {boolean} Whether or not the node is an object type.
+        */
+        function isObjectType(node) {
+            return node && (node.type === "ObjectExpression" || node.type === "ObjectPattern");
+        }
+
+        /**
+        * Determines if a node is an array type
+        * @param {ASTNode} node - The node to check.
+        * @returns {boolean} Whether or not the node is an array type.
+        */
+        function isArrayType(node) {
+            return node && (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+        }
+
+        /**
+         * Validates the spacing around array brackets
+         * @param {ASTNode} node - The node we're checking for spacing
+         * @returns {void}
+         */
+        function validateArraySpacing(node) {
+            if (options.spaced && node.elements.length === 0) {
+                return;
+            }
+
+            const first = sourceCode.getFirstToken(node),
+                second = sourceCode.getFirstToken(node, 1),
+                last = node.typeAnnotation
+                    ? sourceCode.getTokenBefore(node.typeAnnotation)
+                    : sourceCode.getLastToken(node),
+                penultimate = sourceCode.getTokenBefore(last),
+                firstElement = node.elements[0],
+                lastElement = node.elements[node.elements.length - 1];
+
+            const openingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(firstElement) ||
+                options.arraysInArraysException && isArrayType(firstElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            const closingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(lastElement) ||
+                options.arraysInArraysException && isArrayType(lastElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            if (astUtils.isTokenOnSameLine(first, second)) {
+                if (openingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportRequiredBeginningSpace(node, first);
+                }
+                if (!openingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportNoBeginningSpace(node, first);
+                }
+            }
+
+            if (first !== penultimate && astUtils.isTokenOnSameLine(penultimate, last)) {
+                if (closingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportRequiredEndingSpace(node, last);
+                }
+                if (!closingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportNoEndingSpace(node, last);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrayPattern: validateArraySpacing,
+            ArrayExpression: validateArraySpacing
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/array-callback-return.js

@@ -0,0 +1,228 @@
+/**
+ * @fileoverview Rule to enforce return statements in callbacks of array's methods
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/;
+const TARGET_METHODS = /^(?:every|filter|find(?:Index)?|map|reduce(?:Right)?|some|sort)$/;
+
+/**
+ * Checks a given code path segment is reachable.
+ *
+ * @param {CodePathSegment} segment - A segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Gets a readable location.
+ *
+ * - FunctionExpression -> the function name or `function` keyword.
+ * - ArrowFunctionExpression -> `=>` token.
+ *
+ * @param {ASTNode} node - A function node to get.
+ * @param {SourceCode} sourceCode - A source code to get tokens.
+ * @returns {ASTNode|Token} The node or the token of a location.
+ */
+function getLocation(node, sourceCode) {
+    if (node.type === "ArrowFunctionExpression") {
+        return sourceCode.getTokenBefore(node.body);
+    }
+    return node.id || node;
+}
+
+/**
+ * Checks a given node is a MemberExpression node which has the specified name's
+ * property.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node is a MemberExpression node which has
+ *      the specified name's property
+ */
+function isTargetMethod(node) {
+    return (
+        node.type === "MemberExpression" &&
+        TARGET_METHODS.test(astUtils.getStaticPropertyName(node) || "")
+    );
+}
+
+/**
+ * Checks whether or not a given node is a function expression which is the
+ * callback of an array method.
+ *
+ * @param {ASTNode} node - A node to check. This is one of
+ *      FunctionExpression or ArrowFunctionExpression.
+ * @returns {boolean} `true` if the node is the callback of an array method.
+ */
+function isCallbackOfArrayMethod(node) {
+    while (node) {
+        const parent = node.parent;
+
+        switch (parent.type) {
+
+            /*
+             * Looks up the destination. e.g.,
+             * foo.every(nativeFoo || function foo() { ... });
+             */
+            case "LogicalExpression":
+            case "ConditionalExpression":
+                node = parent;
+                break;
+
+            // If the upper function is IIFE, checks the destination of the return value.
+            // e.g.
+            //   foo.every((function() {
+            //     // setup...
+            //     return function callback() { ... };
+            //   })());
+            case "ReturnStatement": {
+                const func = astUtils.getUpperFunction(parent);
+
+                if (func === null || !astUtils.isCallee(func)) {
+                    return false;
+                }
+                node = func.parent;
+                break;
+            }
+
+            // e.g.
+            //   Array.from([], function() {});
+            //   list.every(function() {});
+            case "CallExpression":
+                if (astUtils.isArrayFromMethod(parent.callee)) {
+                    return (
+                        parent.arguments.length >= 2 &&
+                        parent.arguments[1] === node
+                    );
+                }
+                if (isTargetMethod(parent.callee)) {
+                    return (
+                        parent.arguments.length >= 1 &&
+                        parent.arguments[0] === node
+                    );
+                }
+                return false;
+
+            // Otherwise this node is not target.
+            default:
+                return false;
+        }
+    }
+
+    /* istanbul ignore next: unreachable */
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce `return` statements in callbacks of array methods",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        let funcInfo = {
+            upper: null,
+            codePath: null,
+            hasReturn: false,
+            shouldCheck: false,
+            node: null
+        };
+
+        /**
+         * Checks whether or not the last code path segment is reachable.
+         * Then reports this function if the segment is reachable.
+         *
+         * If the last code path segment is reachable, there are paths which are not
+         * returned or thrown.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            if (funcInfo.shouldCheck &&
+                funcInfo.codePath.currentSegments.some(isReachable)
+            ) {
+                context.report({
+                    node,
+                    loc: getLocation(node, context.getSourceCode()).loc.start,
+                    message: funcInfo.hasReturn
+                        ? "Expected to return a value at the end of {{name}}."
+                        : "Expected to return a value in {{name}}.",
+                    data: {
+                        name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                    }
+                });
+            }
+        }
+
+        return {
+
+            // Stacks this function's information.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    shouldCheck:
+                        TARGET_NODE_TYPE.test(node.type) &&
+                        node.body.type === "BlockStatement" &&
+                        isCallbackOfArrayMethod(node) &&
+                        !node.async &&
+                        !node.generator,
+                    node
+                };
+            },
+
+            // Pops this function's information.
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            // Checks the return statement is valid.
+            ReturnStatement(node) {
+                if (funcInfo.shouldCheck) {
+                    funcInfo.hasReturn = true;
+
+                    if (!node.argument) {
+                        context.report({
+                            node,
+                            message: "{{name}} expected a return value.",
+                            data: {
+                                name: lodash.upperFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
+                            }
+                        });
+                    }
+                }
+            },
+
+            // Reports a given function if the last path is reachable.
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/arrow-body-style.js

@@ -0,0 +1,162 @@
+/**
+ * @fileoverview Rule to require braces in arrow function body.
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require braces around arrow function bodies",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["as-needed"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                requireReturnForObjectLiteral: { type: "boolean" }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const options = context.options;
+        const always = options[0] === "always";
+        const asNeeded = !options[0] || options[0] === "as-needed";
+        const never = options[0] === "never";
+        const requireReturnForObjectLiteral = options[1] && options[1].requireReturnForObjectLiteral;
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Determines whether a arrow function body needs braces
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function validate(node) {
+            const arrowBody = node.body;
+
+            if (arrowBody.type === "BlockStatement") {
+                const blockBody = arrowBody.body;
+
+                if (blockBody.length !== 1 && !never) {
+                    return;
+                }
+
+                if (asNeeded && requireReturnForObjectLiteral && blockBody[0].type === "ReturnStatement" &&
+                    blockBody[0].argument && blockBody[0].argument.type === "ObjectExpression") {
+                    return;
+                }
+
+                if (never || asNeeded && blockBody[0].type === "ReturnStatement") {
+                    context.report({
+                        node,
+                        loc: arrowBody.loc.start,
+                        message: "Unexpected block statement surrounding arrow body.",
+                        fix(fixer) {
+                            if (blockBody.length !== 1 || blockBody[0].type !== "ReturnStatement" || !blockBody[0].argument) {
+                                return null;
+                            }
+
+                            const sourceText = sourceCode.getText();
+                            const returnKeyword = sourceCode.getFirstToken(blockBody[0]);
+                            const firstValueToken = sourceCode.getTokenAfter(returnKeyword);
+                            let lastValueToken = sourceCode.getLastToken(blockBody[0]);
+
+                            if (astUtils.isSemicolonToken(lastValueToken)) {
+
+                                /* The last token of the returned value is the last token of the ReturnExpression (if
+                                 * the ReturnExpression has no semicolon), or the second-to-last token (if the ReturnExpression
+                                 * has a semicolon).
+                                 */
+                                lastValueToken = sourceCode.getTokenBefore(lastValueToken);
+                            }
+
+                            const tokenAfterArrowBody = sourceCode.getTokenAfter(arrowBody);
+
+                            if (tokenAfterArrowBody && tokenAfterArrowBody.type === "Punctuator" && /^[([/`+-]/.test(tokenAfterArrowBody.value)) {
+
+                                // Don't do a fix if the next token would cause ASI issues when preceded by the returned value.
+                                return null;
+                            }
+
+                            const textBeforeReturn = sourceText.slice(arrowBody.range[0] + 1, returnKeyword.range[0]);
+                            const textBetweenReturnAndValue = sourceText.slice(returnKeyword.range[1], firstValueToken.range[0]);
+                            const rawReturnValueText = sourceText.slice(firstValueToken.range[0], lastValueToken.range[1]);
+                            const returnValueText = astUtils.isOpeningBraceToken(firstValueToken) ? `(${rawReturnValueText})` : rawReturnValueText;
+                            const textAfterValue = sourceText.slice(lastValueToken.range[1], blockBody[0].range[1] - 1);
+                            const textAfterReturnStatement = sourceText.slice(blockBody[0].range[1], arrowBody.range[1] - 1);
+
+                            /*
+                             * For fixes that only contain spaces around the return value, remove the extra spaces.
+                             * This avoids ugly fixes that end up with extra spaces after the arrow, e.g. `() =>   0 ;`
+                             */
+                            return fixer.replaceText(
+                                arrowBody,
+                                (textBeforeReturn + textBetweenReturnAndValue).replace(/^\s*$/, "") + returnValueText + (textAfterValue + textAfterReturnStatement).replace(/^\s*$/, "")
+                            );
+                        }
+                    });
+                }
+            } else {
+                if (always || (asNeeded && requireReturnForObjectLiteral && arrowBody.type === "ObjectExpression")) {
+                    context.report({
+                        node,
+                        loc: arrowBody.loc.start,
+                        message: "Expected block statement surrounding arrow body.",
+                        fix(fixer) {
+                            const lastTokenBeforeBody = sourceCode.getLastTokenBetween(sourceCode.getFirstToken(node), arrowBody, astUtils.isNotOpeningParenToken);
+                            const firstBodyToken = sourceCode.getTokenAfter(lastTokenBeforeBody);
+
+                            return fixer.replaceTextRange(
+                                [firstBodyToken.range[0], node.range[1]],
+                                `{return ${sourceCode.getText().slice(firstBodyToken.range[0], node.range[1])}}`
+                            );
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: validate
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/arrow-parens.js

@@ -0,0 +1,150 @@
+/**
+ * @fileoverview Rule to require parens in arrow function arguments.
+ * @author Jxck
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require parentheses around arrow function arguments",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["always", "as-needed"]
+            },
+            {
+                type: "object",
+                properties: {
+                    requireForBlockBody: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const message = "Expected parentheses around arrow function argument.";
+        const asNeededMessage = "Unexpected parentheses around single function argument.";
+        const asNeeded = context.options[0] === "as-needed";
+        const requireForBlockBodyMessage = "Unexpected parentheses around single function argument having a body with no curly braces";
+        const requireForBlockBodyNoParensMessage = "Expected parentheses around arrow function argument having a body with curly braces.";
+        const requireForBlockBody = asNeeded && context.options[1] && context.options[1].requireForBlockBody === true;
+
+        const sourceCode = context.getSourceCode();
+
+
+        /**
+         * Determines whether a arrow function argument end with `)`
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function parens(node) {
+            const token = sourceCode.getFirstToken(node, node.async ? 1 : 0);
+
+            // "as-needed", { "requireForBlockBody": true }: x => x
+            if (
+                requireForBlockBody &&
+                node.params.length === 1 &&
+                node.params[0].type === "Identifier" &&
+                !node.params[0].typeAnnotation &&
+                node.body.type !== "BlockStatement" &&
+                !node.returnType
+            ) {
+                if (astUtils.isOpeningParenToken(token)) {
+                    context.report({
+                        node,
+                        message: requireForBlockBodyMessage,
+                        fix(fixer) {
+                            const paramToken = context.getTokenAfter(token);
+                            const closingParenToken = context.getTokenAfter(paramToken);
+
+                            return fixer.replaceTextRange([
+                                token.range[0],
+                                closingParenToken.range[1]
+                            ], paramToken.value);
+                        }
+                    });
+                }
+                return;
+            }
+
+            if (
+                requireForBlockBody &&
+                node.body.type === "BlockStatement"
+            ) {
+                if (!astUtils.isOpeningParenToken(token)) {
+                    context.report({
+                        node,
+                        message: requireForBlockBodyNoParensMessage,
+                        fix(fixer) {
+                            return fixer.replaceText(token, `(${token.value})`);
+                        }
+                    });
+                }
+                return;
+            }
+
+            // "as-needed": x => x
+            if (asNeeded &&
+                node.params.length === 1 &&
+                node.params[0].type === "Identifier" &&
+                !node.params[0].typeAnnotation &&
+                !node.returnType
+            ) {
+                if (astUtils.isOpeningParenToken(token)) {
+                    context.report({
+                        node,
+                        message: asNeededMessage,
+                        fix(fixer) {
+                            const paramToken = context.getTokenAfter(token);
+                            const closingParenToken = context.getTokenAfter(paramToken);
+
+                            return fixer.replaceTextRange([
+                                token.range[0],
+                                closingParenToken.range[1]
+                            ], paramToken.value);
+                        }
+                    });
+                }
+                return;
+            }
+
+            if (token.type === "Identifier") {
+                const after = sourceCode.getTokenAfter(token);
+
+                // (x) => x
+                if (after.value !== ")") {
+                    context.report({
+                        node,
+                        message,
+                        fix(fixer) {
+                            return fixer.replaceText(token, `(${token.value})`);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: parens
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/arrow-spacing.js

@@ -0,0 +1,149 @@
+/**
+ * @fileoverview Rule to define spacing before/after arrow function's arrow.
+ * @author Jxck
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing before and after the arrow in arrow functions",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean"
+                    },
+                    after: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        // merge rules with default
+        const rule = { before: true, after: true },
+            option = context.options[0] || {};
+
+        rule.before = option.before !== false;
+        rule.after = option.after !== false;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Get tokens of arrow(`=>`) and before/after arrow.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {Object} Tokens of arrow and before/after arrow.
+         */
+        function getTokens(node) {
+            const arrow = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+
+            return {
+                before: sourceCode.getTokenBefore(arrow),
+                arrow,
+                after: sourceCode.getTokenAfter(arrow)
+            };
+        }
+
+        /**
+         * Count spaces before/after arrow(`=>`) token.
+         * @param {Object} tokens Tokens before/after arrow.
+         * @returns {Object} count of space before/after arrow.
+         */
+        function countSpaces(tokens) {
+            const before = tokens.arrow.range[0] - tokens.before.range[1];
+            const after = tokens.after.range[0] - tokens.arrow.range[1];
+
+            return { before, after };
+        }
+
+        /**
+         * Determines whether space(s) before after arrow(`=>`) is satisfy rule.
+         * if before/after value is `true`, there should be space(s).
+         * if before/after value is `false`, there should be no space.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function spaces(node) {
+            const tokens = getTokens(node);
+            const countSpace = countSpaces(tokens);
+
+            if (rule.before) {
+
+                // should be space(s) before arrow
+                if (countSpace.before === 0) {
+                    context.report({
+                        node: tokens.before,
+                        message: "Missing space before =>.",
+                        fix(fixer) {
+                            return fixer.insertTextBefore(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space before arrow
+                if (countSpace.before > 0) {
+                    context.report({
+                        node: tokens.before,
+                        message: "Unexpected space before =>.",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.before.range[1], tokens.arrow.range[0]]);
+                        }
+                    });
+                }
+            }
+
+            if (rule.after) {
+
+                // should be space(s) after arrow
+                if (countSpace.after === 0) {
+                    context.report({
+                        node: tokens.after,
+                        message: "Missing space after =>.",
+                        fix(fixer) {
+                            return fixer.insertTextAfter(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space after arrow
+                if (countSpace.after > 0) {
+                    context.report({
+                        node: tokens.after,
+                        message: "Unexpected space after =>.",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.arrow.range[1], tokens.after.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: spaces
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/block-scoped-var.js

@@ -0,0 +1,115 @@
+/**
+ * @fileoverview Rule to check for "block scoped" variables by binding context
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce the use of variables within the scope they are defined",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        let stack = [];
+
+        /**
+         * Makes a block scope.
+         * @param {ASTNode} node - A node of a scope.
+         * @returns {void}
+         */
+        function enterScope(node) {
+            stack.push(node.range);
+        }
+
+        /**
+         * Pops the last block scope.
+         * @returns {void}
+         */
+        function exitScope() {
+            stack.pop();
+        }
+
+        /**
+         * Reports a given reference.
+         * @param {escope.Reference} reference - A reference to report.
+         * @returns {void}
+         */
+        function report(reference) {
+            const identifier = reference.identifier;
+
+            context.report({ node: identifier, message: "'{{name}}' used outside of binding context.", data: { name: identifier.name } });
+        }
+
+        /**
+         * Finds and reports references which are outside of valid scopes.
+         * @param {ASTNode} node - A node to get variables.
+         * @returns {void}
+         */
+        function checkForVariables(node) {
+            if (node.kind !== "var") {
+                return;
+            }
+
+            // Defines a predicate to check whether or not a given reference is outside of valid scope.
+            const scopeRange = stack[stack.length - 1];
+
+            /**
+             * Check if a reference is out of scope
+             * @param {ASTNode} reference node to examine
+             * @returns {boolean} True is its outside the scope
+             * @private
+             */
+            function isOutsideOfScope(reference) {
+                const idRange = reference.identifier.range;
+
+                return idRange[0] < scopeRange[0] || idRange[1] > scopeRange[1];
+            }
+
+            // Gets declared variables, and checks its references.
+            const variables = context.getDeclaredVariables(node);
+
+            for (let i = 0; i < variables.length; ++i) {
+
+                // Reports.
+                variables[i]
+                    .references
+                    .filter(isOutsideOfScope)
+                    .forEach(report);
+            }
+        }
+
+        return {
+            Program(node) {
+                stack = [node.range];
+            },
+
+            // Manages scopes.
+            BlockStatement: enterScope,
+            "BlockStatement:exit": exitScope,
+            ForStatement: enterScope,
+            "ForStatement:exit": exitScope,
+            ForInStatement: enterScope,
+            "ForInStatement:exit": exitScope,
+            ForOfStatement: enterScope,
+            "ForOfStatement:exit": exitScope,
+            SwitchStatement: enterScope,
+            "SwitchStatement:exit": exitScope,
+            CatchClause: enterScope,
+            "CatchClause:exit": exitScope,
+
+            // Finds and reports references which are outside of valid scope.
+            VariableDeclaration: checkForVariables
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/block-spacing.js

@@ -0,0 +1,137 @@
+/**
+ * @fileoverview A rule to disallow or enforce spaces inside of single line blocks.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const util = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing inside single-line blocks",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            { enum: ["always", "never"] }
+        ]
+    },
+
+    create(context) {
+        const always = (context.options[0] !== "never"),
+            message = always ? "Requires a space" : "Unexpected space(s)",
+            sourceCode = context.getSourceCode();
+
+        /**
+         * Gets the open brace token from a given node.
+         * @param {ASTNode} node - A BlockStatement/SwitchStatement node to get.
+         * @returns {Token} The token of the open brace.
+         */
+        function getOpenBrace(node) {
+            if (node.type === "SwitchStatement") {
+                if (node.cases.length > 0) {
+                    return sourceCode.getTokenBefore(node.cases[0]);
+                }
+                return sourceCode.getLastToken(node, 1);
+            }
+            return sourceCode.getFirstToken(node);
+        }
+
+        /**
+         * Checks whether or not:
+         *   - given tokens are on same line.
+         *   - there is/isn't a space between given tokens.
+         * @param {Token} left - A token to check.
+         * @param {Token} right - The token which is next to `left`.
+         * @returns {boolean}
+         *    When the option is `"always"`, `true` if there are one or more spaces between given tokens.
+         *    When the option is `"never"`, `true` if there are not any spaces between given tokens.
+         *    If given tokens are not on same line, it's always `true`.
+         */
+        function isValid(left, right) {
+            return (
+                !util.isTokenOnSameLine(left, right) ||
+                sourceCode.isSpaceBetweenTokens(left, right) === always
+            );
+        }
+
+        /**
+         * Reports invalid spacing style inside braces.
+         * @param {ASTNode} node - A BlockStatement/SwitchStatement node to get.
+         * @returns {void}
+         */
+        function checkSpacingInsideBraces(node) {
+
+            // Gets braces and the first/last token of content.
+            const openBrace = getOpenBrace(node);
+            const closeBrace = sourceCode.getLastToken(node);
+            const firstToken = sourceCode.getTokenAfter(openBrace, { includeComments: true });
+            const lastToken = sourceCode.getTokenBefore(closeBrace, { includeComments: true });
+
+            // Skip if the node is invalid or empty.
+            if (openBrace.type !== "Punctuator" ||
+                openBrace.value !== "{" ||
+                closeBrace.type !== "Punctuator" ||
+                closeBrace.value !== "}" ||
+                firstToken === closeBrace
+            ) {
+                return;
+            }
+
+            // Skip line comments for option never
+            if (!always && firstToken.type === "Line") {
+                return;
+            }
+
+            // Check.
+            if (!isValid(openBrace, firstToken)) {
+                context.report({
+                    node,
+                    loc: openBrace.loc.start,
+                    message: "{{message}} after '{'.",
+                    data: {
+                        message
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextBefore(firstToken, " ");
+                        }
+
+                        return fixer.removeRange([openBrace.range[1], firstToken.range[0]]);
+                    }
+                });
+            }
+            if (!isValid(lastToken, closeBrace)) {
+                context.report({
+                    node,
+                    loc: closeBrace.loc.start,
+                    message: "{{message}} before '}'.",
+                    data: {
+                        message
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextAfter(lastToken, " ");
+                        }
+
+                        return fixer.removeRange([lastToken.range[1], closeBrace.range[0]]);
+                    }
+                });
+            }
+        }
+
+        return {
+            BlockStatement: checkSpacingInsideBraces,
+            SwitchStatement: checkSpacingInsideBraces
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/brace-style.js

@@ -0,0 +1,180 @@
+/**
+ * @fileoverview Rule to flag block statements that do not use the one true brace style
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent brace style for blocks",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                enum: ["1tbs", "stroustrup", "allman"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowSingleLine: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "whitespace"
+    },
+
+    create(context) {
+        const style = context.options[0] || "1tbs",
+            params = context.options[1] || {},
+            sourceCode = context.getSourceCode();
+
+        const OPEN_MESSAGE = "Opening curly brace does not appear on the same line as controlling statement.",
+            OPEN_MESSAGE_ALLMAN = "Opening curly brace appears on the same line as controlling statement.",
+            BODY_MESSAGE = "Statement inside of curly braces should be on next line.",
+            CLOSE_MESSAGE = "Closing curly brace does not appear on the same line as the subsequent block.",
+            CLOSE_MESSAGE_SINGLE = "Closing curly brace should be on the same line as opening curly brace or on the line after the previous block.",
+            CLOSE_MESSAGE_STROUSTRUP_ALLMAN = "Closing curly brace appears on the same line as the subsequent block.";
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+        * Fixes a place where a newline unexpectedly appears
+        * @param {Token} firstToken The token before the unexpected newline
+        * @param {Token} secondToken The token after the unexpected newline
+        * @returns {Function} A fixer function to remove the newlines between the tokens
+        */
+        function removeNewlineBetween(firstToken, secondToken) {
+            const textRange = [firstToken.range[1], secondToken.range[0]];
+            const textBetween = sourceCode.text.slice(textRange[0], textRange[1]);
+            const NEWLINE_REGEX = astUtils.createGlobalLinebreakMatcher();
+
+            // Don't do a fix if there is a comment between the tokens
+            return fixer => fixer.replaceTextRange(textRange, textBetween.trim() ? null : textBetween.replace(NEWLINE_REGEX, ""));
+        }
+
+        /**
+        * Validates a pair of curly brackets based on the user's config
+        * @param {Token} openingCurly The opening curly bracket
+        * @param {Token} closingCurly The closing curly bracket
+        * @returns {void}
+        */
+        function validateCurlyPair(openingCurly, closingCurly) {
+            const tokenBeforeOpeningCurly = sourceCode.getTokenBefore(openingCurly);
+            const tokenAfterOpeningCurly = sourceCode.getTokenAfter(openingCurly);
+            const tokenBeforeClosingCurly = sourceCode.getTokenBefore(closingCurly);
+            const singleLineException = params.allowSingleLine && astUtils.isTokenOnSameLine(openingCurly, closingCurly);
+
+            if (style !== "allman" && !astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly)) {
+                context.report({
+                    node: openingCurly,
+                    message: OPEN_MESSAGE,
+                    fix: removeNewlineBetween(tokenBeforeOpeningCurly, openingCurly)
+                });
+            }
+
+            if (style === "allman" && astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly) && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    message: OPEN_MESSAGE_ALLMAN,
+                    fix: fixer => fixer.insertTextBefore(openingCurly, "\n")
+                });
+            }
+
+            if (astUtils.isTokenOnSameLine(openingCurly, tokenAfterOpeningCurly) && tokenAfterOpeningCurly !== closingCurly && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    message: BODY_MESSAGE,
+                    fix: fixer => fixer.insertTextAfter(openingCurly, "\n")
+                });
+            }
+
+            if (tokenBeforeClosingCurly !== openingCurly && !singleLineException && astUtils.isTokenOnSameLine(tokenBeforeClosingCurly, closingCurly)) {
+                context.report({
+                    node: closingCurly,
+                    message: CLOSE_MESSAGE_SINGLE,
+                    fix: fixer => fixer.insertTextBefore(closingCurly, "\n")
+                });
+            }
+        }
+
+        /**
+        * Validates the location of a token that appears before a keyword (e.g. a newline before `else`)
+        * @param {Token} curlyToken The closing curly token. This is assumed to precede a keyword token (such as `else` or `finally`).
+        * @returns {void}
+        */
+        function validateCurlyBeforeKeyword(curlyToken) {
+            const keywordToken = sourceCode.getTokenAfter(curlyToken);
+
+            if (style === "1tbs" && !astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    message: CLOSE_MESSAGE,
+                    fix: removeNewlineBetween(curlyToken, keywordToken)
+                });
+            }
+
+            if (style !== "1tbs" && astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    message: CLOSE_MESSAGE_STROUSTRUP_ALLMAN,
+                    fix: fixer => fixer.insertTextAfter(curlyToken, "\n")
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            BlockStatement(node) {
+                if (!astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type)) {
+                    validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+                }
+            },
+            ClassBody(node) {
+                validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+            },
+            SwitchStatement(node) {
+                const closingCurly = sourceCode.getLastToken(node);
+                const openingCurly = sourceCode.getTokenBefore(node.cases.length ? node.cases[0] : closingCurly);
+
+                validateCurlyPair(openingCurly, closingCurly);
+            },
+            IfStatement(node) {
+                if (node.consequent.type === "BlockStatement" && node.alternate) {
+
+                    // Handle the keyword after the `if` block (before `else`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.consequent));
+                }
+            },
+            TryStatement(node) {
+
+                // Handle the keyword after the `try` block (before `catch` or `finally`)
+                validateCurlyBeforeKeyword(sourceCode.getLastToken(node.block));
+
+                if (node.handler && node.finalizer) {
+
+                    // Handle the keyword after the `catch` block (before `finally`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.handler.body));
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/callback-return.js

@@ -0,0 +1,174 @@
+/**
+ * @fileoverview Enforce return after a callback.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `return` statements after callbacks",
+            category: "Node.js and CommonJS",
+            recommended: false
+        },
+
+        schema: [{
+            type: "array",
+            items: { type: "string" }
+        }]
+    },
+
+    create(context) {
+
+        const callbacks = context.options[0] || ["callback", "cb", "next"],
+            sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Find the closest parent matching a list of types.
+         * @param {ASTNode} node The node whose parents we are searching
+         * @param {Array} types The node types to match
+         * @returns {ASTNode} The matched node or undefined.
+         */
+        function findClosestParentOfType(node, types) {
+            if (!node.parent) {
+                return null;
+            }
+            if (types.indexOf(node.parent.type) === -1) {
+                return findClosestParentOfType(node.parent, types);
+            }
+            return node.parent;
+        }
+
+        /**
+         * Check to see if a node contains only identifers
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} Whether or not the node contains only identifers
+         */
+        function containsOnlyIdentifiers(node) {
+            if (node.type === "Identifier") {
+                return true;
+            }
+
+            if (node.type === "MemberExpression") {
+                if (node.object.type === "Identifier") {
+                    return true;
+                } else if (node.object.type === "MemberExpression") {
+                    return containsOnlyIdentifiers(node.object);
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Check to see if a CallExpression is in our callback list.
+         * @param {ASTNode} node The node to check against our callback names list.
+         * @returns {boolean} Whether or not this function matches our callback name.
+         */
+        function isCallback(node) {
+            return containsOnlyIdentifiers(node.callee) && callbacks.indexOf(sourceCode.getText(node.callee)) > -1;
+        }
+
+        /**
+         * Determines whether or not the callback is part of a callback expression.
+         * @param {ASTNode} node The callback node
+         * @param {ASTNode} parentNode The expression node
+         * @returns {boolean} Whether or not this is part of a callback expression
+         */
+        function isCallbackExpression(node, parentNode) {
+
+            // ensure the parent node exists and is an expression
+            if (!parentNode || parentNode.type !== "ExpressionStatement") {
+                return false;
+            }
+
+            // cb()
+            if (parentNode.expression === node) {
+                return true;
+            }
+
+            // special case for cb && cb() and similar
+            if (parentNode.expression.type === "BinaryExpression" || parentNode.expression.type === "LogicalExpression") {
+                if (parentNode.expression.right === node) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            CallExpression(node) {
+
+                // if we're not a callback we can return
+                if (!isCallback(node)) {
+                    return;
+                }
+
+                // find the closest block, return or loop
+                const closestBlock = findClosestParentOfType(node, ["BlockStatement", "ReturnStatement", "ArrowFunctionExpression"]) || {};
+
+                // if our parent is a return we know we're ok
+                if (closestBlock.type === "ReturnStatement") {
+                    return;
+                }
+
+                // arrow functions don't always have blocks and implicitly return
+                if (closestBlock.type === "ArrowFunctionExpression") {
+                    return;
+                }
+
+                // block statements are part of functions and most if statements
+                if (closestBlock.type === "BlockStatement") {
+
+                    // find the last item in the block
+                    const lastItem = closestBlock.body[closestBlock.body.length - 1];
+
+                    // if the callback is the last thing in a block that might be ok
+                    if (isCallbackExpression(node, lastItem)) {
+
+                        const parentType = closestBlock.parent.type;
+
+                        // but only if the block is part of a function
+                        if (parentType === "FunctionExpression" ||
+                            parentType === "FunctionDeclaration" ||
+                            parentType === "ArrowFunctionExpression"
+                        ) {
+                            return;
+                        }
+
+                    }
+
+                    // ending a block with a return is also ok
+                    if (lastItem.type === "ReturnStatement") {
+
+                        // but only if the callback is immediately before
+                        if (isCallbackExpression(node, closestBlock.body[closestBlock.body.length - 2])) {
+                            return;
+                        }
+                    }
+
+                }
+
+                // as long as you're the child of a function at this point you should be asked to return
+                if (findClosestParentOfType(node, ["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"])) {
+                    context.report({ node, message: "Expected return with your callback function." });
+                }
+
+            }
+
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/camelcase.js

@@ -0,0 +1,143 @@
+/**
+ * @fileoverview Rule to flag non-camelcased identifiers
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce camelcase naming convention",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    properties: {
+                        enum: ["always", "never"]
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reported = [];
+        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+
+        /**
+         * Checks if a string contains an underscore and isn't all upper-case
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is underscored
+         * @private
+         */
+        function isUnderscored(name) {
+
+            // if there's an underscore, it might be A_CONSTANT, which is okay
+            return name.indexOf("_") > -1 && name !== name.toUpperCase();
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            if (reported.indexOf(node) < 0) {
+                reported.push(node);
+                context.report({ node, message: "Identifier '{{name}}' is not in camel case.", data: { name: node.name } });
+            }
+        }
+
+        const options = context.options[0] || {};
+        let properties = options.properties || "";
+
+        if (properties !== "always" && properties !== "never") {
+            properties = "always";
+        }
+
+        return {
+
+            Identifier(node) {
+
+                /*
+                 * Leading and trailing underscores are commonly used to flag
+                 * private/protected identifiers, strip them
+                 */
+                const name = node.name.replace(/^_+|_+$/g, ""),
+                    effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
+
+                // MemberExpressions get special rules
+                if (node.parent.type === "MemberExpression") {
+
+                    // "never" check properties
+                    if (properties === "never") {
+                        return;
+                    }
+
+                    // Always report underscored object names
+                    if (node.parent.object.type === "Identifier" &&
+                            node.parent.object.name === node.name &&
+                            isUnderscored(name)) {
+                        report(node);
+
+                    // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                            isUnderscored(name) &&
+                            (effectiveParent.right.type !== "MemberExpression" ||
+                            effectiveParent.left.type === "MemberExpression" &&
+                            effectiveParent.left.property.name === node.name)) {
+                        report(node);
+                    }
+
+                // Properties have their own rules
+                } else if (node.parent.type === "Property") {
+
+                    // "never" check properties
+                    if (properties === "never") {
+                        return;
+                    }
+
+                    if (node.parent.parent && node.parent.parent.type === "ObjectPattern" &&
+                            node.parent.key === node && node.parent.value !== node) {
+                        return;
+                    }
+
+                    if (isUnderscored(name) && !ALLOWED_PARENT_TYPES.has(effectiveParent.type)) {
+                        report(node);
+                    }
+
+                // Check if it's an import specifier
+                } else if (["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"].indexOf(node.parent.type) >= 0) {
+
+                    // Report only if the local imported identifier is underscored
+                    if (node.parent.local && node.parent.local.name === node.name && isUnderscored(name)) {
+                        report(node);
+                    }
+
+                // Report anything that is underscored that isn't a CallExpression
+                } else if (isUnderscored(name) && !ALLOWED_PARENT_TYPES.has(effectiveParent.type)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/capitalized-comments.js

@@ -0,0 +1,302 @@
+/**
+ * @fileoverview enforce or disallow capitalization of the first letter of a comment
+ * @author Kevin Partington
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const LETTER_PATTERN = require("../util/patterns/letters");
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const ALWAYS_MESSAGE = "Comments should not begin with a lowercase character",
+    NEVER_MESSAGE = "Comments should not begin with an uppercase character",
+    DEFAULT_IGNORE_PATTERN = astUtils.COMMENTS_IGNORE_PATTERN,
+    WHITESPACE = /\s/g,
+    MAYBE_URL = /^\s*[^:/?#\s]+:\/\/[^?#]/,    // TODO: Combine w/ max-len pattern?
+    DEFAULTS = {
+        ignorePattern: null,
+        ignoreInlineComments: false,
+        ignoreConsecutiveComments: false
+    };
+
+/*
+ * Base schema body for defining the basic capitalization rule, ignorePattern,
+ * and ignoreInlineComments values.
+ * This can be used in a few different ways in the actual schema.
+ */
+const SCHEMA_BODY = {
+    type: "object",
+    properties: {
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreInlineComments: {
+            type: "boolean"
+        },
+        ignoreConsecutiveComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+/**
+ * Get normalized options for either block or line comments from the given
+ * user-provided options.
+ * - If the user-provided options is just a string, returns a normalized
+ *   set of options using default values for all other options.
+ * - If the user-provided options is an object, then a normalized option
+ *   set is returned. Options specified in overrides will take priority
+ *   over options specified in the main options object, which will in
+ *   turn take priority over the rule's defaults.
+ *
+ * @param {Object|string} rawOptions The user-provided options.
+ * @param {string} which Either "line" or "block".
+ * @returns {Object} The normalized options.
+ */
+function getNormalizedOptions(rawOptions, which) {
+    if (!rawOptions) {
+        return Object.assign({}, DEFAULTS);
+    }
+
+    return Object.assign({}, DEFAULTS, rawOptions[which] || rawOptions);
+}
+
+/**
+ * Get normalized options for block and line comments.
+ *
+ * @param {Object|string} rawOptions The user-provided options.
+ * @returns {Object} An object with "Line" and "Block" keys and corresponding
+ * normalized options objects.
+ */
+function getAllNormalizedOptions(rawOptions) {
+    return {
+        Line: getNormalizedOptions(rawOptions, "line"),
+        Block: getNormalizedOptions(rawOptions, "block")
+    };
+}
+
+/**
+ * Creates a regular expression for each ignorePattern defined in the rule
+ * options.
+ *
+ * This is done in order to avoid invoking the RegExp constructor repeatedly.
+ *
+ * @param {Object} normalizedOptions The normalized rule options.
+ * @returns {void}
+ */
+function createRegExpForIgnorePatterns(normalizedOptions) {
+    Object.keys(normalizedOptions).forEach(key => {
+        const ignorePatternStr = normalizedOptions[key].ignorePattern;
+
+        if (ignorePatternStr) {
+            const regExp = RegExp(`^\\s*(?:${ignorePatternStr})`);
+
+            normalizedOptions[key].ignorePatternRegExp = regExp;
+        }
+    });
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce or disallow capitalization of the first letter of a comment",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "code",
+        schema: [
+            { enum: ["always", "never"] },
+            {
+                oneOf: [
+                    SCHEMA_BODY,
+                    {
+                        type: "object",
+                        properties: {
+                            line: SCHEMA_BODY,
+                            block: SCHEMA_BODY
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const capitalize = context.options[0] || "always",
+            normalizedOptions = getAllNormalizedOptions(context.options[1]),
+            sourceCode = context.getSourceCode();
+
+        createRegExpForIgnorePatterns(normalizedOptions);
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Checks whether a comment is an inline comment.
+         *
+         * For the purpose of this rule, a comment is inline if:
+         * 1. The comment is preceded by a token on the same line; and
+         * 2. The command is followed by a token on the same line.
+         *
+         * Note that the comment itself need not be single-line!
+         *
+         * Also, it follows from this definition that only block comments can
+         * be considered as possibly inline. This is because line comments
+         * would consume any following tokens on the same line as the comment.
+         *
+         * @param {ASTNode} comment The comment node to check.
+         * @returns {boolean} True if the comment is an inline comment, false
+         * otherwise.
+         */
+        function isInlineComment(comment) {
+            const previousToken = sourceCode.getTokenBefore(comment, { includeComments: true }),
+                nextToken = sourceCode.getTokenAfter(comment, { includeComments: true });
+
+            return Boolean(
+                previousToken &&
+                nextToken &&
+                comment.loc.start.line === previousToken.loc.end.line &&
+                comment.loc.end.line === nextToken.loc.start.line
+            );
+        }
+
+        /**
+         * Determine if a comment follows another comment.
+         *
+         * @param {ASTNode} comment The comment to check.
+         * @returns {boolean} True if the comment follows a valid comment.
+         */
+        function isConsecutiveComment(comment) {
+            const previousTokenOrComment = sourceCode.getTokenBefore(comment, { includeComments: true });
+
+            return Boolean(
+                previousTokenOrComment &&
+                ["Block", "Line"].indexOf(previousTokenOrComment.type) !== -1
+            );
+        }
+
+        /**
+         * Check a comment to determine if it is valid for this rule.
+         *
+         * @param {ASTNode} comment The comment node to process.
+         * @param {Object} options The options for checking this comment.
+         * @returns {boolean} True if the comment is valid, false otherwise.
+         */
+        function isCommentValid(comment, options) {
+
+            // 1. Check for default ignore pattern.
+            if (DEFAULT_IGNORE_PATTERN.test(comment.value)) {
+                return true;
+            }
+
+            // 2. Check for custom ignore pattern.
+            const commentWithoutAsterisks = comment.value
+                .replace(/\*/g, "");
+
+            if (options.ignorePatternRegExp && options.ignorePatternRegExp.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 3. Check for inline comments.
+            if (options.ignoreInlineComments && isInlineComment(comment)) {
+                return true;
+            }
+
+            // 4. Is this a consecutive comment (and are we tolerating those)?
+            if (options.ignoreConsecutiveComments && isConsecutiveComment(comment)) {
+                return true;
+            }
+
+            // 5. Does the comment start with a possible URL?
+            if (MAYBE_URL.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 6. Is the initial word character a letter?
+            const commentWordCharsOnly = commentWithoutAsterisks
+                .replace(WHITESPACE, "");
+
+            if (commentWordCharsOnly.length === 0) {
+                return true;
+            }
+
+            const firstWordChar = commentWordCharsOnly[0];
+
+            if (!LETTER_PATTERN.test(firstWordChar)) {
+                return true;
+            }
+
+            // 7. Check the case of the initial word character.
+            const isUppercase = firstWordChar !== firstWordChar.toLocaleLowerCase(),
+                isLowercase = firstWordChar !== firstWordChar.toLocaleUpperCase();
+
+            if (capitalize === "always" && isLowercase) {
+                return false;
+            } else if (capitalize === "never" && isUppercase) {
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Process a comment to determine if it needs to be reported.
+         *
+         * @param {ASTNode} comment The comment node to process.
+         * @returns {void}
+         */
+        function processComment(comment) {
+            const options = normalizedOptions[comment.type],
+                commentValid = isCommentValid(comment, options);
+
+            if (!commentValid) {
+                const message = capitalize === "always"
+                    ? ALWAYS_MESSAGE
+                    : NEVER_MESSAGE;
+
+                context.report({
+                    node: null,         // Intentionally using loc instead
+                    loc: comment.loc,
+                    message,
+                    fix(fixer) {
+                        const match = comment.value.match(LETTER_PATTERN);
+
+                        return fixer.replaceTextRange(
+
+                            // Offset match.index by 2 to account for the first 2 characters that start the comment (// or /*)
+                            [comment.range[0] + match.index + 2, comment.range[0] + match.index + 3],
+                            capitalize === "always" ? match[0].toLocaleUpperCase() : match[0].toLocaleLowerCase()
+                        );
+                    }
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.forEach(processComment);
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/class-methods-use-this.js

@@ -0,0 +1,110 @@
+/**
+ * @fileoverview Rule to enforce that all class methods use 'this'.
+ * @author Patrick Williams
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce that class methods utilize `this`",
+            category: "Best Practices",
+            recommended: false
+        },
+        schema: [{
+            type: "object",
+            properties: {
+                exceptMethods: {
+                    type: "array",
+                    items: {
+                        type: "string"
+                    }
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+    create(context) {
+        const config = context.options[0] ? Object.assign({}, context.options[0]) : {};
+        const exceptMethods = new Set(config.exceptMethods || []);
+
+        const stack = [];
+
+        /**
+         * Initializes the current context to false and pushes it onto the stack.
+         * These booleans represent whether 'this' has been used in the context.
+         * @returns {void}
+         * @private
+         */
+        function enterFunction() {
+            stack.push(false);
+        }
+
+        /**
+         * Check if the node is an instance method
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} True if its an instance method
+         * @private
+         */
+        function isInstanceMethod(node) {
+            return !node.static && node.kind !== "constructor" && node.type === "MethodDefinition";
+        }
+
+        /**
+         * Check if the node is an instance method not excluded by config
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} True if it is an instance method, and not excluded by config
+         * @private
+         */
+        function isIncludedInstanceMethod(node) {
+            return isInstanceMethod(node) && !exceptMethods.has(node.key.name);
+        }
+
+        /**
+         * Checks if we are leaving a function that is a method, and reports if 'this' has not been used.
+         * Static methods and the constructor are exempt.
+         * Then pops the context off the stack.
+         * @param {ASTNode} node - A function node that was entered.
+         * @returns {void}
+         * @private
+         */
+        function exitFunction(node) {
+            const methodUsesThis = stack.pop();
+
+            if (isIncludedInstanceMethod(node.parent) && !methodUsesThis) {
+                context.report({
+                    node,
+                    message: "Expected 'this' to be used by class method '{{classMethod}}'.",
+                    data: {
+                        classMethod: node.parent.key.name
+                    }
+                });
+            }
+        }
+
+        /**
+         * Mark the current context as having used 'this'.
+         * @returns {void}
+         * @private
+         */
+        function markThisUsed() {
+            if (stack.length) {
+                stack[stack.length - 1] = true;
+            }
+        }
+
+        return {
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+            ThisExpression: markThisUsed,
+            Super: markThisUsed
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/comma-dangle.js

@@ -0,0 +1,337 @@
+/**
+ * @fileoverview Rule to forbid or enforce dangling commas.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_OPTIONS = Object.freeze({
+    arrays: "never",
+    objects: "never",
+    imports: "never",
+    exports: "never",
+    functions: "ignore"
+});
+
+/**
+ * Checks whether or not a trailing comma is allowed in a given node.
+ * If the `lastItem` is `RestElement` or `RestProperty`, it disallows trailing commas.
+ *
+ * @param {ASTNode} lastItem - The node of the last element in the given node.
+ * @returns {boolean} `true` if a trailing comma is allowed.
+ */
+function isTrailingCommaAllowed(lastItem) {
+    return !(
+        lastItem.type === "RestElement" ||
+        lastItem.type === "RestProperty" ||
+        lastItem.type === "ExperimentalRestProperty"
+    );
+}
+
+/**
+ * Normalize option value.
+ *
+ * @param {string|Object|undefined} optionValue - The 1st option value to normalize.
+ * @returns {Object} The normalized option value.
+ */
+function normalizeOptions(optionValue) {
+    if (typeof optionValue === "string") {
+        return {
+            arrays: optionValue,
+            objects: optionValue,
+            imports: optionValue,
+            exports: optionValue,
+
+            // For backward compatibility, always ignore functions.
+            functions: "ignore"
+        };
+    }
+    if (typeof optionValue === "object" && optionValue !== null) {
+        return {
+            arrays: optionValue.arrays || DEFAULT_OPTIONS.arrays,
+            objects: optionValue.objects || DEFAULT_OPTIONS.objects,
+            imports: optionValue.imports || DEFAULT_OPTIONS.imports,
+            exports: optionValue.exports || DEFAULT_OPTIONS.exports,
+            functions: optionValue.functions || DEFAULT_OPTIONS.functions
+        };
+    }
+
+    return DEFAULT_OPTIONS;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow trailing commas",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                defs: {
+                    value: {
+                        enum: [
+                            "always",
+                            "always-multiline",
+                            "only-multiline",
+                            "never"
+                        ]
+                    },
+                    valueWithIgnore: {
+                        anyOf: [
+                            {
+                                $ref: "#/defs/value"
+                            },
+                            {
+                                enum: ["ignore"]
+                            }
+                        ]
+                    }
+                },
+                anyOf: [
+                    {
+                        $ref: "#/defs/value"
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            arrays: { $refs: "#/defs/valueWithIgnore" },
+                            objects: { $refs: "#/defs/valueWithIgnore" },
+                            imports: { $refs: "#/defs/valueWithIgnore" },
+                            exports: { $refs: "#/defs/valueWithIgnore" },
+                            functions: { $refs: "#/defs/valueWithIgnore" }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const options = normalizeOptions(context.options[0]);
+        const sourceCode = context.getSourceCode();
+        const UNEXPECTED_MESSAGE = "Unexpected trailing comma.";
+        const MISSING_MESSAGE = "Missing trailing comma.";
+
+        /**
+         * Gets the last item of the given node.
+         * @param {ASTNode} node - The node to get.
+         * @returns {ASTNode|null} The last node or null.
+         */
+        function getLastItem(node) {
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ObjectPattern":
+                    return lodash.last(node.properties);
+                case "ArrayExpression":
+                case "ArrayPattern":
+                    return lodash.last(node.elements);
+                case "ImportDeclaration":
+                case "ExportNamedDeclaration":
+                    return lodash.last(node.specifiers);
+                case "FunctionDeclaration":
+                case "FunctionExpression":
+                case "ArrowFunctionExpression":
+                    return lodash.last(node.params);
+                case "CallExpression":
+                case "NewExpression":
+                    return lodash.last(node.arguments);
+                default:
+                    return null;
+            }
+        }
+
+        /**
+         * Gets the trailing comma token of the given node.
+         * If the trailing comma does not exist, this returns the token which is
+         * the insertion point of the trailing comma token.
+         *
+         * @param {ASTNode} node - The node to get.
+         * @param {ASTNode} lastItem - The last item of the node.
+         * @returns {Token} The trailing comma token or the insertion point.
+         */
+        function getTrailingToken(node, lastItem) {
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ArrayExpression":
+                case "CallExpression":
+                case "NewExpression":
+                    return sourceCode.getLastToken(node, 1);
+                default: {
+                    const nextToken = sourceCode.getTokenAfter(lastItem);
+
+                    if (astUtils.isCommaToken(nextToken)) {
+                        return nextToken;
+                    }
+                    return sourceCode.getLastToken(lastItem);
+                }
+            }
+        }
+
+        /**
+         * Checks whether or not a given node is multiline.
+         * This rule handles a given node as multiline when the closing parenthesis
+         * and the last element are not on the same line.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} `true` if the node is multiline.
+         */
+        function isMultiline(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem) {
+                return false;
+            }
+
+            const penultimateToken = getTrailingToken(node, lastItem);
+            const lastToken = sourceCode.getTokenAfter(penultimateToken);
+
+            return lastToken.loc.end.line !== penultimateToken.loc.end.line;
+        }
+
+        /**
+         * Reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forbidTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (astUtils.isCommaToken(trailingToken)) {
+                context.report({
+                    node: lastItem,
+                    loc: trailingToken.loc.start,
+                    message: UNEXPECTED_MESSAGE,
+                    fix(fixer) {
+                        return fixer.remove(trailingToken);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports the last element of a given node if it does not have a trailing
+         * comma.
+         *
+         * If a given node is `ArrayPattern` which has `RestElement`, the trailing
+         * comma is disallowed, so report if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+            if (!isTrailingCommaAllowed(lastItem)) {
+                forbidTrailingComma(node);
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (trailingToken.value !== ",") {
+                context.report({
+                    node: lastItem,
+                    loc: trailingToken.loc.end,
+                    message: MISSING_MESSAGE,
+                    fix(fixer) {
+                        return fixer.insertTextAfter(trailingToken, ",");
+                    }
+                });
+            }
+        }
+
+        /**
+         * If a given node is multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingCommaIfMultiline(node) {
+            if (isMultiline(node)) {
+                forceTrailingComma(node);
+            } else {
+                forbidTrailingComma(node);
+            }
+        }
+
+        /**
+         * Only if a given node is not multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function allowTrailingCommaIfMultiline(node) {
+            if (!isMultiline(node)) {
+                forbidTrailingComma(node);
+            }
+        }
+
+        const predicate = {
+            always: forceTrailingComma,
+            "always-multiline": forceTrailingCommaIfMultiline,
+            "only-multiline": allowTrailingCommaIfMultiline,
+            never: forbidTrailingComma,
+            ignore: lodash.noop
+        };
+
+        return {
+            ObjectExpression: predicate[options.objects],
+            ObjectPattern: predicate[options.objects],
+
+            ArrayExpression: predicate[options.arrays],
+            ArrayPattern: predicate[options.arrays],
+
+            ImportDeclaration: predicate[options.imports],
+
+            ExportNamedDeclaration: predicate[options.exports],
+
+            FunctionDeclaration: predicate[options.functions],
+            FunctionExpression: predicate[options.functions],
+            ArrowFunctionExpression: predicate[options.functions],
+            CallExpression: predicate[options.functions],
+            NewExpression: predicate[options.functions]
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/comma-spacing.js

@@ -0,0 +1,183 @@
+/**
+ * @fileoverview Comma spacing - validates spacing before and after comma
+ * @author Vignesh Anand aka vegetableman.
+ */
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing before and after commas",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean"
+                    },
+                    after: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const sourceCode = context.getSourceCode();
+        const tokensAndComments = sourceCode.tokensAndComments;
+
+        const options = {
+            before: context.options[0] ? !!context.options[0].before : false,
+            after: context.options[0] ? !!context.options[0].after : true
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // list of comma tokens to ignore for the check of leading whitespace
+        const commaTokensToIgnore = [];
+
+        /**
+         * Reports a spacing error with an appropriate message.
+         * @param {ASTNode} node The binary expression node to report.
+         * @param {string} dir Is the error "before" or "after" the comma?
+         * @param {ASTNode} otherNode The node at the left or right of `node`
+         * @returns {void}
+         * @private
+         */
+        function report(node, dir, otherNode) {
+            context.report({
+                node,
+                fix(fixer) {
+                    if (options[dir]) {
+                        if (dir === "before") {
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.insertTextAfter(node, " ");
+
+                    }
+                    let start, end;
+                    const newText = "";
+
+                    if (dir === "before") {
+                        start = otherNode.range[1];
+                        end = node.range[0];
+                    } else {
+                        start = node.range[1];
+                        end = otherNode.range[0];
+                    }
+
+                    return fixer.replaceTextRange([start, end], newText);
+
+                },
+                message: options[dir]
+                  ? "A space is required {{dir}} ','."
+                  : "There should be no space {{dir}} ','.",
+                data: {
+                    dir
+                }
+            });
+        }
+
+        /**
+         * Validates the spacing around a comma token.
+         * @param {Object} tokens - The tokens to be validated.
+         * @param {Token} tokens.comma The token representing the comma.
+         * @param {Token} [tokens.left] The last token before the comma.
+         * @param {Token} [tokens.right] The first token after the comma.
+         * @param {Token|ASTNode} reportItem The item to use when reporting an error.
+         * @returns {void}
+         * @private
+         */
+        function validateCommaItemSpacing(tokens, reportItem) {
+            if (tokens.left && astUtils.isTokenOnSameLine(tokens.left, tokens.comma) &&
+                    (options.before !== sourceCode.isSpaceBetweenTokens(tokens.left, tokens.comma))
+            ) {
+                report(reportItem, "before", tokens.left);
+            }
+
+            if (tokens.right && !options.after && tokens.right.type === "Line") {
+                return;
+            }
+
+            if (tokens.right && astUtils.isTokenOnSameLine(tokens.comma, tokens.right) &&
+                    (options.after !== sourceCode.isSpaceBetweenTokens(tokens.comma, tokens.right))
+            ) {
+                report(reportItem, "after", tokens.right);
+            }
+        }
+
+        /**
+         * Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
+         * @param {ASTNode} node An ArrayExpression or ArrayPattern node.
+         * @returns {void}
+         */
+        function addNullElementsToIgnoreList(node) {
+            let previousToken = sourceCode.getFirstToken(node);
+
+            node.elements.forEach(element => {
+                let token;
+
+                if (element === null) {
+                    token = sourceCode.getTokenAfter(previousToken);
+
+                    if (astUtils.isCommaToken(token)) {
+                        commaTokensToIgnore.push(token);
+                    }
+                } else {
+                    token = sourceCode.getTokenAfter(element);
+                }
+
+                previousToken = token;
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            "Program:exit"() {
+                tokensAndComments.forEach((token, i) => {
+
+                    if (!astUtils.isCommaToken(token)) {
+                        return;
+                    }
+
+                    if (token && token.type === "JSXText") {
+                        return;
+                    }
+
+                    const previousToken = tokensAndComments[i - 1];
+                    const nextToken = tokensAndComments[i + 1];
+
+                    validateCommaItemSpacing({
+                        comma: token,
+                        left: astUtils.isCommaToken(previousToken) || commaTokensToIgnore.indexOf(token) > -1 ? null : previousToken,
+                        right: astUtils.isCommaToken(nextToken) ? null : nextToken
+                    }, token);
+                });
+            },
+            ArrayExpression: addNullElementsToIgnoreList,
+            ArrayPattern: addNullElementsToIgnoreList
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/comma-style.js

@@ -0,0 +1,297 @@
+/**
+ * @fileoverview Comma style - enforces comma styles of two types: last and first
+ * @author Vignesh Anand aka vegetableman
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent comma style",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "code",
+        schema: [
+            {
+                enum: ["first", "last"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "boolean"
+                        }
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const style = context.options[0] || "last",
+            sourceCode = context.getSourceCode();
+        const exceptions = {
+            ArrayPattern: true,
+            ArrowFunctionExpression: true,
+            CallExpression: true,
+            FunctionDeclaration: true,
+            FunctionExpression: true,
+            ImportDeclaration: true,
+            ObjectPattern: true
+        };
+
+        if (context.options.length === 2 && context.options[1].hasOwnProperty("exceptions")) {
+            const keys = Object.keys(context.options[1].exceptions);
+
+            for (let i = 0; i < keys.length; i++) {
+                exceptions[keys[i]] = context.options[1].exceptions[keys[i]];
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Modified text based on the style
+         * @param {string} styleType Style type
+         * @param {string} text Source code text
+         * @returns {string} modified text
+         * @private
+         */
+        function getReplacedText(styleType, text) {
+            switch (styleType) {
+                case "between":
+                    return `,${text.replace("\n", "")}`;
+
+                case "first":
+                    return `${text},`;
+
+                case "last":
+                    return `,${text}`;
+
+                default:
+                    return "";
+            }
+        }
+
+        /**
+         * Determines the fixer function for a given style.
+         * @param {string} styleType comma style
+         * @param {ASTNode} previousItemToken The token to check.
+         * @param {ASTNode} commaToken The token to check.
+         * @param {ASTNode} currentItemToken The token to check.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function getFixerFunction(styleType, previousItemToken, commaToken, currentItemToken) {
+            const text =
+                sourceCode.text.slice(previousItemToken.range[1], commaToken.range[0]) +
+                sourceCode.text.slice(commaToken.range[1], currentItemToken.range[0]);
+            const range = [previousItemToken.range[1], currentItemToken.range[0]];
+
+            return function(fixer) {
+                return fixer.replaceTextRange(range, getReplacedText(styleType, text));
+            };
+        }
+
+        /**
+         * Validates the spacing around single items in lists.
+         * @param {Token} previousItemToken The last token from the previous item.
+         * @param {Token} commaToken The token representing the comma.
+         * @param {Token} currentItemToken The first token of the current item.
+         * @param {Token} reportItem The item to use when reporting an error.
+         * @returns {void}
+         * @private
+         */
+        function validateCommaItemSpacing(previousItemToken, commaToken, currentItemToken, reportItem) {
+
+            // if single line
+            if (astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                // do nothing.
+
+            } else if (!astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    !astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                // lone comma
+                context.report({
+                    node: reportItem,
+                    loc: {
+                        line: commaToken.loc.end.line,
+                        column: commaToken.loc.start.column
+                    },
+                    message: "Bad line breaking before and after ','.",
+                    fix: getFixerFunction("between", previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "first" && !astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    message: "',' should be placed first.",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "last" && astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    loc: {
+                        line: commaToken.loc.end.line,
+                        column: commaToken.loc.end.column
+                    },
+                    message: "',' should be placed last.",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+            }
+        }
+
+        /**
+         * Checks the comma placement with regards to a declaration/property/element
+         * @param {ASTNode} node The binary expression node to check
+         * @param {string} property The property of the node containing child nodes.
+         * @private
+         * @returns {void}
+         */
+        function validateComma(node, property) {
+            const items = node[property],
+                arrayLiteral = (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+
+            if (items.length > 1 || arrayLiteral) {
+
+                // seed as opening [
+                let previousItemToken = sourceCode.getFirstToken(node);
+
+                items.forEach(item => {
+                    const commaToken = item ? sourceCode.getTokenBefore(item) : previousItemToken,
+                        currentItemToken = item ? sourceCode.getFirstToken(item) : sourceCode.getTokenAfter(commaToken),
+                        reportItem = item || currentItemToken,
+                        tokenBeforeComma = sourceCode.getTokenBefore(commaToken);
+
+                    // Check if previous token is wrapped in parentheses
+                    if (tokenBeforeComma && astUtils.isClosingParenToken(tokenBeforeComma)) {
+                        previousItemToken = tokenBeforeComma;
+                    }
+
+                    /*
+                     * This works by comparing three token locations:
+                     * - previousItemToken is the last token of the previous item
+                     * - commaToken is the location of the comma before the current item
+                     * - currentItemToken is the first token of the current item
+                     *
+                     * These values get switched around if item is undefined.
+                     * previousItemToken will refer to the last token not belonging
+                     * to the current item, which could be a comma or an opening
+                     * square bracket. currentItemToken could be a comma.
+                     *
+                     * All comparisons are done based on these tokens directly, so
+                     * they are always valid regardless of an undefined item.
+                     */
+                    if (astUtils.isCommaToken(commaToken)) {
+                        validateCommaItemSpacing(previousItemToken, commaToken,
+                                currentItemToken, reportItem);
+                    }
+
+                    if (item) {
+                        const tokenAfterItem = sourceCode.getTokenAfter(item, astUtils.isNotClosingParenToken);
+
+                        previousItemToken = tokenAfterItem ? sourceCode.getTokenBefore(tokenAfterItem) : sourceCode.ast.tokens[sourceCode.ast.tokens.length - 1];
+                    }
+                });
+
+                /*
+                 * Special case for array literals that have empty last items, such
+                 * as [ 1, 2, ]. These arrays only have two items show up in the
+                 * AST, so we need to look at the token to verify that there's no
+                 * dangling comma.
+                 */
+                if (arrayLiteral) {
+
+                    const lastToken = sourceCode.getLastToken(node),
+                        nextToLastToken = sourceCode.getTokenBefore(lastToken);
+
+                    if (astUtils.isCommaToken(nextToLastToken)) {
+                        validateCommaItemSpacing(
+                            sourceCode.getTokenBefore(nextToLastToken),
+                            nextToLastToken,
+                            lastToken,
+                            lastToken
+                        );
+                    }
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        const nodes = {};
+
+        if (!exceptions.VariableDeclaration) {
+            nodes.VariableDeclaration = function(node) {
+                validateComma(node, "declarations");
+            };
+        }
+        if (!exceptions.ObjectExpression) {
+            nodes.ObjectExpression = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ObjectPattern) {
+            nodes.ObjectPattern = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ArrayExpression) {
+            nodes.ArrayExpression = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.ArrayPattern) {
+            nodes.ArrayPattern = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.FunctionDeclaration) {
+            nodes.FunctionDeclaration = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.FunctionExpression) {
+            nodes.FunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.ArrowFunctionExpression) {
+            nodes.ArrowFunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.CallExpression) {
+            nodes.CallExpression = function(node) {
+                validateComma(node, "arguments");
+            };
+        }
+        if (!exceptions.ImportDeclaration) {
+            nodes.ImportDeclaration = function(node) {
+                validateComma(node, "specifiers");
+            };
+        }
+
+        return nodes;
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/complexity.js

@@ -0,0 +1,168 @@
+/**
+ * @fileoverview Counts the cyclomatic complexity of each function of the script. See http://en.wikipedia.org/wiki/Cyclomatic_complexity.
+ * Counts the number of if, conditional, for, whilte, try, switch/case,
+ * @author Patrick Brosset
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum cyclomatic complexity allowed in a program",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const option = context.options[0];
+        let THRESHOLD = 20;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            THRESHOLD = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            THRESHOLD = option.max;
+        }
+        if (typeof option === "number") {
+            THRESHOLD = option;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // Using a stack to store complexity (handling nested functions)
+        const fns = [];
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            fns.push(1);
+        }
+
+        /**
+         * Evaluate the node at the end of function
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function endFunction(node) {
+            const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
+            const complexity = fns.pop();
+
+            if (complexity > THRESHOLD) {
+                context.report({
+                    node,
+                    message: "{{name}} has a complexity of {{complexity}}.",
+                    data: { name, complexity }
+                });
+            }
+        }
+
+        /**
+         * Increase the complexity of the function in context
+         * @returns {void}
+         * @private
+         */
+        function increaseComplexity() {
+            if (fns.length) {
+                fns[fns.length - 1]++;
+            }
+        }
+
+        /**
+         * Increase the switch complexity in context
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function increaseSwitchComplexity(node) {
+
+            // Avoiding `default`
+            if (node.test) {
+                increaseComplexity(node);
+            }
+        }
+
+        /**
+         * Increase the logical path complexity in context
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function increaseLogicalComplexity(node) {
+
+            // Avoiding &&
+            if (node.operator === "||") {
+                increaseComplexity(node);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+
+            CatchClause: increaseComplexity,
+            ConditionalExpression: increaseComplexity,
+            LogicalExpression: increaseLogicalComplexity,
+            ForStatement: increaseComplexity,
+            ForInStatement: increaseComplexity,
+            ForOfStatement: increaseComplexity,
+            IfStatement: increaseComplexity,
+            SwitchCase: increaseSwitchComplexity,
+            WhileStatement: increaseComplexity,
+            DoWhileStatement: increaseComplexity
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/computed-property-spacing.js

@@ -0,0 +1,176 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside computed properties.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing inside computed property brackets",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const propertyNameMustBeSpaced = context.options[0] === "always"; // default is "never"
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+        * Reports that there shouldn't be a space after the first token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @param {Token} tokenAfter - The token after `token`.
+        * @returns {void}
+        */
+        function reportNoBeginningSpace(node, token, tokenAfter) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "There should be no space after '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([token.range[1], tokenAfter.range[0]]);
+                }
+            });
+        }
+
+        /**
+        * Reports that there shouldn't be a space before the last token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @param {Token} tokenBefore - The token before `token`.
+        * @returns {void}
+        */
+        function reportNoEndingSpace(node, token, tokenBefore) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "There should be no space before '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([tokenBefore.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+        * Reports that there should be a space after the first token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "A space is required after '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+        * Reports that there should be a space before the last token
+        * @param {ASTNode} node - The node to report in the event of an error.
+        * @param {Token} token - The token to use for the report.
+        * @returns {void}
+        */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                message: "A space is required before '{{tokenValue}}'.",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Returns a function that checks the spacing of a node on the property name
+         * that was passed in.
+         * @param {string} propertyName The property on the node to check for spacing
+         * @returns {Function} A function that will check spacing on a node
+         */
+        function checkSpacing(propertyName) {
+            return function(node) {
+                if (!node.computed) {
+                    return;
+                }
+
+                const property = node[propertyName];
+
+                const before = sourceCode.getTokenBefore(property),
+                    first = sourceCode.getFirstToken(property),
+                    last = sourceCode.getLastToken(property),
+                    after = sourceCode.getTokenAfter(property);
+
+                if (astUtils.isTokenOnSameLine(before, first)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(before, first) && astUtils.isTokenOnSameLine(before, first)) {
+                            reportRequiredBeginningSpace(node, before);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(before, first)) {
+                            reportNoBeginningSpace(node, before, first);
+                        }
+                    }
+                }
+
+                if (astUtils.isTokenOnSameLine(last, after)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(last, after) && astUtils.isTokenOnSameLine(last, after)) {
+                            reportRequiredEndingSpace(node, after);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(last, after)) {
+                            reportNoEndingSpace(node, after, last);
+                        }
+                    }
+                }
+            };
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Property: checkSpacing("key"),
+            MemberExpression: checkSpacing("property")
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/consistent-return.js

@@ -0,0 +1,188 @@
+/**
+ * @fileoverview Rule to flag consistent return values
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is an `Identifier` node which was named a given name.
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - An expected name of the node.
+ * @returns {boolean} `true` if the node is an `Identifier` node which was named as expected.
+ */
+function isIdentifier(node, name) {
+    return node.type === "Identifier" && node.name === name;
+}
+
+/**
+ * Checks whether or not a given code path segment is unreachable.
+ * @param {CodePathSegment} segment - A CodePathSegment to check.
+ * @returns {boolean} `true` if the segment is unreachable.
+ */
+function isUnreachable(segment) {
+    return !segment.reachable;
+}
+
+/**
+* Checks whether a given node is a `constructor` method in an ES6 class
+* @param {ASTNode} node A node to check
+* @returns {boolean} `true` if the node is a `constructor` method
+*/
+function isClassConstructor(node) {
+    return node.type === "FunctionExpression" &&
+        node.parent &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `return` statements to either always or never specify values",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                treatUndefinedAsUnspecified: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const treatUndefinedAsUnspecified = options.treatUndefinedAsUnspecified === true;
+        let funcInfo = null;
+
+        /**
+         * Checks whether of not the implicit returning is consistent if the last
+         * code path segment is reachable.
+         *
+         * @param {ASTNode} node - A program/function node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            let loc, name;
+
+            /*
+             * Skip if it expected no return value or unreachable.
+             * When unreachable, all paths are returned or thrown.
+             */
+            if (!funcInfo.hasReturnValue ||
+                funcInfo.codePath.currentSegments.every(isUnreachable) ||
+                astUtils.isES5Constructor(node) ||
+                isClassConstructor(node)
+            ) {
+                return;
+            }
+
+            // Adjust a location and a message.
+            if (node.type === "Program") {
+
+                // The head of program.
+                loc = { line: 1, column: 0 };
+                name = "program";
+            } else if (node.type === "ArrowFunctionExpression") {
+
+                // `=>` token
+                loc = context.getSourceCode().getTokenBefore(node.body, astUtils.isArrowToken).loc.start;
+            } else if (
+                node.parent.type === "MethodDefinition" ||
+                (node.parent.type === "Property" && node.parent.method)
+            ) {
+
+                // Method name.
+                loc = node.parent.key.loc.start;
+            } else {
+
+                // Function name or `function` keyword.
+                loc = (node.id || node).loc.start;
+            }
+
+            if (!name) {
+                name = astUtils.getFunctionNameWithKind(node);
+            }
+
+            // Reports.
+            context.report({
+                node,
+                loc,
+                message: "Expected to return a value at the end of {{name}}.",
+                data: { name }
+            });
+        }
+
+        return {
+
+            // Initializes/Disposes state of each code path.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    hasReturnValue: false,
+                    message: "",
+                    node
+                };
+            },
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            // Reports a given return statement if it's inconsistent.
+            ReturnStatement(node) {
+                const argument = node.argument;
+                let hasReturnValue = Boolean(argument);
+
+                if (treatUndefinedAsUnspecified && hasReturnValue) {
+                    hasReturnValue = !isIdentifier(argument, "undefined") && argument.operator !== "void";
+                }
+
+                if (!funcInfo.hasReturn) {
+                    funcInfo.hasReturn = true;
+                    funcInfo.hasReturnValue = hasReturnValue;
+                    funcInfo.message = "{{name}} expected {{which}} return value.";
+                    funcInfo.data = {
+                        name: funcInfo.node.type === "Program"
+                            ? "Program"
+                            : lodash.upperFirst(astUtils.getFunctionNameWithKind(funcInfo.node)),
+                        which: hasReturnValue ? "a" : "no"
+                    };
+                } else if (funcInfo.hasReturnValue !== hasReturnValue) {
+                    context.report({
+                        node,
+                        message: funcInfo.message,
+                        data: funcInfo.data
+                    });
+                }
+            },
+
+            // Reports a given program/function if the implicit returning is not consistent.
+            "Program:exit": checkLastSegment,
+            "FunctionDeclaration:exit": checkLastSegment,
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/consistent-this.js

@@ -0,0 +1,141 @@
+/**
+ * @fileoverview Rule to enforce consistent naming of "this" context variables
+ * @author Raphael Pigulla
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent naming when capturing the current execution context",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string",
+                minLength: 1
+            },
+            uniqueItems: true
+        }
+    },
+
+    create(context) {
+        let aliases = [];
+
+        if (context.options.length === 0) {
+            aliases.push("that");
+        } else {
+            aliases = context.options;
+        }
+
+        /**
+         * Reports that a variable declarator or assignment expression is assigning
+         * a non-'this' value to the specified alias.
+         * @param {ASTNode} node - The assigning node.
+         * @param {string} alias - the name of the alias that was incorrectly used.
+         * @returns {void}
+         */
+        function reportBadAssignment(node, alias) {
+            context.report({ node, message: "Designated alias '{{alias}}' is not assigned to 'this'.", data: { alias } });
+        }
+
+        /**
+         * Checks that an assignment to an identifier only assigns 'this' to the
+         * appropriate alias, and the alias is only assigned to 'this'.
+         * @param {ASTNode} node - The assigning node.
+         * @param {Identifier} name - The name of the variable assigned to.
+         * @param {Expression} value - The value of the assignment.
+         * @returns {void}
+         */
+        function checkAssignment(node, name, value) {
+            const isThis = value.type === "ThisExpression";
+
+            if (aliases.indexOf(name) !== -1) {
+                if (!isThis || node.operator && node.operator !== "=") {
+                    reportBadAssignment(node, name);
+                }
+            } else if (isThis) {
+                context.report({ node, message: "Unexpected alias '{{name}}' for 'this'.", data: { name } });
+            }
+        }
+
+        /**
+         * Ensures that a variable declaration of the alias in a program or function
+         * is assigned to the correct value.
+         * @param {string} alias alias the check the assignment of.
+         * @param {Object} scope scope of the current code we are checking.
+         * @private
+         * @returns {void}
+         */
+        function checkWasAssigned(alias, scope) {
+            const variable = scope.set.get(alias);
+
+            if (!variable) {
+                return;
+            }
+
+            if (variable.defs.some(def => def.node.type === "VariableDeclarator" &&
+                def.node.init !== null)) {
+                return;
+            }
+
+            // The alias has been declared and not assigned: check it was
+            // assigned later in the same scope.
+            if (!variable.references.some(reference => {
+                const write = reference.writeExpr;
+
+                return (
+                    reference.from === scope &&
+                    write && write.type === "ThisExpression" &&
+                    write.parent.operator === "="
+                );
+            })) {
+                variable.defs.map(def => def.node).forEach(node => {
+                    reportBadAssignment(node, alias);
+                });
+            }
+        }
+
+        /**
+         * Check each alias to ensure that is was assinged to the correct value.
+         * @returns {void}
+         */
+        function ensureWasAssigned() {
+            const scope = context.getScope();
+
+            aliases.forEach(alias => {
+                checkWasAssigned(alias, scope);
+            });
+        }
+
+        return {
+            "Program:exit": ensureWasAssigned,
+            "FunctionExpression:exit": ensureWasAssigned,
+            "FunctionDeclaration:exit": ensureWasAssigned,
+
+            VariableDeclarator(node) {
+                const id = node.id;
+                const isDestructuring =
+                    id.type === "ArrayPattern" || id.type === "ObjectPattern";
+
+                if (node.init !== null && !isDestructuring) {
+                    checkAssignment(node, id.name, node.init);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (node.left.type === "Identifier") {
+                    checkAssignment(node, node.left.name, node.right);
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/constructor-super.js

@@ -0,0 +1,385 @@
+/**
+ * @fileoverview A rule to verify `super()` callings in constructor.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether a given code path segment is reachable or not.
+ *
+ * @param {CodePathSegment} segment - A code path segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Checks whether or not a given node is a constructor.
+ * @param {ASTNode} node - A node to check. This node type is one of
+ *   `Program`, `FunctionDeclaration`, `FunctionExpression`, and
+ *   `ArrowFunctionExpression`.
+ * @returns {boolean} `true` if the node is a constructor.
+ */
+function isConstructorFunction(node) {
+    return (
+        node.type === "FunctionExpression" &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor"
+    );
+}
+
+/**
+ * Checks whether a given node can be a constructor or not.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node can be a constructor.
+ */
+function isPossibleConstructor(node) {
+    if (!node) {
+        return false;
+    }
+
+    switch (node.type) {
+        case "ClassExpression":
+        case "FunctionExpression":
+        case "ThisExpression":
+        case "MemberExpression":
+        case "CallExpression":
+        case "NewExpression":
+        case "YieldExpression":
+        case "TaggedTemplateExpression":
+        case "MetaProperty":
+            return true;
+
+        case "Identifier":
+            return node.name !== "undefined";
+
+        case "AssignmentExpression":
+            return isPossibleConstructor(node.right);
+
+        case "LogicalExpression":
+            return (
+                isPossibleConstructor(node.left) ||
+                isPossibleConstructor(node.right)
+            );
+
+        case "ConditionalExpression":
+            return (
+                isPossibleConstructor(node.alternate) ||
+                isPossibleConstructor(node.consequent)
+            );
+
+        case "SequenceExpression": {
+            const lastExpression = node.expressions[node.expressions.length - 1];
+
+            return isPossibleConstructor(lastExpression);
+        }
+
+        default:
+            return false;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `super()` calls in constructors",
+            category: "ECMAScript 6",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /*
+         * {{hasExtends: boolean, scope: Scope, codePath: CodePath}[]}
+         * Information for each constructor.
+         * - upper:      Information of the upper constructor.
+         * - hasExtends: A flag which shows whether own class has a valid `extends`
+         *               part.
+         * - scope:      The scope of own class.
+         * - codePath:   The code path object of the constructor.
+         */
+        let funcInfo = null;
+
+        /*
+         * {Map<string, {calledInSomePaths: boolean, calledInEveryPaths: boolean}>}
+         * Information for each code path segment.
+         * - calledInSomePaths:  A flag of be called `super()` in some code paths.
+         * - calledInEveryPaths: A flag of be called `super()` in all code paths.
+         * - validNodes:
+         */
+        let segInfoMap = Object.create(null);
+
+        /**
+         * Gets the flag which shows `super()` is called in some paths.
+         * @param {CodePathSegment} segment - A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in some paths
+         */
+        function isCalledInSomePath(segment) {
+            return segment.reachable && segInfoMap[segment.id].calledInSomePaths;
+        }
+
+        /**
+         * Gets the flag which shows `super()` is called in all paths.
+         * @param {CodePathSegment} segment - A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in all paths.
+         */
+        function isCalledInEveryPath(segment) {
+
+            /*
+             * If specific segment is the looped segment of the current segment,
+             * skip the segment.
+             * If not skipped, this never becomes true after a loop.
+             */
+            if (segment.nextSegments.length === 1 &&
+                segment.nextSegments[0].isLoopedPrevSegment(segment)
+            ) {
+                return true;
+            }
+            return segment.reachable && segInfoMap[segment.id].calledInEveryPaths;
+        }
+
+        return {
+
+            /**
+             * Stacks a constructor information.
+             * @param {CodePath} codePath - A code path which was started.
+             * @param {ASTNode} node - The current node.
+             * @returns {void}
+             */
+            onCodePathStart(codePath, node) {
+                if (isConstructorFunction(node)) {
+
+                    // Class > ClassBody > MethodDefinition > FunctionExpression
+                    const classNode = node.parent.parent.parent;
+                    const superClass = classNode.superClass;
+
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: true,
+                        hasExtends: Boolean(superClass),
+                        superIsConstructor: isPossibleConstructor(superClass),
+                        codePath
+                    };
+                } else {
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: false,
+                        hasExtends: false,
+                        superIsConstructor: false,
+                        codePath
+                    };
+                }
+            },
+
+            /**
+             * Pops a constructor information.
+             * And reports if `super()` lacked.
+             * @param {CodePath} codePath - A code path which was ended.
+             * @param {ASTNode} node - The current node.
+             * @returns {void}
+             */
+            onCodePathEnd(codePath, node) {
+                const hasExtends = funcInfo.hasExtends;
+
+                // Pop.
+                funcInfo = funcInfo.upper;
+
+                if (!hasExtends) {
+                    return;
+                }
+
+                // Reports if `super()` lacked.
+                const segments = codePath.returnedSegments;
+                const calledInEveryPaths = segments.every(isCalledInEveryPath);
+                const calledInSomePaths = segments.some(isCalledInSomePath);
+
+                if (!calledInEveryPaths) {
+                    context.report({
+                        message: calledInSomePaths
+                            ? "Lacked a call of 'super()' in some code paths."
+                            : "Expected to call 'super()'.",
+                        node: node.parent
+                    });
+                }
+            },
+
+            /**
+             * Initialize information of a given code path segment.
+             * @param {CodePathSegment} segment - A code path segment to initialize.
+             * @returns {void}
+             */
+            onCodePathSegmentStart(segment) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Initialize info.
+                const info = segInfoMap[segment.id] = {
+                    calledInSomePaths: false,
+                    calledInEveryPaths: false,
+                    validNodes: []
+                };
+
+                // When there are previous segments, aggregates these.
+                const prevSegments = segment.prevSegments;
+
+                if (prevSegments.length > 0) {
+                    info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                    info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+                }
+            },
+
+            /**
+             * Update information of the code path segment when a code path was
+             * looped.
+             * @param {CodePathSegment} fromSegment - The code path segment of the
+             *      end of a loop.
+             * @param {CodePathSegment} toSegment - A code path segment of the head
+             *      of a loop.
+             * @returns {void}
+             */
+            onCodePathSegmentLoop(fromSegment, toSegment) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Update information inside of the loop.
+                const isRealLoop = toSegment.prevSegments.length >= 2;
+
+                funcInfo.codePath.traverseSegments(
+                    { first: toSegment, last: fromSegment },
+                    segment => {
+                        const info = segInfoMap[segment.id];
+                        const prevSegments = segment.prevSegments;
+
+                        // Updates flags.
+                        info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                        info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+
+                        // If flags become true anew, reports the valid nodes.
+                        if (info.calledInSomePaths || isRealLoop) {
+                            const nodes = info.validNodes;
+
+                            info.validNodes = [];
+
+                            for (let i = 0; i < nodes.length; ++i) {
+                                const node = nodes[i];
+
+                                context.report({
+                                    message: "Unexpected duplicate 'super()'.",
+                                    node
+                                });
+                            }
+                        }
+                    }
+                );
+            },
+
+            /**
+             * Checks for a call of `super()`.
+             * @param {ASTNode} node - A CallExpression node to check.
+             * @returns {void}
+             */
+            "CallExpression:exit"(node) {
+                if (!(funcInfo && funcInfo.isConstructor)) {
+                    return;
+                }
+
+                // Skips except `super()`.
+                if (node.callee.type !== "Super") {
+                    return;
+                }
+
+                // Reports if needed.
+                if (funcInfo.hasExtends) {
+                    const segments = funcInfo.codePath.currentSegments;
+                    let duplicate = false;
+                    let info = null;
+
+                    for (let i = 0; i < segments.length; ++i) {
+                        const segment = segments[i];
+
+                        if (segment.reachable) {
+                            info = segInfoMap[segment.id];
+
+                            duplicate = duplicate || info.calledInSomePaths;
+                            info.calledInSomePaths = info.calledInEveryPaths = true;
+                        }
+                    }
+
+                    if (info) {
+                        if (duplicate) {
+                            context.report({
+                                message: "Unexpected duplicate 'super()'.",
+                                node
+                            });
+                        } else if (!funcInfo.superIsConstructor) {
+                            context.report({
+                                message: "Unexpected 'super()' because 'super' is not a constructor.",
+                                node
+                            });
+                        } else {
+                            info.validNodes.push(node);
+                        }
+                    }
+                } else if (funcInfo.codePath.currentSegments.some(isReachable)) {
+                    context.report({
+                        message: "Unexpected 'super()'.",
+                        node
+                    });
+                }
+            },
+
+            /**
+             * Set the mark to the returned path as `super()` was called.
+             * @param {ASTNode} node - A ReturnStatement node to check.
+             * @returns {void}
+             */
+            ReturnStatement(node) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Skips if no argument.
+                if (!node.argument) {
+                    return;
+                }
+
+                // Returning argument is a substitute of 'super()'.
+                const segments = funcInfo.codePath.currentSegments;
+
+                for (let i = 0; i < segments.length; ++i) {
+                    const segment = segments[i];
+
+                    if (segment.reachable) {
+                        const info = segInfoMap[segment.id];
+
+                        info.calledInSomePaths = info.calledInEveryPaths = true;
+                    }
+                }
+            },
+
+            /**
+             * Resets state.
+             * @returns {void}
+             */
+            "Program:exit"() {
+                segInfoMap = Object.create(null);
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/curly.js

@@ -0,0 +1,396 @@
+/**
+ * @fileoverview Rule to flag statements without curly braces
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+const esUtils = require("esutils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent brace style for all control statements",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["all"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["multi", "multi-line", "multi-or-nest"]
+                        },
+                        {
+                            enum: ["consistent"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code"
+    },
+
+    create(context) {
+
+        const multiOnly = (context.options[0] === "multi");
+        const multiLine = (context.options[0] === "multi-line");
+        const multiOrNest = (context.options[0] === "multi-or-nest");
+        const consistent = (context.options[1] === "consistent");
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Determines if a given node is a one-liner that's on the same line as it's preceding code.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner that's on the same line as it's preceding code.
+         * @private
+         */
+        function isCollapsedOneLiner(node) {
+            const before = sourceCode.getTokenBefore(node);
+            const last = sourceCode.getLastToken(node);
+            const lastExcludingSemicolon = astUtils.isSemicolonToken(last) ? sourceCode.getTokenBefore(last) : last;
+
+            return before.loc.start.line === lastExcludingSemicolon.loc.end.line;
+        }
+
+        /**
+         * Determines if a given node is a one-liner.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner.
+         * @private
+         */
+        function isOneLiner(node) {
+            const first = sourceCode.getFirstToken(node),
+                last = sourceCode.getLastToken(node);
+
+            return first.loc.start.line === last.loc.end.line;
+        }
+
+        /**
+         * Checks if the given token is an `else` token or not.
+         *
+         * @param {Token} token - The token to check.
+         * @returns {boolean} `true` if the token is an `else` token.
+         */
+        function isElseKeywordToken(token) {
+            return token.value === "else" && token.type === "Keyword";
+        }
+
+        /**
+         * Gets the `else` keyword token of a given `IfStatement` node.
+         * @param {ASTNode} node - A `IfStatement` node to get.
+         * @returns {Token} The `else` keyword token.
+         */
+        function getElseKeyword(node) {
+            return node.alternate && sourceCode.getFirstTokenBetween(node.consequent, node.alternate, isElseKeywordToken);
+        }
+
+        /**
+         * Checks a given IfStatement node requires braces of the consequent chunk.
+         * This returns `true` when below:
+         *
+         * 1. The given node has the `alternate` node.
+         * 2. There is a `IfStatement` which doesn't have `alternate` node in the
+         *    trailing statement chain of the `consequent` node.
+         *
+         * @param {ASTNode} node - A IfStatement node to check.
+         * @returns {boolean} `true` if the node requires braces of the consequent chunk.
+         */
+        function requiresBraceOfConsequent(node) {
+            if (node.alternate && node.consequent.type === "BlockStatement") {
+                if (node.consequent.body.length >= 2) {
+                    return true;
+                }
+
+                node = node.consequent.body[0];
+                while (node) {
+                    if (node.type === "IfStatement" && !node.alternate) {
+                        return true;
+                    }
+                    node = astUtils.getTrailingStatement(node);
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Reports "Expected { after ..." error
+         * @param {ASTNode} node The node to report.
+         * @param {ASTNode} bodyNode The body node that is incorrectly missing curly brackets
+         * @param {string} name The name to report.
+         * @param {string} suffix Additional string to add to the end of a report.
+         * @returns {void}
+         * @private
+         */
+        function reportExpectedBraceError(node, bodyNode, name, suffix) {
+            context.report({
+                node,
+                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                message: "Expected { after '{{name}}'{{suffix}}.",
+                data: {
+                    name,
+                    suffix: (suffix ? ` ${suffix}` : "")
+                },
+                fix: fixer => fixer.replaceText(bodyNode, `{${sourceCode.getText(bodyNode)}}`)
+            });
+        }
+
+        /**
+        * Determines if a semicolon needs to be inserted after removing a set of curly brackets, in order to avoid a SyntaxError.
+        * @param {Token} closingBracket The } token
+        * @returns {boolean} `true` if a semicolon needs to be inserted after the last statement in the block.
+        */
+        function needsSemicolon(closingBracket) {
+            const tokenBefore = sourceCode.getTokenBefore(closingBracket);
+            const tokenAfter = sourceCode.getTokenAfter(closingBracket);
+            const lastBlockNode = sourceCode.getNodeByRangeIndex(tokenBefore.range[0]);
+
+            if (astUtils.isSemicolonToken(tokenBefore)) {
+
+                // If the last statement already has a semicolon, don't add another one.
+                return false;
+            }
+
+            if (!tokenAfter) {
+
+                // If there are no statements after this block, there is no need to add a semicolon.
+                return false;
+            }
+
+            if (lastBlockNode.type === "BlockStatement" && lastBlockNode.parent.type !== "FunctionExpression" && lastBlockNode.parent.type !== "ArrowFunctionExpression") {
+
+                // If the last node surrounded by curly brackets is a BlockStatement (other than a FunctionExpression or an ArrowFunctionExpression),
+                // don't insert a semicolon. Otherwise, the semicolon would be parsed as a separate statement, which would cause
+                // a SyntaxError if it was followed by `else`.
+                return false;
+            }
+
+            if (tokenBefore.loc.end.line === tokenAfter.loc.start.line) {
+
+                // If the next token is on the same line, insert a semicolon.
+                return true;
+            }
+
+            if (/^[([/`+-]/.test(tokenAfter.value)) {
+
+                // If the next token starts with a character that would disrupt ASI, insert a semicolon.
+                return true;
+            }
+
+            if (tokenBefore.type === "Punctuator" && (tokenBefore.value === "++" || tokenBefore.value === "--")) {
+
+                // If the last token is ++ or --, insert a semicolon to avoid disrupting ASI.
+                return true;
+            }
+
+            // Otherwise, do not insert a semicolon.
+            return false;
+        }
+
+        /**
+         * Reports "Unnecessary { after ..." error
+         * @param {ASTNode} node The node to report.
+         * @param {ASTNode} bodyNode The block statement that is incorrectly surrounded by parens
+         * @param {string} name The name to report.
+         * @param {string} suffix Additional string to add to the end of a report.
+         * @returns {void}
+         * @private
+         */
+        function reportUnnecessaryBraceError(node, bodyNode, name, suffix) {
+            context.report({
+                node,
+                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                message: "Unnecessary { after '{{name}}'{{suffix}}.",
+                data: {
+                    name,
+                    suffix: (suffix ? ` ${suffix}` : "")
+                },
+                fix(fixer) {
+
+                    // `do while` expressions sometimes need a space to be inserted after `do`.
+                    // e.g. `do{foo()} while (bar)` should be corrected to `do foo() while (bar)`
+                    const needsPrecedingSpace = node.type === "DoWhileStatement" &&
+                        sourceCode.getTokenBefore(bodyNode).end === bodyNode.start &&
+                        esUtils.code.isIdentifierPartES6(sourceCode.getText(bodyNode).charCodeAt(1));
+
+                    const openingBracket = sourceCode.getFirstToken(bodyNode);
+                    const closingBracket = sourceCode.getLastToken(bodyNode);
+                    const lastTokenInBlock = sourceCode.getTokenBefore(closingBracket);
+
+                    if (needsSemicolon(closingBracket)) {
+
+                        /*
+                         * If removing braces would cause a SyntaxError due to multiple statements on the same line (or
+                         * change the semantics of the code due to ASI), don't perform a fix.
+                         */
+                        return null;
+                    }
+
+                    const resultingBodyText = sourceCode.getText().slice(openingBracket.range[1], lastTokenInBlock.range[0]) +
+                        sourceCode.getText(lastTokenInBlock) +
+                        sourceCode.getText().slice(lastTokenInBlock.range[1], closingBracket.range[0]);
+
+                    return fixer.replaceText(bodyNode, (needsPrecedingSpace ? " " : "") + resultingBodyText);
+                }
+            });
+        }
+
+        /**
+         * Prepares to check the body of a node to see if it's a block statement.
+         * @param {ASTNode} node The node to report if there's a problem.
+         * @param {ASTNode} body The body node to check for blocks.
+         * @param {string} name The name to report if there's a problem.
+         * @param {string} suffix Additional string to add to the end of a report.
+         * @returns {Object} a prepared check object, with "actual", "expected", "check" properties.
+         *   "actual" will be `true` or `false` whether the body is already a block statement.
+         *   "expected" will be `true` or `false` if the body should be a block statement or not, or
+         *   `null` if it doesn't matter, depending on the rule options. It can be modified to change
+         *   the final behavior of "check".
+         *   "check" will be a function reporting appropriate problems depending on the other
+         *   properties.
+         */
+        function prepareCheck(node, body, name, suffix) {
+            const hasBlock = (body.type === "BlockStatement");
+            let expected = null;
+
+            if (node.type === "IfStatement" && node.consequent === body && requiresBraceOfConsequent(node)) {
+                expected = true;
+            } else if (multiOnly) {
+                if (hasBlock && body.body.length === 1) {
+                    expected = false;
+                }
+            } else if (multiLine) {
+                if (!isCollapsedOneLiner(body)) {
+                    expected = true;
+                }
+            } else if (multiOrNest) {
+                if (hasBlock && body.body.length === 1 && isOneLiner(body.body[0])) {
+                    const leadingComments = sourceCode.getComments(body.body[0]).leading;
+
+                    expected = leadingComments.length > 0;
+                } else if (!isOneLiner(body)) {
+                    expected = true;
+                }
+            } else {
+                expected = true;
+            }
+
+            return {
+                actual: hasBlock,
+                expected,
+                check() {
+                    if (this.expected !== null && this.expected !== this.actual) {
+                        if (this.expected) {
+                            reportExpectedBraceError(node, body, name, suffix);
+                        } else {
+                            reportUnnecessaryBraceError(node, body, name, suffix);
+                        }
+                    }
+                }
+            };
+        }
+
+        /**
+         * Prepares to check the bodies of a "if", "else if" and "else" chain.
+         * @param {ASTNode} node The first IfStatement node of the chain.
+         * @returns {Object[]} prepared checks for each body of the chain. See `prepareCheck` for more
+         *   information.
+         */
+        function prepareIfChecks(node) {
+            const preparedChecks = [];
+
+            do {
+                preparedChecks.push(prepareCheck(node, node.consequent, "if", "condition"));
+                if (node.alternate && node.alternate.type !== "IfStatement") {
+                    preparedChecks.push(prepareCheck(node, node.alternate, "else"));
+                    break;
+                }
+                node = node.alternate;
+            } while (node);
+
+            if (consistent) {
+
+                /*
+                 * If any node should have or already have braces, make sure they
+                 * all have braces.
+                 * If all nodes shouldn't have braces, make sure they don't.
+                 */
+                const expected = preparedChecks.some(preparedCheck => {
+                    if (preparedCheck.expected !== null) {
+                        return preparedCheck.expected;
+                    }
+                    return preparedCheck.actual;
+                });
+
+                preparedChecks.forEach(preparedCheck => {
+                    preparedCheck.expected = expected;
+                });
+            }
+
+            return preparedChecks;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            IfStatement(node) {
+                if (node.parent.type !== "IfStatement") {
+                    prepareIfChecks(node).forEach(preparedCheck => {
+                        preparedCheck.check();
+                    });
+                }
+            },
+
+            WhileStatement(node) {
+                prepareCheck(node, node.body, "while", "condition").check();
+            },
+
+            DoWhileStatement(node) {
+                prepareCheck(node, node.body, "do").check();
+            },
+
+            ForStatement(node) {
+                prepareCheck(node, node.body, "for", "condition").check();
+            },
+
+            ForInStatement(node) {
+                prepareCheck(node, node.body, "for-in").check();
+            },
+
+            ForOfStatement(node) {
+                prepareCheck(node, node.body, "for-of").check();
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/default-case.js

@@ -0,0 +1,90 @@
+/**
+ * @fileoverview require default case in switch statements
+ * @author Aliaksei Shytkin
+ */
+"use strict";
+
+const DEFAULT_COMMENT_PATTERN = /^no default$/i;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `default` cases in `switch` statements",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                commentPattern: {
+                    type: "string"
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const commentPattern = options.commentPattern
+            ? new RegExp(options.commentPattern)
+            : DEFAULT_COMMENT_PATTERN;
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Shortcut to get last element of array
+         * @param  {*[]} collection Array
+         * @returns {*} Last element
+         */
+        function last(collection) {
+            return collection[collection.length - 1];
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            SwitchStatement(node) {
+
+                if (!node.cases.length) {
+
+                    /*
+                     * skip check of empty switch because there is no easy way
+                     * to extract comments inside it now
+                     */
+                    return;
+                }
+
+                const hasDefault = node.cases.some(v => v.test === null);
+
+                if (!hasDefault) {
+
+                    let comment;
+
+                    const lastCase = last(node.cases);
+                    const comments = sourceCode.getComments(lastCase).trailing;
+
+                    if (comments.length) {
+                        comment = last(comments);
+                    }
+
+                    if (!comment || !commentPattern.test(comment.value.trim())) {
+                        context.report({ node, message: "Expected a default case." });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/dot-location.js

@@ -0,0 +1,88 @@
+/**
+ * @fileoverview Validates newlines before and after dots
+ * @author Greg Cochard
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent newlines before and after dots",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                enum: ["object", "property"]
+            }
+        ],
+
+        fixable: "code"
+    },
+
+    create(context) {
+
+        const config = context.options[0];
+
+        // default to onObject if no preference is passed
+        const onObject = config === "object" || !config;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports if the dot between object and property is on the correct loccation.
+         * @param {ASTNode} obj The object owning the property.
+         * @param {ASTNode} prop The property of the object.
+         * @param {ASTNode} node The corresponding node of the token.
+         * @returns {void}
+         */
+        function checkDotLocation(obj, prop, node) {
+            const dot = sourceCode.getTokenBefore(prop);
+            const textBeforeDot = sourceCode.getText().slice(obj.range[1], dot.range[0]);
+            const textAfterDot = sourceCode.getText().slice(dot.range[1], prop.range[0]);
+
+            if (dot.type === "Punctuator" && dot.value === ".") {
+                if (onObject) {
+                    if (!astUtils.isTokenOnSameLine(obj, dot)) {
+                        const neededTextAfterObj = astUtils.isDecimalInteger(obj) ? " " : "";
+
+                        context.report({
+                            node,
+                            loc: dot.loc.start,
+                            message: "Expected dot to be on same line as object.",
+                            fix: fixer => fixer.replaceTextRange([obj.range[1], prop.range[0]], `${neededTextAfterObj}.${textBeforeDot}${textAfterDot}`)
+                        });
+                    }
+                } else if (!astUtils.isTokenOnSameLine(dot, prop)) {
+                    context.report({
+                        node,
+                        loc: dot.loc.start,
+                        message: "Expected dot to be on same line as property.",
+                        fix: fixer => fixer.replaceTextRange([obj.range[1], prop.range[0]], `${textBeforeDot}${textAfterDot}.`)
+                    });
+                }
+            }
+        }
+
+        /**
+         * Checks the spacing of the dot within a member expression.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNode(node) {
+            checkDotLocation(node.object, node.property, node);
+        }
+
+        return {
+            MemberExpression: checkNode
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/dot-notation.js

@@ -0,0 +1,123 @@
+/**
+ * @fileoverview Rule to warn about using dot notation instead of square bracket notation when possible.
+ * @author Josh Perez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const validIdentifier = /^[a-zA-Z_$][a-zA-Z0-9_$]*$/;
+const keywords = require("../util/keywords");
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce dot notation whenever possible",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowKeywords: {
+                        type: "boolean"
+                    },
+                    allowPattern: {
+                        type: "string"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowKeywords = options.allowKeywords === void 0 || !!options.allowKeywords;
+        const sourceCode = context.getSourceCode();
+
+        let allowPattern;
+
+        if (options.allowPattern) {
+            allowPattern = new RegExp(options.allowPattern);
+        }
+
+        return {
+            MemberExpression(node) {
+                if (
+                    node.computed &&
+                    node.property.type === "Literal" &&
+                    validIdentifier.test(node.property.value) &&
+                    (allowKeywords || keywords.indexOf(String(node.property.value)) === -1)
+                ) {
+                    if (!(allowPattern && allowPattern.test(node.property.value))) {
+                        context.report({
+                            node: node.property,
+                            message: "[{{propertyValue}}] is better written in dot notation.",
+                            data: {
+                                propertyValue: JSON.stringify(node.property.value)
+                            },
+                            fix(fixer) {
+                                const leftBracket = sourceCode.getTokenAfter(node.object, astUtils.isOpeningBracketToken);
+                                const rightBracket = sourceCode.getLastToken(node);
+
+                                if (sourceCode.getFirstTokenBetween(leftBracket, rightBracket, { includeComments: true, filter: astUtils.isCommentToken })) {
+
+                                    // Don't perform any fixes if there are comments inside the brackets.
+                                    return null;
+                                }
+
+                                const textBeforeDot = astUtils.isDecimalInteger(node.object) ? " " : "";
+
+                                return fixer.replaceTextRange(
+                                    [leftBracket.range[0], rightBracket.range[1]],
+                                    `${textBeforeDot}.${node.property.value}`
+                                );
+                            }
+                        });
+                    }
+                }
+                if (
+                    !allowKeywords &&
+                    !node.computed &&
+                    keywords.indexOf(String(node.property.name)) !== -1
+                ) {
+                    context.report({
+                        node: node.property,
+                        message: ".{{propertyName}} is a syntax error.",
+                        data: {
+                            propertyName: node.property.name
+                        },
+                        fix(fixer) {
+                            const dot = sourceCode.getTokenBefore(node.property);
+                            const textAfterDot = sourceCode.text.slice(dot.range[1], node.property.range[0]);
+
+                            if (textAfterDot.trim()) {
+
+                                // Don't perform any fixes if there are comments between the dot and the property name.
+                                return null;
+                            }
+
+                            return fixer.replaceTextRange(
+                                [dot.range[0], node.property.range[1]],
+                                `[${textAfterDot}"${node.property.name}"]`
+                            );
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/eol-last.js

@@ -0,0 +1,94 @@
+/**
+ * @fileoverview Require or disallow newline at the end of files
+ * @author Nodeca Team <https://github.com/nodeca>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow newline at the end of files",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "whitespace",
+        schema: [
+            {
+                enum: ["always", "never", "unix", "windows"]
+            }
+        ]
+    },
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkBadEOF(node) {
+                const sourceCode = context.getSourceCode(),
+                    src = sourceCode.getText(),
+                    location = {
+                        column: lodash.last(sourceCode.lines).length,
+                        line: sourceCode.lines.length
+                    },
+                    LF = "\n",
+                    CRLF = `\r${LF}`,
+                    endsWithNewline = lodash.endsWith(src, LF);
+
+                let mode = context.options[0] || "always",
+                    appendCRLF = false;
+
+                if (mode === "unix") {
+
+                    // `"unix"` should behave exactly as `"always"`
+                    mode = "always";
+                }
+                if (mode === "windows") {
+
+                    // `"windows"` should behave exactly as `"always"`, but append CRLF in the fixer for backwards compatibility
+                    mode = "always";
+                    appendCRLF = true;
+                }
+                if (mode === "always" && !endsWithNewline) {
+
+                    // File is not newline-terminated, but should be
+                    context.report({
+                        node,
+                        loc: location,
+                        message: "Newline required at end of file but not found.",
+                        fix(fixer) {
+                            return fixer.insertTextAfterRange([0, src.length], appendCRLF ? CRLF : LF);
+                        }
+                    });
+                } else if (mode === "never" && endsWithNewline) {
+
+                    // File is newline-terminated, but shouldn't be
+                    context.report({
+                        node,
+                        loc: location,
+                        message: "Newline not allowed at end of file.",
+                        fix(fixer) {
+                            const finalEOLs = /(?:\r?\n)+$/,
+                                match = finalEOLs.exec(sourceCode.text),
+                                start = match.index,
+                                end = sourceCode.text.length;
+
+                            return fixer.replaceTextRange([start, end], "");
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/eqeqeq.js

@@ -0,0 +1,180 @@
+/**
+ * @fileoverview Rule to flag statements that use != and == instead of !== and ===
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require the use of `===` and `!==`",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                null: {
+                                    enum: ["always", "never", "ignore"]
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    additionalItems: false
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["smart", "allow-null"]
+                        }
+                    ],
+                    additionalItems: false
+                }
+            ]
+        },
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const config = context.options[0] || "always";
+        const options = context.options[1] || {};
+        const sourceCode = context.getSourceCode();
+
+        const nullOption = (config === "always")
+            ? options.null || "always"
+            : "ignore";
+        const enforceRuleForNull = (nullOption === "always");
+        const enforceInverseRuleForNull = (nullOption === "never");
+
+        /**
+         * Checks if an expression is a typeof expression
+         * @param  {ASTNode} node The node to check
+         * @returns {boolean} if the node is a typeof expression
+         */
+        function isTypeOf(node) {
+            return node.type === "UnaryExpression" && node.operator === "typeof";
+        }
+
+        /**
+         * Checks if either operand of a binary expression is a typeof operation
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if one of the operands is typeof
+         * @private
+         */
+        function isTypeOfBinary(node) {
+            return isTypeOf(node.left) || isTypeOf(node.right);
+        }
+
+        /**
+         * Checks if operands are literals of the same type (via typeof)
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are of same type
+         * @private
+         */
+        function areLiteralsAndSameType(node) {
+            return node.left.type === "Literal" && node.right.type === "Literal" &&
+                    typeof node.left.value === typeof node.right.value;
+        }
+
+        /**
+         * Checks if one of the operands is a literal null
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are null
+         * @private
+         */
+        function isNullCheck(node) {
+            return astUtils.isNullLiteral(node.right) || astUtils.isNullLiteral(node.left);
+        }
+
+        /**
+         * Gets the location (line and column) of the binary expression's operator
+         * @param {ASTNode} node The binary expression node to check
+         * @param {string} operator The operator to find
+         * @returns {Object} { line, column } location of operator
+         * @private
+         */
+        function getOperatorLocation(node) {
+            const opToken = sourceCode.getTokenAfter(node.left);
+
+            return { line: opToken.loc.start.line, column: opToken.loc.start.column };
+        }
+
+        /**
+         * Reports a message for this rule.
+         * @param {ASTNode} node The binary expression node that was checked
+         * @param {string} expectedOperator The operator that was expected (either '==', '!=', '===', or '!==')
+         * @returns {void}
+         * @private
+         */
+        function report(node, expectedOperator) {
+            context.report({
+                node,
+                loc: getOperatorLocation(node),
+                message: "Expected '{{expectedOperator}}' and instead saw '{{actualOperator}}'.",
+                data: { expectedOperator, actualOperator: node.operator },
+                fix(fixer) {
+
+                    // If the comparison is a `typeof` comparison or both sides are literals with the same type, then it's safe to fix.
+                    if (isTypeOfBinary(node) || areLiteralsAndSameType(node)) {
+                        const operatorToken = sourceCode.getFirstTokenBetween(
+                            node.left,
+                            node.right,
+                            token => token.value === node.operator
+                        );
+
+                        return fixer.replaceText(operatorToken, expectedOperator);
+                    }
+                    return null;
+                }
+            });
+        }
+
+        return {
+            BinaryExpression(node) {
+                const isNull = isNullCheck(node);
+
+                if (node.operator !== "==" && node.operator !== "!=") {
+                    if (enforceInverseRuleForNull && isNull) {
+                        report(node, node.operator.slice(0, -1));
+                    }
+                    return;
+                }
+
+                if (config === "smart" && (isTypeOfBinary(node) ||
+                        areLiteralsAndSameType(node) || isNull)) {
+                    return;
+                }
+
+                if (!enforceRuleForNull && isNull) {
+                    return;
+                }
+
+                report(node, `${node.operator}=`);
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/func-call-spacing.js

@@ -0,0 +1,157 @@
+/**
+ * @fileoverview Rule to control spacing within function calls
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow spacing between function identifiers and their invocations",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                allowNewlines: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        }
+    },
+
+    create(context) {
+
+        const never = context.options[0] !== "always";
+        const allowNewlines = !never && context.options[1] && context.options[1].allowNewlines;
+        const sourceCode = context.getSourceCode();
+        const text = sourceCode.getText();
+
+        /**
+         * Check if open space is present in a function name
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkSpacing(node) {
+            const lastToken = sourceCode.getLastToken(node);
+            const lastCalleeToken = sourceCode.getLastToken(node.callee);
+            const parenToken = sourceCode.getFirstTokenBetween(lastCalleeToken, lastToken, astUtils.isOpeningParenToken);
+            const prevToken = parenToken && sourceCode.getTokenBefore(parenToken);
+
+            // Parens in NewExpression are optional
+            if (!(parenToken && parenToken.range[1] < node.range[1])) {
+                return;
+            }
+
+            const textBetweenTokens = text.slice(prevToken.range[1], parenToken.range[0]).replace(/\/\*.*?\*\//g, "");
+            const hasWhitespace = /\s/.test(textBetweenTokens);
+            const hasNewline = hasWhitespace && astUtils.LINEBREAK_MATCHER.test(textBetweenTokens);
+
+            /*
+             * never allowNewlines hasWhitespace hasNewline message
+             * F     F             F             F          Missing space between function name and paren.
+             * F     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     F             T             T          Unexpected newline between function name and paren.
+             * F     F             T             F          (OK)
+             * F     T             T             F          (OK)
+             * F     T             T             T          (OK)
+             * F     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     T             F             F          Missing space between function name and paren.
+             * T     T             F             F          (Invalid `never && allowNewlines`)
+             * T     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     T             T             T          (Invalid `never && allowNewlines`)
+             * T     T             T             F          (Invalid `never && allowNewlines`)
+             * T     F             T             F          Unexpected space between function name and paren.
+             * T     F             T             T          Unexpected space between function name and paren.
+             * T     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     F             F             F          (OK)
+             *
+             * T                   T                        Unexpected space between function name and paren.
+             * F                   F                        Missing space between function name and paren.
+             * F     F                           T          Unexpected newline between function name and paren.
+             */
+
+            if (never && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    message: "Unexpected space between function name and paren.",
+                    fix(fixer) {
+
+                        // Only autofix if there is no newline
+                        // https://github.com/eslint/eslint/issues/7787
+                        if (!hasNewline) {
+                            return fixer.removeRange([prevToken.range[1], parenToken.range[0]]);
+                        }
+
+                        return null;
+                    }
+                });
+            } else if (!never && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    message: "Missing space between function name and paren.",
+                    fix(fixer) {
+                        return fixer.insertTextBefore(parenToken, " ");
+                    }
+                });
+            } else if (!never && !allowNewlines && hasNewline) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    message: "Unexpected newline between function name and paren.",
+                    fix(fixer) {
+                        return fixer.replaceTextRange([prevToken.range[1], parenToken.range[0]], " ");
+                    }
+                });
+            }
+        }
+
+        return {
+            CallExpression: checkSpacing,
+            NewExpression: checkSpacing
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/func-name-matching.js

@@ -0,0 +1,193 @@
+/**
+ * @fileoverview Rule to require function names to match the name of the variable or property to which they are assigned.
+ * @author Annie Zhang, Pavel Strashkin
+ */
+
+"use strict";
+
+//--------------------------------------------------------------------------
+// Requirements
+//--------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+const esutils = require("esutils");
+
+//--------------------------------------------------------------------------
+// Helpers
+//--------------------------------------------------------------------------
+
+/**
+ * Determines if a pattern is `module.exports` or `module["exports"]`
+ * @param {ASTNode} pattern The left side of the AssignmentExpression
+ * @returns {boolean} True if the pattern is `module.exports` or `module["exports"]`
+ */
+function isModuleExports(pattern) {
+    if (pattern.type === "MemberExpression" && pattern.object.type === "Identifier" && pattern.object.name === "module") {
+
+        // module.exports
+        if (pattern.property.type === "Identifier" && pattern.property.name === "exports") {
+            return true;
+        }
+
+        // module["exports"]
+        if (pattern.property.type === "Literal" && pattern.property.value === "exports") {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Determines if a string name is a valid identifier
+ * @param {string} name The string to be checked
+ * @param {int} ecmaVersion The ECMAScript version if specified in the parserOptions config
+ * @returns {boolean} True if the string is a valid identifier
+ */
+function isIdentifier(name, ecmaVersion) {
+    if (ecmaVersion >= 6) {
+        return esutils.keyword.isIdentifierES6(name);
+    }
+    return esutils.keyword.isIdentifierES5(name);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const alwaysOrNever = { enum: ["always", "never"] };
+const optionsObject = {
+    type: "object",
+    properties: {
+        includeCommonJSModuleExports: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require function names to match the name of the variable or property to which they are assigned",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: {
+            anyOf: [{
+                type: "array",
+                additionalItems: false,
+                items: [alwaysOrNever, optionsObject]
+            }, {
+                type: "array",
+                additionalItems: false,
+                items: [optionsObject]
+            }]
+        }
+    },
+
+    create(context) {
+        const options = (typeof context.options[0] === "object" ? context.options[0] : context.options[1]) || {};
+        const nameMatches = typeof context.options[0] === "string" ? context.options[0] : "always";
+        const includeModuleExports = options.includeCommonJSModuleExports;
+        const ecmaVersion = context.parserOptions && context.parserOptions.ecmaVersion ? context.parserOptions.ecmaVersion : 5;
+
+        /**
+         * Compares identifiers based on the nameMatches option
+         * @param {string} x the first identifier
+         * @param {string} y the second identifier
+         * @returns {boolean} whether the two identifiers should warn.
+         */
+        function shouldWarn(x, y) {
+            return (nameMatches === "always" && x !== y) || (nameMatches === "never" && x === y);
+        }
+
+        /**
+         * Reports
+         * @param {ASTNode} node The node to report
+         * @param {string} name The variable or property name
+         * @param {string} funcName The function name
+         * @param {boolean} isProp True if the reported node is a property assignment
+         * @returns {void}
+         */
+        function report(node, name, funcName, isProp) {
+            let message;
+
+            if (nameMatches === "always" && isProp) {
+                message = "Function name `{{funcName}}` should match property name `{{name}}`";
+            } else if (nameMatches === "always") {
+                message = "Function name `{{funcName}}` should match variable name `{{name}}`";
+            } else if (isProp) {
+                message = "Function name `{{funcName}}` should not match property name `{{name}}`";
+            } else {
+                message = "Function name `{{funcName}}` should not match variable name `{{name}}`";
+            }
+            context.report({
+                node,
+                message,
+                data: {
+                    name,
+                    funcName
+                }
+            });
+        }
+
+        /**
+         * Determines whether a given node is a string literal
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if the node is a string literal
+         */
+        function isStringLiteral(node) {
+            return node.type === "Literal" && typeof node.value === "string";
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            VariableDeclarator(node) {
+                if (!node.init || node.init.type !== "FunctionExpression" || node.id.type !== "Identifier") {
+                    return;
+                }
+                if (node.init.id && shouldWarn(node.id.name, node.init.id.name)) {
+                    report(node, node.id.name, node.init.id.name, false);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (
+                    node.right.type !== "FunctionExpression" ||
+                    (node.left.computed && node.left.property.type !== "Literal") ||
+                    (!includeModuleExports && isModuleExports(node.left)) ||
+                    (node.left.type !== "Identifier" && node.left.type !== "MemberExpression")
+                ) {
+                    return;
+                }
+
+                const isProp = node.left.type === "MemberExpression";
+                const name = isProp ? astUtils.getStaticPropertyName(node.left) : node.left.name;
+
+                if (node.right.id && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
+                    report(node, name, node.right.id.name, isProp);
+                }
+            },
+
+            Property(node) {
+                if (node.value.type !== "FunctionExpression" || !node.value.id || node.computed && !isStringLiteral(node.key)) {
+                    return;
+                }
+                if (node.key.type === "Identifier" && shouldWarn(node.key.name, node.value.id.name)) {
+                    report(node, node.key.name, node.value.id.name, true);
+                } else if (
+                    isStringLiteral(node.key) &&
+                    isIdentifier(node.key.value, ecmaVersion) &&
+                    shouldWarn(node.key.value, node.value.id.name)
+                ) {
+                    report(node, node.key.value, node.value.id.name, true);
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/func-names.js

@@ -0,0 +1,114 @@
+/**
+ * @fileoverview Rule to warn when a function expression does not have a name.
+ * @author Kyle T. Nunery
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+/**
+ * Checks whether or not a given variable is a function name.
+ * @param {escope.Variable} variable - A variable to check.
+ * @returns {boolean} `true` if the variable is a function name.
+ */
+function isFunctionName(variable) {
+    return variable && variable.defs[0].type === "FunctionName";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow named `function` expressions",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                enum: ["always", "as-needed", "never"]
+            }
+        ]
+    },
+
+    create(context) {
+        const never = context.options[0] === "never";
+        const asNeeded = context.options[0] === "as-needed";
+
+        /**
+         * Determines whether the current FunctionExpression node is a get, set, or
+         * shorthand method in an object literal or a class.
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} True if the node is a get, set, or shorthand method.
+         */
+        function isObjectOrClassMethod(node) {
+            const parent = node.parent;
+
+            return (parent.type === "MethodDefinition" || (
+                parent.type === "Property" && (
+                    parent.method ||
+                    parent.kind === "get" ||
+                    parent.kind === "set"
+                )
+            ));
+        }
+
+        /**
+         * Determines whether the current FunctionExpression node has a name that would be
+         * inferred from context in a conforming ES6 environment.
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} True if the node would have a name assigned automatically.
+         */
+        function hasInferredName(node) {
+            const parent = node.parent;
+
+            return isObjectOrClassMethod(node) ||
+                (parent.type === "VariableDeclarator" && parent.id.type === "Identifier" && parent.init === node) ||
+                (parent.type === "Property" && parent.value === node) ||
+                (parent.type === "AssignmentExpression" && parent.left.type === "Identifier" && parent.right === node) ||
+                (parent.type === "ExportDefaultDeclaration" && parent.declaration === node) ||
+                (parent.type === "AssignmentPattern" && parent.right === node);
+        }
+
+        return {
+            "FunctionExpression:exit"(node) {
+
+                // Skip recursive functions.
+                const nameVar = context.getDeclaredVariables(node)[0];
+
+                if (isFunctionName(nameVar) && nameVar.references.length > 0) {
+                    return;
+                }
+
+                const hasName = Boolean(node.id && node.id.name);
+                const name = astUtils.getFunctionNameWithKind(node);
+
+                if (never) {
+                    if (hasName) {
+                        context.report({
+                            node,
+                            message: "Unexpected named {{name}}.",
+                            data: { name }
+                        });
+                    }
+                } else {
+                    if (!hasName && (asNeeded ? !hasInferredName(node) : !isObjectOrClassMethod(node))) {
+                        context.report({
+                            node,
+                            message: "Unexpected unnamed {{name}}.",
+                            data: { name }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/func-style.js

@@ -0,0 +1,89 @@
+/**
+ * @fileoverview Rule to enforce a particular function style
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce the consistent use of either `function` declarations or expressions",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                enum: ["declaration", "expression"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowArrowFunctions: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const style = context.options[0],
+            allowArrowFunctions = context.options[1] && context.options[1].allowArrowFunctions === true,
+            enforceDeclarations = (style === "declaration"),
+            stack = [];
+
+        const nodesToCheck = {
+            FunctionDeclaration(node) {
+                stack.push(false);
+
+                if (!enforceDeclarations && node.parent.type !== "ExportDefaultDeclaration") {
+                    context.report({ node, message: "Expected a function expression." });
+                }
+            },
+            "FunctionDeclaration:exit"() {
+                stack.pop();
+            },
+
+            FunctionExpression(node) {
+                stack.push(false);
+
+                if (enforceDeclarations && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, message: "Expected a function declaration." });
+                }
+            },
+            "FunctionExpression:exit"() {
+                stack.pop();
+            },
+
+            ThisExpression() {
+                if (stack.length > 0) {
+                    stack[stack.length - 1] = true;
+                }
+            }
+        };
+
+        if (!allowArrowFunctions) {
+            nodesToCheck.ArrowFunctionExpression = function() {
+                stack.push(false);
+            };
+
+            nodesToCheck["ArrowFunctionExpression:exit"] = function(node) {
+                const hasThisExpr = stack.pop();
+
+                if (enforceDeclarations && !hasThisExpr && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, message: "Expected a function declaration." });
+                }
+            };
+        }
+
+        return nodesToCheck;
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/generator-star-spacing.js

@@ -0,0 +1,148 @@
+/**
+ * @fileoverview Rule to check the spacing around the * in generator functions.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing around `*` operators in generator functions",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["before", "after", "both", "neither"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            before: { type: "boolean" },
+                            after: { type: "boolean" }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const mode = (function(option) {
+            if (!option || typeof option === "string") {
+                return {
+                    before: { before: true, after: false },
+                    after: { before: false, after: true },
+                    both: { before: true, after: true },
+                    neither: { before: false, after: false }
+                }[option || "before"];
+            }
+            return option;
+        }(context.options[0]));
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Checks if the given token is a star token or not.
+         *
+         * @param {Token} token - The token to check.
+         * @returns {boolean} `true` if the token is a star token.
+         */
+        function isStarToken(token) {
+            return token.value === "*" && token.type === "Punctuator";
+        }
+
+        /**
+         * Gets the generator star token of the given function node.
+         *
+         * @param {ASTNode} node - The function node to get.
+         * @returns {Token} Found star token.
+         */
+        function getStarToken(node) {
+            return sourceCode.getFirstToken(
+                (node.parent.method || node.parent.type === "MethodDefinition") ? node.parent : node,
+                isStarToken
+            );
+        }
+
+        /**
+         * Checks the spacing between two tokens before or after the star token.
+         * @param {string} side Either "before" or "after".
+         * @param {Token} leftToken `function` keyword token if side is "before", or
+         *     star token if side is "after".
+         * @param {Token} rightToken Star token if side is "before", or identifier
+         *     token if side is "after".
+         * @returns {void}
+         */
+        function checkSpacing(side, leftToken, rightToken) {
+            if (!!(rightToken.range[0] - leftToken.range[1]) !== mode[side]) {
+                const after = leftToken.value === "*";
+                const spaceRequired = mode[side];
+                const node = after ? leftToken : rightToken;
+                const type = spaceRequired ? "Missing" : "Unexpected";
+                const message = "{{type}} space {{side}} *.";
+                const data = {
+                    type,
+                    side
+                };
+
+                context.report({
+                    node,
+                    message,
+                    data,
+                    fix(fixer) {
+                        if (spaceRequired) {
+                            if (after) {
+                                return fixer.insertTextAfter(node, " ");
+                            }
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Enforces the spacing around the star if node is a generator function.
+         * @param {ASTNode} node A function expression or declaration node.
+         * @returns {void}
+         */
+        function checkFunction(node) {
+            if (!node.generator) {
+                return;
+            }
+
+            const starToken = getStarToken(node);
+
+            // Only check before when preceded by `function`|`static` keyword
+            const prevToken = sourceCode.getTokenBefore(starToken);
+
+            if (prevToken.value === "function" || prevToken.value === "static") {
+                checkSpacing("before", prevToken, starToken);
+            }
+
+            const nextToken = sourceCode.getTokenAfter(starToken);
+
+            checkSpacing("after", starToken, nextToken);
+        }
+
+        return {
+            FunctionDeclaration: checkFunction,
+            FunctionExpression: checkFunction
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/global-require.js

@@ -0,0 +1,75 @@
+/**
+ * @fileoverview Rule for disallowing require() outside of the top-level module context
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+const ACCEPTABLE_PARENTS = [
+    "AssignmentExpression",
+    "VariableDeclarator",
+    "MemberExpression",
+    "ExpressionStatement",
+    "CallExpression",
+    "ConditionalExpression",
+    "Program",
+    "VariableDeclaration"
+];
+
+/**
+ * Finds the escope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    /* istanbul ignore else: correctly returns null */
+    if (references.length === 1) {
+        return references[0];
+    }
+    return null;
+
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {ASTNode} node The identifier node to check.
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `require()` calls to be placed at top-level module scope",
+            category: "Node.js and CommonJS",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        return {
+            CallExpression(node) {
+                const currentScope = context.getScope();
+
+                if (node.callee.name === "require" && !isShadowed(currentScope, node.callee)) {
+                    const isGoodRequire = context.getAncestors().every(parent => ACCEPTABLE_PARENTS.indexOf(parent.type) > -1);
+
+                    if (!isGoodRequire) {
+                        context.report({ node, message: "Unexpected require()." });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/guard-for-in.js

@@ -0,0 +1,42 @@
+/**
+ * @fileoverview Rule to flag for-in loops without if statements inside
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require `for-in` loops to include an `if` statement",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+
+            ForInStatement(node) {
+
+                /*
+                 * If the for-in statement has {}, then the real body is the body
+                 * of the BlockStatement. Otherwise, just use body as provided.
+                 */
+                const body = node.body.type === "BlockStatement" ? node.body.body[0] : node.body;
+
+                if (body && body.type !== "IfStatement") {
+                    context.report({ node, message: "The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype." });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/handle-callback-err.js

@@ -0,0 +1,89 @@
+/**
+ * @fileoverview Ensure handling of errors when we know they exist.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require error handling in callbacks",
+            category: "Node.js and CommonJS",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "string"
+            }
+        ]
+    },
+
+    create(context) {
+
+        const errorArgument = context.options[0] || "err";
+
+        /**
+         * Checks if the given argument should be interpreted as a regexp pattern.
+         * @param {string} stringToCheck The string which should be checked.
+         * @returns {boolean} Whether or not the string should be interpreted as a pattern.
+         */
+        function isPattern(stringToCheck) {
+            const firstChar = stringToCheck[0];
+
+            return firstChar === "^";
+        }
+
+        /**
+         * Checks if the given name matches the configured error argument.
+         * @param {string} name The name which should be compared.
+         * @returns {boolean} Whether or not the given name matches the configured error variable name.
+         */
+        function matchesConfiguredErrorName(name) {
+            if (isPattern(errorArgument)) {
+                const regexp = new RegExp(errorArgument);
+
+                return regexp.test(name);
+            }
+            return name === errorArgument;
+        }
+
+        /**
+         * Get the parameters of a given function scope.
+         * @param {Object} scope The function scope.
+         * @returns {array} All parameters of the given scope.
+         */
+        function getParameters(scope) {
+            return scope.variables.filter(variable => variable.defs[0] && variable.defs[0].type === "Parameter");
+        }
+
+        /**
+         * Check to see if we're handling the error object properly.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         */
+        function checkForError(node) {
+            const scope = context.getScope(),
+                parameters = getParameters(scope),
+                firstParameter = parameters[0];
+
+            if (firstParameter && matchesConfiguredErrorName(firstParameter.name)) {
+                if (firstParameter.references.length === 0) {
+                    context.report({ node, message: "Expected error to be handled." });
+                }
+            }
+        }
+
+        return {
+            FunctionDeclaration: checkForError,
+            FunctionExpression: checkForError,
+            ArrowFunctionExpression: checkForError
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/id-blacklist.js

@@ -0,0 +1,117 @@
+/**
+ * @fileoverview Rule that warns when identifier names that are
+ * blacklisted in the configuration are used.
+ * @author Keith Cirkel (http://keithcirkel.co.uk)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow specified identifiers",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        }
+    },
+
+    create(context) {
+
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const blacklist = context.options;
+
+
+        /**
+         * Checks if a string matches the provided pattern
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function isInvalid(name) {
+            return blacklist.indexOf(name) !== -1;
+        }
+
+        /**
+         * Verifies if we should report an error or not based on the effective
+         * parent node and the identifier name.
+         * @param {ASTNode} effectiveParent The effective parent node of the node to be reported
+         * @param {string} name The identifier name of the identifier node
+         * @returns {boolean} whether an error should be reported or not
+         */
+        function shouldReport(effectiveParent, name) {
+            return effectiveParent.type !== "CallExpression" &&
+                effectiveParent.type !== "NewExpression" &&
+                isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            context.report({ node, message: "Identifier '{{name}}' is blacklisted.", data: {
+                name: node.name
+            } });
+        }
+
+        return {
+
+            Identifier(node) {
+                const name = node.name,
+                    effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
+
+                // MemberExpressions get special rules
+                if (node.parent.type === "MemberExpression") {
+
+                    // Always check object names
+                    if (node.parent.object.type === "Identifier" &&
+                        node.parent.object.name === node.name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                        // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        (effectiveParent.right.type !== "MemberExpression" ||
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.name === node.name)) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                // Properties have their own rules
+                } else if (node.parent.type === "Property") {
+
+                    if (shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                // Report anything that is a match and not a CallExpression
+                } else if (shouldReport(effectiveParent, name)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/id-length.js

@@ -0,0 +1,116 @@
+/**
+ * @fileoverview Rule that warns when identifier names are shorter or longer
+ * than the values provided in configuration.
+ * @author Burak Yigit Kaya aka BYK
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce minimum and maximum identifier lengths",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    min: {
+                        type: "number"
+                    },
+                    max: {
+                        type: "number"
+                    },
+                    exceptions: {
+                        type: "array",
+                        uniqueItems: true,
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    properties: {
+                        enum: ["always", "never"]
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const minLength = typeof options.min !== "undefined" ? options.min : 2;
+        const maxLength = typeof options.max !== "undefined" ? options.max : Infinity;
+        const properties = options.properties !== "never";
+        const exceptions = (options.exceptions ? options.exceptions : [])
+            .reduce((obj, item) => {
+                obj[item] = true;
+
+                return obj;
+            }, {});
+
+        const SUPPORTED_EXPRESSIONS = {
+            MemberExpression: properties && function(parent) {
+                return !parent.computed && (
+
+                    // regular property assignment
+                    (parent.parent.left === parent && parent.parent.type === "AssignmentExpression" ||
+
+                    // or the last identifier in an ObjectPattern destructuring
+                    parent.parent.type === "Property" && parent.parent.value === parent &&
+                    parent.parent.parent.type === "ObjectPattern" && parent.parent.parent.parent.left === parent.parent.parent)
+                );
+            },
+            AssignmentPattern(parent, node) {
+                return parent.left === node;
+            },
+            VariableDeclarator(parent, node) {
+                return parent.id === node;
+            },
+            Property: properties && function(parent, node) {
+                return parent.key === node;
+            },
+            ImportDefaultSpecifier: true,
+            RestElement: true,
+            FunctionExpression: true,
+            ArrowFunctionExpression: true,
+            ClassDeclaration: true,
+            FunctionDeclaration: true,
+            MethodDefinition: true,
+            CatchClause: true
+        };
+
+        return {
+            Identifier(node) {
+                const name = node.name;
+                const parent = node.parent;
+
+                const isShort = name.length < minLength;
+                const isLong = name.length > maxLength;
+
+                if (!(isShort || isLong) || exceptions[name]) {
+                    return;  // Nothing to report
+                }
+
+                const isValidExpression = SUPPORTED_EXPRESSIONS[parent.type];
+
+                if (isValidExpression && (isValidExpression === true || isValidExpression(parent, node))) {
+                    context.report({
+                        node,
+                        message: isShort
+                            ? "Identifier name '{{name}}' is too short (< {{min}})."
+                            : "Identifier name '{{name}}' is too long (> {{max}}).",
+                        data: { name, min: minLength, max: maxLength }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/id-match.js

@@ -0,0 +1,140 @@
+/**
+ * @fileoverview Rule to flag non-matching identifiers
+ * @author Matthieu Larcher
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require identifiers to match a specified regular expression",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "string"
+            },
+            {
+                type: "object",
+                properties: {
+                    properties: {
+                        type: "boolean"
+                    }
+                }
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const pattern = context.options[0] || "^.+$",
+            regexp = new RegExp(pattern);
+
+        const options = context.options[1] || {},
+            properties = !!options.properties,
+            onlyDeclarations = !!options.onlyDeclarations;
+
+        /**
+         * Checks if a string matches the provided pattern
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function isInvalid(name) {
+            return !regexp.test(name);
+        }
+
+        /**
+         * Verifies if we should report an error or not based on the effective
+         * parent node and the identifier name.
+         * @param {ASTNode} effectiveParent The effective parent node of the node to be reported
+         * @param {string} name The identifier name of the identifier node
+         * @returns {boolean} whether an error should be reported or not
+         */
+        function shouldReport(effectiveParent, name) {
+            return effectiveParent.type !== "CallExpression" &&
+                effectiveParent.type !== "NewExpression" &&
+                isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            context.report({ node, message: "Identifier '{{name}}' does not match the pattern '{{pattern}}'.", data: {
+                name: node.name,
+                pattern
+            } });
+        }
+
+        return {
+
+            Identifier(node) {
+                const name = node.name,
+                    parent = node.parent,
+                    effectiveParent = (parent.type === "MemberExpression") ? parent.parent : parent;
+
+                if (parent.type === "MemberExpression") {
+
+                    if (!properties) {
+                        return;
+                    }
+
+                    // Always check object names
+                    if (parent.object.type === "Identifier" &&
+                        parent.object.name === name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        (effectiveParent.right.type !== "MemberExpression" ||
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.name === name)) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                } else if (parent.type === "Property") {
+
+                    if (!properties || parent.key.name !== name) {
+                        return;
+                    }
+
+                    if (shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                } else {
+                    const isDeclaration = effectiveParent.type === "FunctionDeclaration" || effectiveParent.type === "VariableDeclarator";
+
+                    if (onlyDeclarations && !isDeclaration) {
+                        return;
+                    }
+
+                    if (shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+                }
+            }
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/init-declarations.js

@@ -0,0 +1,137 @@
+/**
+ * @fileoverview A rule to control the style of variable initializations.
+ * @author Colin Ihrig
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a for loop.
+ * @param {ASTNode} block - A node to check.
+ * @returns {boolean} `true` when the node is a for loop.
+ */
+function isForLoop(block) {
+    return block.type === "ForInStatement" ||
+    block.type === "ForOfStatement" ||
+    block.type === "ForStatement";
+}
+
+/**
+ * Checks whether or not a given declarator node has its initializer.
+ * @param {ASTNode} node - A declarator node to check.
+ * @returns {boolean} `true` when the node has its initializer.
+ */
+function isInitialized(node) {
+    const declaration = node.parent;
+    const block = declaration.parent;
+
+    if (isForLoop(block)) {
+        if (block.type === "ForStatement") {
+            return block.init === declaration;
+        }
+        return block.left === declaration;
+    }
+    return Boolean(node.init);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow initialization in variable declarations",
+            category: "Variables",
+            recommended: false
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                ignoreForLoopInit: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        }
+    },
+
+    create(context) {
+
+        const MODE_ALWAYS = "always",
+            MODE_NEVER = "never";
+
+        const mode = context.options[0] || MODE_ALWAYS;
+        const params = context.options[1] || {};
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            "VariableDeclaration:exit"(node) {
+
+                const kind = node.kind,
+                    declarations = node.declarations;
+
+                for (let i = 0; i < declarations.length; ++i) {
+                    const declaration = declarations[i],
+                        id = declaration.id,
+                        initialized = isInitialized(declaration),
+                        isIgnoredForLoop = params.ignoreForLoopInit && isForLoop(node.parent);
+
+                    if (id.type !== "Identifier") {
+                        continue;
+                    }
+
+                    if (mode === MODE_ALWAYS && !initialized) {
+                        context.report({
+                            node: declaration,
+                            message: "Variable '{{idName}}' should be initialized on declaration.",
+                            data: {
+                                idName: id.name
+                            }
+                        });
+                    } else if (mode === MODE_NEVER && kind !== "const" && initialized && !isIgnoredForLoop) {
+                        context.report({
+                            node: declaration,
+                            message: "Variable '{{idName}}' should not be initialized on declaration.",
+                            data: {
+                                idName: id.name
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/jsx-quotes.js

@@ -0,0 +1,89 @@
+/**
+ * @fileoverview A rule to ensure consistent quotes used in jsx syntax.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const QUOTE_SETTINGS = {
+    "prefer-double": {
+        quote: "\"",
+        description: "singlequote",
+        convert(str) {
+            return str.replace(/'/g, "\"");
+        }
+    },
+    "prefer-single": {
+        quote: "'",
+        description: "doublequote",
+        convert(str) {
+            return str.replace(/"/g, "'");
+        }
+    }
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce the consistent use of either double or single quotes in JSX attributes",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["prefer-single", "prefer-double"]
+            }
+        ]
+    },
+
+    create(context) {
+        const quoteOption = context.options[0] || "prefer-double",
+            setting = QUOTE_SETTINGS[quoteOption];
+
+        /**
+         * Checks if the given string literal node uses the expected quotes
+         * @param {ASTNode} node - A string literal node.
+         * @returns {boolean} Whether or not the string literal used the expected quotes.
+         * @public
+         */
+        function usesExpectedQuotes(node) {
+            return node.value.indexOf(setting.quote) !== -1 || astUtils.isSurroundedBy(node.raw, setting.quote);
+        }
+
+        return {
+            JSXAttribute(node) {
+                const attributeValue = node.value;
+
+                if (attributeValue && astUtils.isStringLiteral(attributeValue) && !usesExpectedQuotes(attributeValue)) {
+                    context.report({
+                        node: attributeValue,
+                        message: "Unexpected usage of {{description}}.",
+                        data: {
+                            description: setting.description
+                        },
+                        fix(fixer) {
+                            return fixer.replaceText(attributeValue, setting.convert(attributeValue.raw));
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/key-spacing.js

@@ -0,0 +1,639 @@
+/**
+ * @fileoverview Rule to specify spacing of object literal keys and values
+ * @author Brandon Mills
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether a string contains a line terminator as defined in
+ * http://www.ecma-international.org/ecma-262/5.1/#sec-7.3
+ * @param {string} str String to test.
+ * @returns {boolean} True if str contains a line terminator.
+ */
+function containsLineTerminator(str) {
+    return astUtils.LINEBREAK_MATCHER.test(str);
+}
+
+/**
+ * Gets the last element of an array.
+ * @param {Array} arr An array.
+ * @returns {any} Last element of arr.
+ */
+function last(arr) {
+    return arr[arr.length - 1];
+}
+
+/**
+ * Checks whether a property is a member of the property group it follows.
+ * @param {ASTNode} lastMember The last Property known to be in the group.
+ * @param {ASTNode} candidate The next Property that might be in the group.
+ * @returns {boolean} True if the candidate property is part of the group.
+ */
+function continuesPropertyGroup(lastMember, candidate) {
+    const groupEndLine = lastMember.loc.start.line,
+        candidateStartLine = candidate.loc.start.line;
+
+    if (candidateStartLine - groupEndLine <= 1) {
+        return true;
+    }
+
+    // Check that the first comment is adjacent to the end of the group, the
+    // last comment is adjacent to the candidate property, and that successive
+    // comments are adjacent to each other.
+    const comments = candidate.leadingComments;
+
+    if (
+        comments &&
+        comments[0].loc.start.line - groupEndLine <= 1 &&
+        candidateStartLine - last(comments).loc.end.line <= 1
+    ) {
+        for (let i = 1; i < comments.length; i++) {
+            if (comments[i].loc.start.line - comments[i - 1].loc.end.line > 1) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether a node is contained on a single line.
+ * @param {ASTNode} node AST Node being evaluated.
+ * @returns {boolean} True if the node is a single line.
+ */
+function isSingleLine(node) {
+    return (node.loc.end.line === node.loc.start.line);
+}
+
+/**
+ * Initializes a single option property from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptionProperty(toOptions, fromOptions) {
+    toOptions.mode = fromOptions.mode || "strict";
+
+    // Set value of beforeColon
+    if (typeof fromOptions.beforeColon !== "undefined") {
+        toOptions.beforeColon = +fromOptions.beforeColon;
+    } else {
+        toOptions.beforeColon = 0;
+    }
+
+    // Set value of afterColon
+    if (typeof fromOptions.afterColon !== "undefined") {
+        toOptions.afterColon = +fromOptions.afterColon;
+    } else {
+        toOptions.afterColon = 1;
+    }
+
+    // Set align if exists
+    if (typeof fromOptions.align !== "undefined") {
+        if (typeof fromOptions.align === "object") {
+            toOptions.align = fromOptions.align;
+        } else { // "string"
+            toOptions.align = {
+                on: fromOptions.align,
+                mode: toOptions.mode,
+                beforeColon: toOptions.beforeColon,
+                afterColon: toOptions.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+/**
+ * Initializes all the option values (singleLine, multiLine and align) from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptions(toOptions, fromOptions) {
+    if (typeof fromOptions.align === "object") {
+
+        // Initialize the alignment configuration
+        toOptions.align = initOptionProperty({}, fromOptions.align);
+        toOptions.align.on = fromOptions.align.on || "colon";
+        toOptions.align.mode = fromOptions.align.mode || "strict";
+
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+    } else { // string or undefined
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+        // If alignment options are defined in multiLine, pull them out into the general align configuration
+        if (toOptions.multiLine.align) {
+            toOptions.align = {
+                on: toOptions.multiLine.align.on,
+                mode: toOptions.multiLine.align.mode || toOptions.multiLine.mode,
+                beforeColon: toOptions.multiLine.align.beforeColon,
+                afterColon: toOptions.multiLine.align.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const messages = {
+    key: "{{error}} space after {{computed}}key '{{key}}'.",
+    value: "{{error}} space before value for {{computed}}key '{{key}}'."
+};
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing between keys and values in object literal properties",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [{
+            anyOf: [
+                {
+                    type: "object",
+                    properties: {
+                        align: {
+                            anyOf: [
+                                {
+                                    enum: ["colon", "value"]
+                                },
+                                {
+                                    type: "object",
+                                    properties: {
+                                        mode: {
+                                            enum: ["strict", "minimum"]
+                                        },
+                                        on: {
+                                            enum: ["colon", "value"]
+                                        },
+                                        beforeColon: {
+                                            type: "boolean"
+                                        },
+                                        afterColon: {
+                                            type: "boolean"
+                                        }
+                                    },
+                                    additionalProperties: false
+                                }
+                            ]
+                        },
+                        mode: {
+                            enum: ["strict", "minimum"]
+                        },
+                        beforeColon: {
+                            type: "boolean"
+                        },
+                        afterColon: {
+                            type: "boolean"
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                align: {
+                                    anyOf: [
+                                        {
+                                            enum: ["colon", "value"]
+                                        },
+                                        {
+                                            type: "object",
+                                            properties: {
+                                                mode: {
+                                                    enum: ["strict", "minimum"]
+                                                },
+                                                on: {
+                                                    enum: ["colon", "value"]
+                                                },
+                                                beforeColon: {
+                                                    type: "boolean"
+                                                },
+                                                afterColon: {
+                                                    type: "boolean"
+                                                }
+                                            },
+                                            additionalProperties: false
+                                        }
+                                    ]
+                                },
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        align: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                on: {
+                                    enum: ["colon", "value"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        }]
+    },
+
+    create(context) {
+
+        /**
+         * OPTIONS
+         * "key-spacing": [2, {
+         *     beforeColon: false,
+         *     afterColon: true,
+         *     align: "colon" // Optional, or "value"
+         * }
+         */
+        const options = context.options[0] || {},
+            ruleOptions = initOptions({}, options),
+            multiLineOptions = ruleOptions.multiLine,
+            singleLineOptions = ruleOptions.singleLine,
+            alignmentOptions = ruleOptions.align || null;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Determines if the given property is key-value property.
+         * @param {ASTNode} property Property node to check.
+         * @returns {boolean} Whether the property is a key-value property.
+         */
+        function isKeyValueProperty(property) {
+            return !(
+                (property.method ||
+                property.shorthand ||
+                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadProperty"
+            );
+        }
+
+        /**
+         * Starting from the given a node (a property.key node here) looks forward
+         * until it finds the last token before a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The last token before a colon punctuator.
+         */
+        function getLastTokenBeforeColon(node) {
+            const colonToken = sourceCode.getTokenAfter(node, astUtils.isColonToken);
+
+            return sourceCode.getTokenBefore(colonToken);
+        }
+
+        /**
+         * Starting from the given a node (a property.key node here) looks forward
+         * until it finds the colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The colon punctuator.
+         */
+        function getNextColon(node) {
+            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
+        }
+
+        /**
+         * Gets an object literal property's key as the identifier name or string value.
+         * @param {ASTNode} property Property node whose key to retrieve.
+         * @returns {string} The property's key.
+         */
+        function getKey(property) {
+            const key = property.key;
+
+            if (property.computed) {
+                return sourceCode.getText().slice(key.range[0], key.range[1]);
+            }
+
+            return property.key.name || property.key.value;
+        }
+
+        /**
+         * Reports an appropriately-formatted error if spacing is incorrect on one
+         * side of the colon.
+         * @param {ASTNode} property Key-value pair in an object literal.
+         * @param {string} side Side being verified - either "key" or "value".
+         * @param {string} whitespace Actual whitespace string.
+         * @param {int} expected Expected whitespace length.
+         * @param {string} mode Value of the mode as "strict" or "minimum"
+         * @returns {void}
+         */
+        function report(property, side, whitespace, expected, mode) {
+            const diff = whitespace.length - expected,
+                nextColon = getNextColon(property.key),
+                tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
+                tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
+                isKeySide = side === "key",
+                locStart = isKeySide ? tokenBeforeColon.loc.start : tokenAfterColon.loc.start,
+                isExtra = diff > 0,
+                diffAbs = Math.abs(diff),
+                spaces = Array(diffAbs + 1).join(" ");
+            let fix;
+
+            if ((
+                diff && mode === "strict" ||
+                diff < 0 && mode === "minimum" ||
+                diff > 0 && !expected && mode === "minimum") &&
+                !(expected && containsLineTerminator(whitespace))
+            ) {
+                if (isExtra) {
+                    let range;
+
+                    // Remove whitespace
+                    if (isKeySide) {
+                        range = [tokenBeforeColon.end, tokenBeforeColon.end + diffAbs];
+                    } else {
+                        range = [tokenAfterColon.start - diffAbs, tokenAfterColon.start];
+                    }
+                    fix = function(fixer) {
+                        return fixer.removeRange(range);
+                    };
+                } else {
+
+                    // Add whitespace
+                    if (isKeySide) {
+                        fix = function(fixer) {
+                            return fixer.insertTextAfter(tokenBeforeColon, spaces);
+                        };
+                    } else {
+                        fix = function(fixer) {
+                            return fixer.insertTextBefore(tokenAfterColon, spaces);
+                        };
+                    }
+                }
+
+                context.report({
+                    node: property[side],
+                    loc: locStart,
+                    message: messages[side],
+                    data: {
+                        error: isExtra ? "Extra" : "Missing",
+                        computed: property.computed ? "computed " : "",
+                        key: getKey(property)
+                    },
+                    fix
+                });
+            }
+        }
+
+        /**
+         * Gets the number of characters in a key, including quotes around string
+         * keys and braces around computed property keys.
+         * @param {ASTNode} property Property of on object literal.
+         * @returns {int} Width of the key.
+         */
+        function getKeyWidth(property) {
+            const startToken = sourceCode.getFirstToken(property);
+            const endToken = getLastTokenBeforeColon(property.key);
+
+            return endToken.range[1] - startToken.range[0];
+        }
+
+        /**
+         * Gets the whitespace around the colon in an object literal property.
+         * @param {ASTNode} property Property node from an object literal.
+         * @returns {Object} Whitespace before and after the property's colon.
+         */
+        function getPropertyWhitespace(property) {
+            const whitespace = /(\s*):(\s*)/.exec(sourceCode.getText().slice(
+                property.key.range[1], property.value.range[0]
+            ));
+
+            if (whitespace) {
+                return {
+                    beforeColon: whitespace[1],
+                    afterColon: whitespace[2]
+                };
+            }
+            return null;
+        }
+
+        /**
+         * Creates groups of properties.
+         * @param  {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {Array.<ASTNode[]>} Groups of property AST node lists.
+         */
+        function createGroups(node) {
+            if (node.properties.length === 1) {
+                return [node.properties];
+            }
+
+            return node.properties.reduce((groups, property) => {
+                const currentGroup = last(groups),
+                    prev = last(currentGroup);
+
+                if (!prev || continuesPropertyGroup(prev, property)) {
+                    currentGroup.push(property);
+                } else {
+                    groups.push([property]);
+                }
+
+                return groups;
+            }, [
+                []
+            ]);
+        }
+
+        /**
+         * Verifies correct vertical alignment of a group of properties.
+         * @param {ASTNode[]} properties List of Property AST nodes.
+         * @returns {void}
+         */
+        function verifyGroupAlignment(properties) {
+            const length = properties.length,
+                widths = properties.map(getKeyWidth), // Width of keys, including quotes
+                align = alignmentOptions.on; // "value" or "colon"
+            let targetWidth = Math.max.apply(null, widths),
+                beforeColon, afterColon, mode;
+
+            if (alignmentOptions && length > 1) { // When aligning values within a group, use the alignment configuration.
+                beforeColon = alignmentOptions.beforeColon;
+                afterColon = alignmentOptions.afterColon;
+                mode = alignmentOptions.mode;
+            } else {
+                beforeColon = multiLineOptions.beforeColon;
+                afterColon = multiLineOptions.afterColon;
+                mode = alignmentOptions.mode;
+            }
+
+            // Conditionally include one space before or after colon
+            targetWidth += (align === "colon" ? beforeColon : afterColon);
+
+            for (let i = 0; i < length; i++) {
+                const property = properties[i];
+                const whitespace = getPropertyWhitespace(property);
+
+                if (whitespace) { // Object literal getters/setters lack a colon
+                    const width = widths[i];
+
+                    if (align === "value") {
+                        report(property, "key", whitespace.beforeColon, beforeColon, mode);
+                        report(property, "value", whitespace.afterColon, targetWidth - width, mode);
+                    } else { // align = "colon"
+                        report(property, "key", whitespace.beforeColon, targetWidth - width, mode);
+                        report(property, "value", whitespace.afterColon, afterColon, mode);
+                    }
+                }
+            }
+        }
+
+        /**
+         * Verifies vertical alignment, taking into account groups of properties.
+         * @param  {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {void}
+         */
+        function verifyAlignment(node) {
+            createGroups(node).forEach(group => {
+                verifyGroupAlignment(group.filter(isKeyValueProperty));
+            });
+        }
+
+        /**
+         * Verifies spacing of property conforms to specified options.
+         * @param  {ASTNode} node Property node being evaluated.
+         * @param {Object} lineOptions Configured singleLine or multiLine options
+         * @returns {void}
+         */
+        function verifySpacing(node, lineOptions) {
+            const actual = getPropertyWhitespace(node);
+
+            if (actual) { // Object literal getters/setters lack colons
+                report(node, "key", actual.beforeColon, lineOptions.beforeColon, lineOptions.mode);
+                report(node, "value", actual.afterColon, lineOptions.afterColon, lineOptions.mode);
+            }
+        }
+
+        /**
+         * Verifies spacing of each property in a list.
+         * @param  {ASTNode[]} properties List of Property AST nodes.
+         * @returns {void}
+         */
+        function verifyListSpacing(properties) {
+            const length = properties.length;
+
+            for (let i = 0; i < length; i++) {
+                verifySpacing(properties[i], singleLineOptions);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        if (alignmentOptions) { // Verify vertical alignment
+
+            return {
+                ObjectExpression(node) {
+                    if (isSingleLine(node)) {
+                        verifyListSpacing(node.properties.filter(isKeyValueProperty));
+                    } else {
+                        verifyAlignment(node);
+                    }
+                }
+            };
+
+        }
+
+        // Obey beforeColon and afterColon in each property as configured
+        return {
+            Property(node) {
+                verifySpacing(node, isSingleLine(node.parent) ? singleLineOptions : multiLineOptions);
+            }
+        };
+
+
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/keyword-spacing.js

@@ -0,0 +1,584 @@
+/**
+ * @fileoverview Rule to enforce spacing before and after keywords.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils"),
+    keywords = require("../util/keywords");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const PREV_TOKEN = /^[)\]}>]$/;
+const NEXT_TOKEN = /^(?:[([{<~!]|\+\+?|--?)$/;
+const PREV_TOKEN_M = /^[)\]}>*]$/;
+const NEXT_TOKEN_M = /^[{*]$/;
+const TEMPLATE_OPEN_PAREN = /\$\{$/;
+const TEMPLATE_CLOSE_PAREN = /^\}/;
+const CHECK_TYPE = /^(?:JSXElement|RegularExpression|String|Template)$/;
+const KEYS = keywords.concat(["as", "async", "await", "from", "get", "let", "of", "set", "yield"]);
+
+// check duplications.
+(function() {
+    KEYS.sort();
+    for (let i = 1; i < KEYS.length; ++i) {
+        if (KEYS[i] === KEYS[i - 1]) {
+            throw new Error(`Duplication was found in the keyword list: ${KEYS[i]}`);
+        }
+    }
+}());
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given token is a "Template" token ends with "${".
+ *
+ * @param {Token} token - A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token ends with "${".
+ */
+function isOpenParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_OPEN_PAREN.test(token.value);
+}
+
+/**
+ * Checks whether or not a given token is a "Template" token starts with "}".
+ *
+ * @param {Token} token - A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token starts with "}".
+ */
+function isCloseParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_CLOSE_PAREN.test(token.value);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent spacing before and after keywords",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: { type: "boolean" },
+                    after: { type: "boolean" },
+                    overrides: {
+                        type: "object",
+                        properties: KEYS.reduce((retv, key) => {
+                            retv[key] = {
+                                type: "object",
+                                properties: {
+                                    before: { type: "boolean" },
+                                    after: { type: "boolean" }
+                                },
+                                additionalProperties: false
+                            };
+                            return retv;
+                        }, {}),
+                        additionalProperties: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports a given token if there are not space(s) before the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the previous
+         *      token to check.
+         * @returns {void}
+         */
+        function expectSpaceBefore(token, pattern) {
+            pattern = pattern || PREV_TOKEN;
+
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                !sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Expected space(s) before \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextBefore(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) before the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the previous
+         *      token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceBefore(token, pattern) {
+            pattern = pattern || PREV_TOKEN;
+
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Unexpected space(s) before \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([prevToken.range[1], token.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are not space(s) after the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the next
+         *      token to check.
+         * @returns {void}
+         */
+        function expectSpaceAfter(token, pattern) {
+            pattern = pattern || NEXT_TOKEN;
+
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                !sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Expected space(s) after \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextAfter(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) after the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the next
+         *      token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceAfter(token, pattern) {
+            pattern = pattern || NEXT_TOKEN;
+
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Unexpected space(s) after \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Parses the option object and determines check methods for each keyword.
+         *
+         * @param {Object|undefined} options - The option object to parse.
+         * @returns {Object} - Normalized option object.
+         *      Keys are keywords (there are for every keyword).
+         *      Values are instances of `{"before": function, "after": function}`.
+         */
+        function parseOptions(options) {
+            const before = !options || options.before !== false;
+            const after = !options || options.after !== false;
+            const defaultValue = {
+                before: before ? expectSpaceBefore : unexpectSpaceBefore,
+                after: after ? expectSpaceAfter : unexpectSpaceAfter
+            };
+            const overrides = (options && options.overrides) || {};
+            const retv = Object.create(null);
+
+            for (let i = 0; i < KEYS.length; ++i) {
+                const key = KEYS[i];
+                const override = overrides[key];
+
+                if (override) {
+                    const thisBefore = ("before" in override) ? override.before : before;
+                    const thisAfter = ("after" in override) ? override.after : after;
+
+                    retv[key] = {
+                        before: thisBefore ? expectSpaceBefore : unexpectSpaceBefore,
+                        after: thisAfter ? expectSpaceAfter : unexpectSpaceAfter
+                    };
+                } else {
+                    retv[key] = defaultValue;
+                }
+            }
+
+            return retv;
+        }
+
+        const checkMethodMap = parseOptions(context.options[0]);
+
+        /**
+         * Reports a given token if usage of spacing followed by the token is
+         * invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the previous
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingBefore(token, pattern) {
+            checkMethodMap[token.value].before(token, pattern);
+        }
+
+        /**
+         * Reports a given token if usage of spacing preceded by the token is
+         * invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the next
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingAfter(token, pattern) {
+            checkMethodMap[token.value].after(token, pattern);
+        }
+
+        /**
+         * Reports a given token if usage of spacing around the token is invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @returns {void}
+         */
+        function checkSpacingAround(token) {
+            checkSpacingBefore(token);
+            checkSpacingAfter(token);
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing around the token is invalid.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingAround(firstToken);
+            }
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing followed by the token is invalid.
+         *
+         * This is used for unary operators (e.g. `typeof`), `function`, and `super`.
+         * Other rules are handling usage of spacing preceded by those keywords.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingBeforeFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports the previous token of a given node if the token is a keyword and
+         * usage of spacing around the token is invalid.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundTokenBefore(node) {
+            if (node) {
+                const token = sourceCode.getTokenBefore(node, astUtils.isKeywordToken);
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `async` or `function` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForFunction(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken &&
+                ((firstToken.type === "Keyword" && firstToken.value === "function") ||
+                firstToken.value === "async")
+            ) {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports `class` and `extends` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForClass(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.superClass);
+        }
+
+        /**
+         * Reports `if` and `else` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForIfStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.alternate);
+        }
+
+        /**
+         * Reports `try`, `catch`, and `finally` keywords of a given node if usage
+         * of spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForTryStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundFirstToken(node.handler);
+            checkSpacingAroundTokenBefore(node.finalizer);
+        }
+
+        /**
+         * Reports `do` and `while` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForDoWhileStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.test);
+        }
+
+        /**
+         * Reports `for` and `in` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForInStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.right);
+        }
+
+        /**
+         * Reports `for` and `of` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForOfStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAround(sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken));
+        }
+
+        /**
+         * Reports `import`, `export`, `as`, and `from` keywords of a given node if
+         * usage of spacing around those keywords is invalid.
+         *
+         * This rule handles the `*` token in module declarations.
+         *
+         *     import*as A from "./a"; /*error Expected space(s) after "import".
+         *                               error Expected space(s) before "as".
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForModuleDeclaration(node) {
+            const firstToken = sourceCode.getFirstToken(node);
+
+            checkSpacingBefore(firstToken, PREV_TOKEN_M);
+            checkSpacingAfter(firstToken, NEXT_TOKEN_M);
+
+            if (node.source) {
+                const fromToken = sourceCode.getTokenBefore(node.source);
+
+                checkSpacingBefore(fromToken, PREV_TOKEN_M);
+                checkSpacingAfter(fromToken, NEXT_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForImportNamespaceSpecifier(node) {
+            const asToken = sourceCode.getFirstToken(node, 1);
+
+            checkSpacingBefore(asToken, PREV_TOKEN_M);
+        }
+
+        /**
+         * Reports `static`, `get`, and `set` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForProperty(node) {
+            if (node.static) {
+                checkSpacingAroundFirstToken(node);
+            }
+            if (node.kind === "get" ||
+                node.kind === "set" ||
+                (
+                    (node.method || node.type === "MethodDefinition") &&
+                    node.value.async
+                )
+            ) {
+                const token = sourceCode.getTokenBefore(
+                    node.key,
+                    tok => {
+                        switch (tok.value) {
+                            case "get":
+                            case "set":
+                            case "async":
+                                return true;
+                            default:
+                                return false;
+                        }
+                    }
+                );
+
+                if (!token) {
+                    throw new Error("Failed to find token get, set, or async beside method name");
+                }
+
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `await` keyword of a given node if usage of spacing before
+         * this keyword is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForAwaitExpression(node) {
+            checkSpacingBefore(sourceCode.getFirstToken(node));
+        }
+
+        return {
+
+            // Statements
+            DebuggerStatement: checkSpacingAroundFirstToken,
+            WithStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Control flow
+            BreakStatement: checkSpacingAroundFirstToken,
+            ContinueStatement: checkSpacingAroundFirstToken,
+            ReturnStatement: checkSpacingAroundFirstToken,
+            ThrowStatement: checkSpacingAroundFirstToken,
+            TryStatement: checkSpacingForTryStatement,
+
+            // Statements - Choice
+            IfStatement: checkSpacingForIfStatement,
+            SwitchStatement: checkSpacingAroundFirstToken,
+            SwitchCase: checkSpacingAroundFirstToken,
+
+            // Statements - Loops
+            DoWhileStatement: checkSpacingForDoWhileStatement,
+            ForInStatement: checkSpacingForForInStatement,
+            ForOfStatement: checkSpacingForForOfStatement,
+            ForStatement: checkSpacingAroundFirstToken,
+            WhileStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Declarations
+            ClassDeclaration: checkSpacingForClass,
+            ExportNamedDeclaration: checkSpacingForModuleDeclaration,
+            ExportDefaultDeclaration: checkSpacingAroundFirstToken,
+            ExportAllDeclaration: checkSpacingForModuleDeclaration,
+            FunctionDeclaration: checkSpacingForFunction,
+            ImportDeclaration: checkSpacingForModuleDeclaration,
+            VariableDeclaration: checkSpacingAroundFirstToken,
+
+            // Expressions
+            ArrowFunctionExpression: checkSpacingForFunction,
+            AwaitExpression: checkSpacingForAwaitExpression,
+            ClassExpression: checkSpacingForClass,
+            FunctionExpression: checkSpacingForFunction,
+            NewExpression: checkSpacingBeforeFirstToken,
+            Super: checkSpacingBeforeFirstToken,
+            ThisExpression: checkSpacingBeforeFirstToken,
+            UnaryExpression: checkSpacingBeforeFirstToken,
+            YieldExpression: checkSpacingBeforeFirstToken,
+
+            // Others
+            ImportNamespaceSpecifier: checkSpacingForImportNamespaceSpecifier,
+            MethodDefinition: checkSpacingForProperty,
+            Property: checkSpacingForProperty
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/line-comment-position.js

@@ -0,0 +1,111 @@
+/**
+ * @fileoverview Rule to enforce the position of line comments
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce position of line comments",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["above", "beside"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            position: {
+                                enum: ["above", "beside"]
+                            },
+                            ignorePattern: {
+                                type: "string"
+                            },
+                            applyDefaultPatterns: {
+                                type: "boolean"
+                            },
+                            applyDefaultIgnorePatterns: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0];
+
+        let above,
+            ignorePattern,
+            applyDefaultIgnorePatterns = true;
+
+        if (!options || typeof options === "string") {
+            above = !options || options === "above";
+
+        } else {
+            above = options.position === "above";
+            ignorePattern = options.ignorePattern;
+
+            if (options.hasOwnProperty("applyDefaultIgnorePatterns")) {
+                applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns !== false;
+            } else {
+                applyDefaultIgnorePatterns = options.applyDefaultPatterns !== false;
+            }
+        }
+
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const fallThroughRegExp = /^\s*falls?\s?through/;
+        const customIgnoreRegExp = new RegExp(ignorePattern);
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            LineComment(node) {
+                if (applyDefaultIgnorePatterns && (defaultIgnoreRegExp.test(node.value) || fallThroughRegExp.test(node.value))) {
+                    return;
+                }
+
+                if (ignorePattern && customIgnoreRegExp.test(node.value)) {
+                    return;
+                }
+
+                const previous = sourceCode.getTokenBefore(node, { includeComments: true });
+                const isOnSameLine = previous && previous.loc.end.line === node.loc.start.line;
+
+                if (above) {
+                    if (isOnSameLine) {
+                        context.report({
+                            node,
+                            message: "Expected comment to be above code."
+                        });
+                    }
+                } else {
+                    if (!isOnSameLine) {
+                        context.report({
+                            node,
+                            message: "Expected comment to be beside code."
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/linebreak-style.js

@@ -0,0 +1,96 @@
+/**
+ * @fileoverview Rule to enforce a single linebreak style.
+ * @author Erik Mueller
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent linebreak style",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["unix", "windows"]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const EXPECTED_LF_MSG = "Expected linebreaks to be 'LF' but found 'CRLF'.",
+            EXPECTED_CRLF_MSG = "Expected linebreaks to be 'CRLF' but found 'LF'.";
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Builds a fix function that replaces text at the specified range in the source text.
+         * @param {int[]} range The range to replace
+         * @param {string} text The text to insert.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function createFix(range, text) {
+            return function(fixer) {
+                return fixer.replaceTextRange(range, text);
+            };
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkForlinebreakStyle(node) {
+                const linebreakStyle = context.options[0] || "unix",
+                    expectedLF = linebreakStyle === "unix",
+                    expectedLFChars = expectedLF ? "\n" : "\r\n",
+                    source = sourceCode.getText(),
+                    pattern = astUtils.createGlobalLinebreakMatcher();
+                let match;
+
+                let i = 0;
+
+                while ((match = pattern.exec(source)) !== null) {
+                    i++;
+                    if (match[0] === expectedLFChars) {
+                        continue;
+                    }
+
+                    const index = match.index;
+                    const range = [index, index + match[0].length];
+
+                    context.report({
+                        node,
+                        loc: {
+                            line: i,
+                            column: sourceCode.lines[i - 1].length
+                        },
+                        message: expectedLF ? EXPECTED_LF_MSG : EXPECTED_CRLF_MSG,
+                        fix: createFix(range, expectedLFChars)
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/lines-around-comment.js

@@ -0,0 +1,380 @@
+/**
+ * @fileoverview Enforces empty lines around comments.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash"),
+    astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Return an array with with any line numbers that are empty.
+ * @param {Array} lines An array of each line of the file.
+ * @returns {Array} An array of line numbers.
+ */
+function getEmptyLineNums(lines) {
+    const emptyLines = lines.map((line, i) => ({
+        code: line.trim(),
+        num: i + 1
+    })).filter(line => !line.code).map(line => line.num);
+
+    return emptyLines;
+}
+
+/**
+ * Return an array with with any line numbers that contain comments.
+ * @param {Array} comments An array of comment nodes.
+ * @returns {Array} An array of line numbers.
+ */
+function getCommentLineNums(comments) {
+    const lines = [];
+
+    comments.forEach(token => {
+        const start = token.loc.start.line;
+        const end = token.loc.end.line;
+
+        lines.push(start, end);
+    });
+    return lines;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require empty lines around comments",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    beforeBlockComment: {
+                        type: "boolean"
+                    },
+                    afterBlockComment: {
+                        type: "boolean"
+                    },
+                    beforeLineComment: {
+                        type: "boolean"
+                    },
+                    afterLineComment: {
+                        type: "boolean"
+                    },
+                    allowBlockStart: {
+                        type: "boolean"
+                    },
+                    allowBlockEnd: {
+                        type: "boolean"
+                    },
+                    allowObjectStart: {
+                        type: "boolean"
+                    },
+                    allowObjectEnd: {
+                        type: "boolean"
+                    },
+                    allowArrayStart: {
+                        type: "boolean"
+                    },
+                    allowArrayEnd: {
+                        type: "boolean"
+                    },
+                    ignorePattern: {
+                        type: "string"
+                    },
+                    applyDefaultIgnorePatterns: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const options = context.options[0] ? Object.assign({}, context.options[0]) : {};
+        const ignorePattern = options.ignorePattern;
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const customIgnoreRegExp = new RegExp(ignorePattern);
+        const applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns !== false;
+
+
+        options.beforeLineComment = options.beforeLineComment || false;
+        options.afterLineComment = options.afterLineComment || false;
+        options.beforeBlockComment = typeof options.beforeBlockComment !== "undefined" ? options.beforeBlockComment : true;
+        options.afterBlockComment = options.afterBlockComment || false;
+        options.allowBlockStart = options.allowBlockStart || false;
+        options.allowBlockEnd = options.allowBlockEnd || false;
+
+        const sourceCode = context.getSourceCode();
+
+        const lines = sourceCode.lines,
+            numLines = lines.length + 1,
+            comments = sourceCode.getAllComments(),
+            commentLines = getCommentLineNums(comments),
+            emptyLines = getEmptyLineNums(lines),
+            commentAndEmptyLines = commentLines.concat(emptyLines);
+
+        /**
+         * Returns whether or not a token is a comment node type
+         * @param {Token} token The token to check
+         * @returns {boolean} True if the token is a comment node
+         */
+        function isCommentNodeType(token) {
+            return token && (token.type === "Block" || token.type === "Line");
+        }
+
+        /**
+         * Returns whether or not comments are on lines starting with or ending with code
+         * @param {ASTNode} node The comment node to check.
+         * @returns {boolean} True if the comment is not alone.
+         */
+        function codeAroundComment(node) {
+            let token;
+
+            token = node;
+            do {
+                token = sourceCode.getTokenBefore(token, { includeComments: true });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(token, node)) {
+                return true;
+            }
+
+            token = node;
+            do {
+                token = sourceCode.getTokenAfter(token, { includeComments: true });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(node, token)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Returns whether or not comments are inside a node type or not.
+         * @param {ASTNode} node The Comment node.
+         * @param {ASTNode} parent The Comment parent node.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is inside nodeType.
+         */
+        function isCommentInsideNodeType(node, parent, nodeType) {
+            return parent.type === nodeType ||
+                (parent.body && parent.body.type === nodeType) ||
+                (parent.consequent && parent.consequent.type === nodeType);
+        }
+
+        /**
+         * Returns whether or not comments are at the parent start or not.
+         * @param {ASTNode} node The Comment node.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent start.
+         */
+        function isCommentAtParentStart(node, nodeType) {
+            const ancestors = context.getAncestors();
+            let parent;
+
+            if (ancestors.length) {
+                parent = ancestors.pop();
+            }
+
+            return parent && isCommentInsideNodeType(node, parent, nodeType) &&
+                    node.loc.start.line - parent.loc.start.line === 1;
+        }
+
+        /**
+         * Returns whether or not comments are at the parent end or not.
+         * @param {ASTNode} node The Comment node.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent end.
+         */
+        function isCommentAtParentEnd(node, nodeType) {
+            const ancestors = context.getAncestors();
+            let parent;
+
+            if (ancestors.length) {
+                parent = ancestors.pop();
+            }
+
+            return parent && isCommentInsideNodeType(node, parent, nodeType) &&
+                    parent.loc.end.line - node.loc.end.line === 1;
+        }
+
+        /**
+         * Returns whether or not comments are at the block start or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at block start.
+         */
+        function isCommentAtBlockStart(node) {
+            return isCommentAtParentStart(node, "ClassBody") || isCommentAtParentStart(node, "BlockStatement") || isCommentAtParentStart(node, "SwitchCase");
+        }
+
+        /**
+         * Returns whether or not comments are at the block end or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at block end.
+         */
+        function isCommentAtBlockEnd(node) {
+            return isCommentAtParentEnd(node, "ClassBody") || isCommentAtParentEnd(node, "BlockStatement") || isCommentAtParentEnd(node, "SwitchCase") || isCommentAtParentEnd(node, "SwitchStatement");
+        }
+
+        /**
+         * Returns whether or not comments are at the object start or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at object start.
+         */
+        function isCommentAtObjectStart(node) {
+            return isCommentAtParentStart(node, "ObjectExpression") || isCommentAtParentStart(node, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the object end or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at object end.
+         */
+        function isCommentAtObjectEnd(node) {
+            return isCommentAtParentEnd(node, "ObjectExpression") || isCommentAtParentEnd(node, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array start or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at array start.
+         */
+        function isCommentAtArrayStart(node) {
+            return isCommentAtParentStart(node, "ArrayExpression") || isCommentAtParentStart(node, "ArrayPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array end or not.
+         * @param {ASTNode} node The Comment node.
+         * @returns {boolean} True if the comment is at array end.
+         */
+        function isCommentAtArrayEnd(node) {
+            return isCommentAtParentEnd(node, "ArrayExpression") || isCommentAtParentEnd(node, "ArrayPattern");
+        }
+
+        /**
+         * Checks if a comment node has lines around it (ignores inline comments)
+         * @param {ASTNode} node The Comment node.
+         * @param {Object} opts Options to determine the newline.
+         * @param {boolean} opts.after Should have a newline after this line.
+         * @param {boolean} opts.before Should have a newline before this line.
+         * @returns {void}
+         */
+        function checkForEmptyLine(node, opts) {
+            if (applyDefaultIgnorePatterns && defaultIgnoreRegExp.test(node.value)) {
+                return;
+            }
+
+            if (ignorePattern && customIgnoreRegExp.test(node.value)) {
+                return;
+            }
+
+            let after = opts.after,
+                before = opts.before;
+
+            const prevLineNum = node.loc.start.line - 1,
+                nextLineNum = node.loc.end.line + 1,
+                commentIsNotAlone = codeAroundComment(node);
+
+            const blockStartAllowed = options.allowBlockStart && isCommentAtBlockStart(node),
+                blockEndAllowed = options.allowBlockEnd && isCommentAtBlockEnd(node),
+                objectStartAllowed = options.allowObjectStart && isCommentAtObjectStart(node),
+                objectEndAllowed = options.allowObjectEnd && isCommentAtObjectEnd(node),
+                arrayStartAllowed = options.allowArrayStart && isCommentAtArrayStart(node),
+                arrayEndAllowed = options.allowArrayEnd && isCommentAtArrayEnd(node);
+
+            const exceptionStartAllowed = blockStartAllowed || objectStartAllowed || arrayStartAllowed;
+            const exceptionEndAllowed = blockEndAllowed || objectEndAllowed || arrayEndAllowed;
+
+            // ignore top of the file and bottom of the file
+            if (prevLineNum < 1) {
+                before = false;
+            }
+            if (nextLineNum >= numLines) {
+                after = false;
+            }
+
+            // we ignore all inline comments
+            if (commentIsNotAlone) {
+                return;
+            }
+
+            const previousTokenOrComment = sourceCode.getTokenBefore(node, { includeComments: true });
+            const nextTokenOrComment = sourceCode.getTokenAfter(node, { includeComments: true });
+
+            // check for newline before
+            if (!exceptionStartAllowed && before && !lodash.includes(commentAndEmptyLines, prevLineNum) &&
+                    !(isCommentNodeType(previousTokenOrComment) && astUtils.isTokenOnSameLine(previousTokenOrComment, node))) {
+                const lineStart = node.range[0] - node.loc.start.column;
+                const range = [lineStart, lineStart];
+
+                context.report({
+                    node,
+                    message: "Expected line before comment.",
+                    fix(fixer) {
+                        return fixer.insertTextBeforeRange(range, "\n");
+                    }
+                });
+            }
+
+            // check for newline after
+            if (!exceptionEndAllowed && after && !lodash.includes(commentAndEmptyLines, nextLineNum) &&
+                    !(isCommentNodeType(nextTokenOrComment) && astUtils.isTokenOnSameLine(node, nextTokenOrComment))) {
+                context.report({
+                    node,
+                    message: "Expected line after comment.",
+                    fix(fixer) {
+                        return fixer.insertTextAfter(node, "\n");
+                    }
+                });
+            }
+
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            LineComment(node) {
+                if (options.beforeLineComment || options.afterLineComment) {
+                    checkForEmptyLine(node, {
+                        after: options.afterLineComment,
+                        before: options.beforeLineComment
+                    });
+                }
+            },
+
+            BlockComment(node) {
+                if (options.beforeBlockComment || options.afterBlockComment) {
+                    checkForEmptyLine(node, {
+                        after: options.afterBlockComment,
+                        before: options.beforeBlockComment
+                    });
+                }
+            }
+
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/lines-around-directive.js

@@ -0,0 +1,191 @@
+/**
+ * @fileoverview Require or disallow newlines around directives.
+ * @author Kai Cataldo
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow newlines around directives",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        schema: [{
+            oneOf: [
+                {
+                    enum: ["always", "never"]
+                },
+                {
+                    type: "object",
+                    properties: {
+                        before: {
+                            enum: ["always", "never"]
+                        },
+                        after: {
+                            enum: ["always", "never"]
+                        }
+                    },
+                    additionalProperties: false,
+                    minProperties: 2
+                }
+            ]
+        }],
+        fixable: "whitespace"
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const config = context.options[0] || "always";
+        const expectLineBefore = typeof config === "string" ? config : config.before;
+        const expectLineAfter = typeof config === "string" ? config : config.after;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if node is preceded by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is preceded by a blank newline.
+         */
+        function hasNewlineBefore(node) {
+            const tokenBefore = sourceCode.getTokenBefore(node, { includeComments: true });
+            const tokenLineBefore = tokenBefore ? tokenBefore.loc.end.line : 0;
+
+            return node.loc.start.line - tokenLineBefore >= 2;
+        }
+
+        /**
+        * Gets the last token of a node that is on the same line as the rest of the node.
+        * This will usually be the last token of the node, but it will be the second-to-last token if the node has a trailing
+        * semicolon on a different line.
+        * @param {ASTNode} node A directive node
+        * @returns {Token} The last token of the node on the line
+        */
+        function getLastTokenOnLine(node) {
+            const lastToken = sourceCode.getLastToken(node);
+            const secondToLastToken = sourceCode.getTokenBefore(lastToken);
+
+            return astUtils.isSemicolonToken(lastToken) && lastToken.loc.start.line > secondToLastToken.loc.end.line
+                ? secondToLastToken
+                : lastToken;
+        }
+
+        /**
+         * Check if node is followed by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is followed by a blank newline.
+         */
+        function hasNewlineAfter(node) {
+            const lastToken = getLastTokenOnLine(node);
+            const tokenAfter = sourceCode.getTokenAfter(lastToken, { includeComments: true });
+
+            return tokenAfter.loc.start.line - lastToken.loc.end.line >= 2;
+        }
+
+        /**
+         * Report errors for newlines around directives.
+         * @param {ASTNode} node Node to check.
+         * @param {string} location Whether the error was found before or after the directive.
+         * @param {boolean} expected Whether or not a newline was expected or unexpected.
+         * @returns {void}
+         */
+        function reportError(node, location, expected) {
+            context.report({
+                node,
+                message: "{{expected}} newline {{location}} \"{{value}}\" directive.",
+                data: {
+                    expected: expected ? "Expected" : "Unexpected",
+                    value: node.expression.value,
+                    location
+                },
+                fix(fixer) {
+                    const lastToken = getLastTokenOnLine(node);
+
+                    if (expected) {
+                        return location === "before" ? fixer.insertTextBefore(node, "\n") : fixer.insertTextAfter(lastToken, "\n");
+                    }
+                    return fixer.removeRange(location === "before" ? [node.range[0] - 1, node.range[0]] : [lastToken.range[1], lastToken.range[1] + 1]);
+                }
+            });
+        }
+
+        /**
+         * Check lines around directives in node
+         * @param {ASTNode} node - node to check
+         * @returns {void}
+         */
+        function checkDirectives(node) {
+            const directives = astUtils.getDirectivePrologue(node);
+
+            if (!directives.length) {
+                return;
+            }
+
+            const firstDirective = directives[0];
+            const hasTokenOrCommentBefore = !!sourceCode.getTokenBefore(firstDirective, { includeComments: true });
+
+            // Only check before the first directive if it is preceded by a comment or if it is at the top of
+            // the file and expectLineBefore is set to "never". This is to not force a newline at the top of
+            // the file if there are no comments as well as for compatibility with padded-blocks.
+            if (
+                firstDirective.leadingComments && firstDirective.leadingComments.length ||
+
+                // Shebangs are not added to leading comments but are accounted for by the following.
+                node.type === "Program" && hasTokenOrCommentBefore
+            ) {
+                if (expectLineBefore === "always" && !hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", true);
+                }
+
+                if (expectLineBefore === "never" && hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", false);
+                }
+            } else if (
+                node.type === "Program" &&
+                expectLineBefore === "never" &&
+                !hasTokenOrCommentBefore &&
+                hasNewlineBefore(firstDirective)
+            ) {
+                reportError(firstDirective, "before", false);
+            }
+
+            const lastDirective = directives[directives.length - 1];
+            const statements = node.type === "Program" ? node.body : node.body.body;
+
+            // Do not check after the last directive if the body only
+            // contains a directive prologue and isn't followed by a comment to ensure
+            // this rule behaves well with padded-blocks.
+            if (lastDirective === statements[statements.length - 1] && !lastDirective.trailingComments) {
+                return;
+            }
+
+            if (expectLineAfter === "always" && !hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", true);
+            }
+
+            if (expectLineAfter === "never" && hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", false);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkDirectives,
+            FunctionDeclaration: checkDirectives,
+            FunctionExpression: checkDirectives,
+            ArrowFunctionExpression: checkDirectives
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-depth.js

@@ -0,0 +1,148 @@
+/**
+ * @fileoverview A rule to set the maximum depth block can be nested in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum depth that blocks can be nested",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0];
+        let maxDepth = 4;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            maxDepth = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            maxDepth = option.max;
+        }
+        if (typeof option === "number") {
+            maxDepth = option;
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * When parsing is done then pop out the reference
+         * @returns {void}
+         * @private
+         */
+        function endFunction() {
+            functionStack.pop();
+        }
+
+        /**
+         * Save the block and Evaluate the node
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function pushBlock(node) {
+            const len = ++functionStack[functionStack.length - 1];
+
+            if (len > maxDepth) {
+                context.report({ node, message: "Blocks are nested too deeply ({{depth}}).", data: { depth: len } });
+            }
+        }
+
+        /**
+         * Pop the saved block
+         * @returns {void}
+         * @private
+         */
+        function popBlock() {
+            functionStack[functionStack.length - 1]--;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: startFunction,
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+
+            IfStatement(node) {
+                if (node.parent.type !== "IfStatement") {
+                    pushBlock(node);
+                }
+            },
+            SwitchStatement: pushBlock,
+            TryStatement: pushBlock,
+            DoWhileStatement: pushBlock,
+            WhileStatement: pushBlock,
+            WithStatement: pushBlock,
+            ForStatement: pushBlock,
+            ForInStatement: pushBlock,
+            ForOfStatement: pushBlock,
+
+            "IfStatement:exit": popBlock,
+            "SwitchStatement:exit": popBlock,
+            "TryStatement:exit": popBlock,
+            "DoWhileStatement:exit": popBlock,
+            "WhileStatement:exit": popBlock,
+            "WithStatement:exit": popBlock,
+            "ForStatement:exit": popBlock,
+            "ForInStatement:exit": popBlock,
+            "ForOfStatement:exit": popBlock,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+            "Program:exit": endFunction
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-len.js

@@ -0,0 +1,363 @@
+/**
+ * @fileoverview Rule to check for max length on a line.
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const OPTIONS_SCHEMA = {
+    type: "object",
+    properties: {
+        code: {
+            type: "integer",
+            minimum: 0
+        },
+        comments: {
+            type: "integer",
+            minimum: 0
+        },
+        tabWidth: {
+            type: "integer",
+            minimum: 0
+        },
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreComments: {
+            type: "boolean"
+        },
+        ignoreStrings: {
+            type: "boolean"
+        },
+        ignoreUrls: {
+            type: "boolean"
+        },
+        ignoreTemplateLiterals: {
+            type: "boolean"
+        },
+        ignoreRegExpLiterals: {
+            type: "boolean"
+        },
+        ignoreTrailingComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+const OPTIONS_OR_INTEGER_SCHEMA = {
+    anyOf: [
+        OPTIONS_SCHEMA,
+        {
+            type: "integer",
+            minimum: 0
+        }
+    ]
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum line length",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_SCHEMA
+        ]
+    },
+
+    create(context) {
+
+        /*
+         * Inspired by http://tools.ietf.org/html/rfc3986#appendix-B, however:
+         * - They're matching an entire string that we know is a URI
+         * - We're matching part of a string where we think there *might* be a URL
+         * - We're only concerned about URLs, as picking out any URI would cause
+         *   too many false positives
+         * - We don't care about matching the entire URL, any small segment is fine
+         */
+        const URL_REGEXP = /[^:/?#]:\/\/[^?#]/;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Computes the length of a line that may contain tabs. The width of each
+         * tab will be the number of spaces to the next tab stop.
+         * @param {string} line The line.
+         * @param {int} tabWidth The width of each tab stop in spaces.
+         * @returns {int} The computed line length.
+         * @private
+         */
+        function computeLineLength(line, tabWidth) {
+            let extraCharacterCount = 0;
+
+            line.replace(/\t/g, (match, offset) => {
+                const totalOffset = offset + extraCharacterCount,
+                    previousTabStopOffset = tabWidth ? totalOffset % tabWidth : 0,
+                    spaceCount = tabWidth - previousTabStopOffset;
+
+                extraCharacterCount += spaceCount - 1;  // -1 for the replaced tab
+            });
+            return Array.from(line).length + extraCharacterCount;
+        }
+
+        // The options object must be the last option specified…
+        const lastOption = context.options[context.options.length - 1];
+        const options = typeof lastOption === "object" ? Object.create(lastOption) : {};
+
+        // …but max code length…
+        if (typeof context.options[0] === "number") {
+            options.code = context.options[0];
+        }
+
+        // …and tabWidth can be optionally specified directly as integers.
+        if (typeof context.options[1] === "number") {
+            options.tabWidth = context.options[1];
+        }
+
+        const maxLength = options.code || 80,
+            tabWidth = options.tabWidth || 4,
+            ignoreComments = options.ignoreComments || false,
+            ignoreStrings = options.ignoreStrings || false,
+            ignoreTemplateLiterals = options.ignoreTemplateLiterals || false,
+            ignoreRegExpLiterals = options.ignoreRegExpLiterals || false,
+            ignoreTrailingComments = options.ignoreTrailingComments || options.ignoreComments || false,
+            ignoreUrls = options.ignoreUrls || false,
+            maxCommentLength = options.comments;
+        let ignorePattern = options.ignorePattern || null;
+
+        if (ignorePattern) {
+            ignorePattern = new RegExp(ignorePattern);
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tells if a given comment is trailing: it starts on the current line and
+         * extends to or past the end of the current line.
+         * @param {string} line The source line we want to check for a trailing comment on
+         * @param {number} lineNumber The one-indexed line number for line
+         * @param {ASTNode} comment The comment to inspect
+         * @returns {boolean} If the comment is trailing on the given line
+         */
+        function isTrailingComment(line, lineNumber, comment) {
+            return comment &&
+                (comment.loc.start.line === lineNumber && lineNumber <= comment.loc.end.line) &&
+                (comment.loc.end.line > lineNumber || comment.loc.end.column === line.length);
+        }
+
+        /**
+         * Tells if a comment encompasses the entire line.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {boolean} If the comment covers the entire line
+         */
+        function isFullLineComment(line, lineNumber, comment) {
+            const start = comment.loc.start,
+                end = comment.loc.end,
+                isFirstTokenOnLine = !line.slice(0, comment.loc.start.column).trim();
+
+            return comment &&
+                (start.line < lineNumber || (start.line === lineNumber && isFirstTokenOnLine)) &&
+                (end.line > lineNumber || (end.line === lineNumber && end.column === line.length));
+        }
+
+        /**
+         * Gets the line after the comment and any remaining trailing whitespace is
+         * stripped.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {string} Line without comment and trailing whitepace
+         */
+        function stripTrailingComment(line, lineNumber, comment) {
+
+            // loc.column is zero-indexed
+            return line.slice(0, comment.loc.start.column).replace(/\s+$/, "");
+        }
+
+        /**
+         * Ensure that an array exists at [key] on `object`, and add `value` to it.
+         *
+         * @param {Object} object the object to mutate
+         * @param {string} key the object's key
+         * @param {*} value the value to add
+         * @returns {void}
+         * @private
+         */
+        function ensureArrayAndPush(object, key, value) {
+            if (!Array.isArray(object[key])) {
+                object[key] = [];
+            }
+            object[key].push(value);
+        }
+
+        /**
+         * Retrieves an array containing all strings (" or ') in the source code.
+         *
+         * @returns {ASTNode[]} An array of string nodes.
+         */
+        function getAllStrings() {
+            return sourceCode.ast.tokens.filter(token => token.type === "String");
+        }
+
+        /**
+         * Retrieves an array containing all template literals in the source code.
+         *
+         * @returns {ASTNode[]} An array of template literal nodes.
+         */
+        function getAllTemplateLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "Template");
+        }
+
+
+        /**
+         * Retrieves an array containing all RegExp literals in the source code.
+         *
+         * @returns {ASTNode[]} An array of RegExp literal nodes.
+         */
+        function getAllRegExpLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "RegularExpression");
+        }
+
+
+        /**
+         * A reducer to group an AST node by line number, both start and end.
+         *
+         * @param {Object} acc the accumulator
+         * @param {ASTNode} node the AST node in question
+         * @returns {Object} the modified accumulator
+         * @private
+         */
+        function groupByLineNumber(acc, node) {
+            for (let i = node.loc.start.line; i <= node.loc.end.line; ++i) {
+                ensureArrayAndPush(acc, i, node);
+            }
+            return acc;
+        }
+
+        /**
+         * Check the program for max length
+         * @param {ASTNode} node Node to examine
+         * @returns {void}
+         * @private
+         */
+        function checkProgramForMaxLength(node) {
+
+            // split (honors line-ending)
+            const lines = sourceCode.lines,
+
+                // list of comments to ignore
+                comments = ignoreComments || maxCommentLength || ignoreTrailingComments ? sourceCode.getAllComments() : [];
+
+                // we iterate over comments in parallel with the lines
+            let commentsIndex = 0;
+
+            const strings = getAllStrings(sourceCode);
+            const stringsByLine = strings.reduce(groupByLineNumber, {});
+
+            const templateLiterals = getAllTemplateLiterals(sourceCode);
+            const templateLiteralsByLine = templateLiterals.reduce(groupByLineNumber, {});
+
+            const regExpLiterals = getAllRegExpLiterals(sourceCode);
+            const regExpLiteralsByLine = regExpLiterals.reduce(groupByLineNumber, {});
+
+            lines.forEach((line, i) => {
+
+                // i is zero-indexed, line numbers are one-indexed
+                const lineNumber = i + 1;
+
+                /*
+                 * if we're checking comment length; we need to know whether this
+                 * line is a comment
+                 */
+                let lineIsComment = false;
+
+                /*
+                 * We can short-circuit the comment checks if we're already out of
+                 * comments to check.
+                 */
+                if (commentsIndex < comments.length) {
+                    let comment = null;
+
+                    // iterate over comments until we find one past the current line
+                    do {
+                        comment = comments[++commentsIndex];
+                    } while (comment && comment.loc.start.line <= lineNumber);
+
+                    // and step back by one
+                    comment = comments[--commentsIndex];
+
+                    if (isFullLineComment(line, lineNumber, comment)) {
+                        lineIsComment = true;
+                    } else if (ignoreTrailingComments && isTrailingComment(line, lineNumber, comment)) {
+                        line = stripTrailingComment(line, lineNumber, comment);
+                    }
+                }
+                if (ignorePattern && ignorePattern.test(line) ||
+                    ignoreUrls && URL_REGEXP.test(line) ||
+                    ignoreStrings && stringsByLine[lineNumber] ||
+                    ignoreTemplateLiterals && templateLiteralsByLine[lineNumber] ||
+                    ignoreRegExpLiterals && regExpLiteralsByLine[lineNumber]
+                ) {
+
+                    // ignore this line
+                    return;
+                }
+
+                const lineLength = computeLineLength(line, tabWidth);
+
+                if (lineIsComment && ignoreComments) {
+                    return;
+                }
+
+                if (lineIsComment && lineLength > maxCommentLength) {
+                    context.report({
+                        node,
+                        loc: { line: lineNumber, column: 0 },
+                        message: "Line {{lineNumber}} exceeds the maximum comment line length of {{maxCommentLength}}.",
+                        data: {
+                            lineNumber: i + 1,
+                            maxCommentLength
+                        }
+                    });
+                } else if (lineLength > maxLength) {
+                    context.report({
+                        node,
+                        loc: { line: lineNumber, column: 0 },
+                        message: "Line {{lineNumber}} exceeds the maximum line length of {{maxLength}}.",
+                        data: {
+                            lineNumber: i + 1,
+                            maxLength
+                        }
+                    });
+                }
+            });
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkProgramForMaxLength
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-lines.js

@@ -0,0 +1,144 @@
+/**
+ * @fileoverview enforce a maximum file length
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum number of lines per file",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            skipComments: {
+                                type: "boolean"
+                            },
+                            skipBlankLines: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const option = context.options[0];
+        let max = 300;
+
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            max = option.max;
+        }
+
+        if (typeof option === "number") {
+            max = option;
+        }
+
+        const skipComments = option && option.skipComments;
+        const skipBlankLines = option && option.skipBlankLines;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Returns whether or not a token is a comment node type
+         * @param {Token} token The token to check
+         * @returns {boolean} True if the token is a comment node
+         */
+        function isCommentNodeType(token) {
+            return token && (token.type === "Block" || token.type === "Line");
+        }
+
+        /**
+         * Returns the line numbers of a comment that don't have any code on the same line
+         * @param {Node} comment The comment node to check
+         * @returns {int[]} The line numbers
+         */
+        function getLinesWithoutCode(comment) {
+            let start = comment.loc.start.line;
+            let end = comment.loc.end.line;
+
+            let token;
+
+            token = comment;
+            do {
+                token = sourceCode.getTokenBefore(token, { includeComments: true });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(token, comment)) {
+                start += 1;
+            }
+
+            token = comment;
+            do {
+                token = sourceCode.getTokenAfter(token, { includeComments: true });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(comment, token)) {
+                end -= 1;
+            }
+
+            if (start <= end) {
+                return lodash.range(start, end + 1);
+            }
+            return [];
+        }
+
+        return {
+            "Program:exit"() {
+                let lines = sourceCode.lines.map((text, i) => ({ lineNumber: i + 1, text }));
+
+                if (skipBlankLines) {
+                    lines = lines.filter(l => l.text.trim() !== "");
+                }
+
+                if (skipComments) {
+                    const comments = sourceCode.getAllComments();
+
+                    const commentLines = lodash.flatten(comments.map(comment => getLinesWithoutCode(comment)));
+
+                    lines = lines.filter(l => !lodash.includes(commentLines, l.lineNumber));
+                }
+
+                if (lines.length > max) {
+                    context.report({
+                        loc: { line: 1, column: 0 },
+                        message: "File must be at most {{max}} lines long. It's {{actual}} lines long.",
+                        data: {
+                            max,
+                            actual: lines.length
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-nested-callbacks.js

@@ -0,0 +1,112 @@
+/**
+ * @fileoverview Rule to enforce a maximum number of nested callbacks.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum depth that callbacks can be nested",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Constants
+        //--------------------------------------------------------------------------
+        const option = context.options[0];
+        let THRESHOLD = 10;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            THRESHOLD = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            THRESHOLD = option.max;
+        }
+        if (typeof option === "number") {
+            THRESHOLD = option;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const callbackStack = [];
+
+        /**
+         * Checks a given function node for too many callbacks.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkFunction(node) {
+            const parent = node.parent;
+
+            if (parent.type === "CallExpression") {
+                callbackStack.push(node);
+            }
+
+            if (callbackStack.length > THRESHOLD) {
+                const opts = { num: callbackStack.length, max: THRESHOLD };
+
+                context.report({ node, message: "Too many nested callbacks ({{num}}). Maximum allowed is {{max}}.", data: opts });
+            }
+        }
+
+        /**
+         * Pops the call stack.
+         * @returns {void}
+         * @private
+         */
+        function popStack() {
+            callbackStack.pop();
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrowFunctionExpression: checkFunction,
+            "ArrowFunctionExpression:exit": popStack,
+
+            FunctionExpression: checkFunction,
+            "FunctionExpression:exit": popStack
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-params.js

@@ -0,0 +1,96 @@
+/**
+ * @fileoverview Rule to flag when a function has too many parameters
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum number of parameters in function definitions",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const option = context.options[0];
+        let numParams = 3;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            numParams = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            numParams = option.max;
+        }
+        if (typeof option === "number") {
+            numParams = option;
+        }
+
+        /**
+         * Checks a function to see if it has too many parameters.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkFunction(node) {
+            if (node.params.length > numParams) {
+                context.report({
+                    node,
+                    message: "{{name}} has too many parameters ({{count}}). Maximum allowed is {{max}}.",
+                    data: {
+                        name: lodash.upperFirst(astUtils.getFunctionNameWithKind(node)),
+                        count: node.params.length,
+                        max: numParams
+                    }
+                });
+            }
+        }
+
+        return {
+            FunctionDeclaration: checkFunction,
+            ArrowFunctionExpression: checkFunction,
+            FunctionExpression: checkFunction
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-statements-per-line.js

@@ -0,0 +1,192 @@
+/**
+ * @fileoverview Specify the maximum number of statements allowed per line.
+ * @author Kenneth Williams
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum number of statements allowed per line",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    max: {
+                        type: "integer",
+                        minimum: 1
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const sourceCode = context.getSourceCode(),
+            options = context.options[0] || {},
+            maxStatementsPerLine = typeof options.max !== "undefined" ? options.max : 1,
+            message = "This line has {{numberOfStatementsOnThisLine}} {{statements}}. Maximum allowed is {{maxStatementsPerLine}}.";
+
+        let lastStatementLine = 0,
+            numberOfStatementsOnThisLine = 0,
+            firstExtraStatement;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const SINGLE_CHILD_ALLOWED = /^(?:(?:DoWhile|For|ForIn|ForOf|If|Labeled|While)Statement|Export(?:Default|Named)Declaration)$/;
+
+        /**
+         * Reports with the first extra statement, and clears it.
+         *
+         * @returns {void}
+         */
+        function reportFirstExtraStatementAndClear() {
+            if (firstExtraStatement) {
+                context.report({
+                    node: firstExtraStatement,
+                    message,
+                    data: {
+                        numberOfStatementsOnThisLine,
+                        maxStatementsPerLine,
+                        statements: numberOfStatementsOnThisLine === 1 ? "statement" : "statements"
+                    }
+                });
+            }
+            firstExtraStatement = null;
+        }
+
+        /**
+         * Gets the actual last token of a given node.
+         *
+         * @param {ASTNode} node - A node to get. This is a node except EmptyStatement.
+         * @returns {Token} The actual last token.
+         */
+        function getActualLastToken(node) {
+            return sourceCode.getLastToken(node, astUtils.isNotSemicolonToken);
+        }
+
+        /**
+         * Addresses a given node.
+         * It updates the state of this rule, then reports the node if the node violated this rule.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {void}
+         */
+        function enterStatement(node) {
+            const line = node.loc.start.line;
+
+            // Skip to allow non-block statements if this is direct child of control statements.
+            // `if (a) foo();` is counted as 1.
+            // But `if (a) foo(); else foo();` should be counted as 2.
+            if (SINGLE_CHILD_ALLOWED.test(node.parent.type) &&
+                node.parent.alternate !== node
+            ) {
+                return;
+            }
+
+            // Update state.
+            if (line === lastStatementLine) {
+                numberOfStatementsOnThisLine += 1;
+            } else {
+                reportFirstExtraStatementAndClear();
+                numberOfStatementsOnThisLine = 1;
+                lastStatementLine = line;
+            }
+
+            // Reports if the node violated this rule.
+            if (numberOfStatementsOnThisLine === maxStatementsPerLine + 1) {
+                firstExtraStatement = firstExtraStatement || node;
+            }
+        }
+
+        /**
+         * Updates the state of this rule with the end line of leaving node to check with the next statement.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {void}
+         */
+        function leaveStatement(node) {
+            const line = getActualLastToken(node).loc.end.line;
+
+            // Update state.
+            if (line !== lastStatementLine) {
+                reportFirstExtraStatementAndClear();
+                numberOfStatementsOnThisLine = 1;
+                lastStatementLine = line;
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            BreakStatement: enterStatement,
+            ClassDeclaration: enterStatement,
+            ContinueStatement: enterStatement,
+            DebuggerStatement: enterStatement,
+            DoWhileStatement: enterStatement,
+            ExpressionStatement: enterStatement,
+            ForInStatement: enterStatement,
+            ForOfStatement: enterStatement,
+            ForStatement: enterStatement,
+            FunctionDeclaration: enterStatement,
+            IfStatement: enterStatement,
+            ImportDeclaration: enterStatement,
+            LabeledStatement: enterStatement,
+            ReturnStatement: enterStatement,
+            SwitchStatement: enterStatement,
+            ThrowStatement: enterStatement,
+            TryStatement: enterStatement,
+            VariableDeclaration: enterStatement,
+            WhileStatement: enterStatement,
+            WithStatement: enterStatement,
+            ExportNamedDeclaration: enterStatement,
+            ExportDefaultDeclaration: enterStatement,
+            ExportAllDeclaration: enterStatement,
+
+            "BreakStatement:exit": leaveStatement,
+            "ClassDeclaration:exit": leaveStatement,
+            "ContinueStatement:exit": leaveStatement,
+            "DebuggerStatement:exit": leaveStatement,
+            "DoWhileStatement:exit": leaveStatement,
+            "ExpressionStatement:exit": leaveStatement,
+            "ForInStatement:exit": leaveStatement,
+            "ForOfStatement:exit": leaveStatement,
+            "ForStatement:exit": leaveStatement,
+            "FunctionDeclaration:exit": leaveStatement,
+            "IfStatement:exit": leaveStatement,
+            "ImportDeclaration:exit": leaveStatement,
+            "LabeledStatement:exit": leaveStatement,
+            "ReturnStatement:exit": leaveStatement,
+            "SwitchStatement:exit": leaveStatement,
+            "ThrowStatement:exit": leaveStatement,
+            "TryStatement:exit": leaveStatement,
+            "VariableDeclaration:exit": leaveStatement,
+            "WhileStatement:exit": leaveStatement,
+            "WithStatement:exit": leaveStatement,
+            "ExportNamedDeclaration:exit": leaveStatement,
+            "ExportDefaultDeclaration:exit": leaveStatement,
+            "ExportAllDeclaration:exit": leaveStatement,
+            "Program:exit": reportFirstExtraStatementAndClear
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/max-statements.js

@@ -0,0 +1,170 @@
+/**
+ * @fileoverview A rule to set the maximum number of statements in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum number of statements allowed in function blocks",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    ignoreTopLevelFunctions: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0],
+            ignoreTopLevelFunctions = context.options[1] && context.options[1].ignoreTopLevelFunctions || false,
+            topLevelFunctions = [];
+        let maxStatements = 10;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            maxStatements = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            maxStatements = option.max;
+        }
+        if (typeof option === "number") {
+            maxStatements = option;
+        }
+
+        /**
+         * Reports a node if it has too many statements
+         * @param {ASTNode} node node to evaluate
+         * @param {int} count Number of statements in node
+         * @param {int} max Maximum number of statements allowed
+         * @returns {void}
+         * @private
+         */
+        function reportIfTooManyStatements(node, count, max) {
+            if (count > max) {
+                const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
+
+                context.report({
+                    node,
+                    message: "{{name}} has too many statements ({{count}}). Maximum allowed is {{max}}.",
+                    data: { name, count, max }
+                });
+            }
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * Evaluate the node at the end of function
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function endFunction(node) {
+            const count = functionStack.pop();
+
+            if (ignoreTopLevelFunctions && functionStack.length === 0) {
+                topLevelFunctions.push({ node, count });
+            } else {
+                reportIfTooManyStatements(node, count, maxStatements);
+            }
+        }
+
+        /**
+         * Increment the count of the functions
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function countStatements(node) {
+            functionStack[functionStack.length - 1] += node.body.length;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+
+            BlockStatement: countStatements,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+
+            "Program:exit"() {
+                if (topLevelFunctions.length === 1) {
+                    return;
+                }
+
+                topLevelFunctions.forEach(element => {
+                    const count = element.count;
+                    const node = element.node;
+
+                    reportIfTooManyStatements(node, count, maxStatements);
+                });
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/multiline-ternary.js

@@ -0,0 +1,83 @@
+/**
+ * @fileoverview Enforce newlines between operands of ternary expressions
+ * @author Kai Cataldo
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce newlines between operands of ternary expressions",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ]
+    },
+
+    create(context) {
+        const multiline = context.options[0] !== "never";
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tests whether node is preceded by supplied tokens
+         * @param {ASTNode} node - node to check
+         * @param {ASTNode} parentNode - parent of node to report
+         * @param {boolean} expected - whether newline was expected or not
+         * @returns {void}
+         * @private
+         */
+        function reportError(node, parentNode, expected) {
+            context.report({
+                node,
+                message: "{{expected}} newline between {{typeOfError}} of ternary expression.",
+                data: {
+                    expected: expected ? "Expected" : "Unexpected",
+                    typeOfError: node === parentNode.test ? "test and consequent" : "consequent and alternate"
+                }
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ConditionalExpression(node) {
+                const areTestAndConsequentOnSameLine = astUtils.isTokenOnSameLine(node.test, node.consequent);
+                const areConsequentAndAlternateOnSameLine = astUtils.isTokenOnSameLine(node.consequent, node.alternate);
+
+                if (!multiline) {
+                    if (!areTestAndConsequentOnSameLine) {
+                        reportError(node.test, node, false);
+                    }
+
+                    if (!areConsequentAndAlternateOnSameLine) {
+                        reportError(node.consequent, node, false);
+                    }
+                } else {
+                    if (areTestAndConsequentOnSameLine) {
+                        reportError(node.test, node, true);
+                    }
+
+                    if (areConsequentAndAlternateOnSameLine) {
+                        reportError(node.consequent, node, true);
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/new-cap.js

@@ -0,0 +1,271 @@
+/**
+ * @fileoverview Rule to flag use of constructors without capital letters
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const CAPS_ALLOWED = [
+    "Array",
+    "Boolean",
+    "Date",
+    "Error",
+    "Function",
+    "Number",
+    "Object",
+    "RegExp",
+    "String",
+    "Symbol"
+];
+
+/**
+ * Ensure that if the key is provided, it must be an array.
+ * @param {Object} obj Object to check with `key`.
+ * @param {string} key Object key to check on `obj`.
+ * @param {*} fallback If obj[key] is not present, this will be returned.
+ * @returns {string[]} Returns obj[key] if it's an Array, otherwise `fallback`
+ */
+function checkArray(obj, key, fallback) {
+
+    /* istanbul ignore if */
+    if (Object.prototype.hasOwnProperty.call(obj, key) && !Array.isArray(obj[key])) {
+        throw new TypeError(`${key}, if provided, must be an Array`);
+    }
+    return obj[key] || fallback;
+}
+
+/**
+ * A reducer function to invert an array to an Object mapping the string form of the key, to `true`.
+ * @param {Object} map Accumulator object for the reduce.
+ * @param {string} key Object key to set to `true`.
+ * @returns {Object} Returns the updated Object for further reduction.
+ */
+function invert(map, key) {
+    map[key] = true;
+    return map;
+}
+
+/**
+ * Creates an object with the cap is new exceptions as its keys and true as their values.
+ * @param {Object} config Rule configuration
+ * @returns {Object} Object with cap is new exceptions.
+ */
+function calculateCapIsNewExceptions(config) {
+    let capIsNewExceptions = checkArray(config, "capIsNewExceptions", CAPS_ALLOWED);
+
+    if (capIsNewExceptions !== CAPS_ALLOWED) {
+        capIsNewExceptions = capIsNewExceptions.concat(CAPS_ALLOWED);
+    }
+
+    return capIsNewExceptions.reduce(invert, {});
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require constructor names to begin with a capital letter",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    newIsCap: {
+                        type: "boolean"
+                    },
+                    capIsNew: {
+                        type: "boolean"
+                    },
+                    newIsCapExceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    newIsCapExceptionPattern: {
+                        type: "string"
+                    },
+                    capIsNewExceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    capIsNewExceptionPattern: {
+                        type: "string"
+                    },
+                    properties: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const config = context.options[0] ? Object.assign({}, context.options[0]) : {};
+
+        config.newIsCap = config.newIsCap !== false;
+        config.capIsNew = config.capIsNew !== false;
+        const skipProperties = config.properties === false;
+
+        const newIsCapExceptions = checkArray(config, "newIsCapExceptions", []).reduce(invert, {});
+        const newIsCapExceptionPattern = config.newIsCapExceptionPattern ? new RegExp(config.newIsCapExceptionPattern) : null;
+
+        const capIsNewExceptions = calculateCapIsNewExceptions(config);
+        const capIsNewExceptionPattern = config.capIsNewExceptionPattern ? new RegExp(config.capIsNewExceptionPattern) : null;
+
+        const listeners = {};
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Get exact callee name from expression
+         * @param {ASTNode} node CallExpression or NewExpression node
+         * @returns {string} name
+         */
+        function extractNameFromExpression(node) {
+
+            let name = "";
+
+            if (node.callee.type === "MemberExpression") {
+                const property = node.callee.property;
+
+                if (property.type === "Literal" && (typeof property.value === "string")) {
+                    name = property.value;
+                } else if (property.type === "Identifier" && !node.callee.computed) {
+                    name = property.name;
+                }
+            } else {
+                name = node.callee.name;
+            }
+            return name;
+        }
+
+        /**
+         * Returns the capitalization state of the string -
+         * Whether the first character is uppercase, lowercase, or non-alphabetic
+         * @param {string} str String
+         * @returns {string} capitalization state: "non-alpha", "lower", or "upper"
+         */
+        function getCap(str) {
+            const firstChar = str.charAt(0);
+
+            const firstCharLower = firstChar.toLowerCase();
+            const firstCharUpper = firstChar.toUpperCase();
+
+            if (firstCharLower === firstCharUpper) {
+
+                // char has no uppercase variant, so it's non-alphabetic
+                return "non-alpha";
+            } else if (firstChar === firstCharLower) {
+                return "lower";
+            }
+            return "upper";
+
+        }
+
+        /**
+         * Check if capitalization is allowed for a CallExpression
+         * @param {Object} allowedMap Object mapping calleeName to a Boolean
+         * @param {ASTNode} node CallExpression node
+         * @param {string} calleeName Capitalized callee name from a CallExpression
+         * @param {Object} pattern RegExp object from options pattern
+         * @returns {boolean} Returns true if the callee may be capitalized
+         */
+        function isCapAllowed(allowedMap, node, calleeName, pattern) {
+            const sourceText = sourceCode.getText(node.callee);
+
+            if (allowedMap[calleeName] || allowedMap[sourceText]) {
+                return true;
+            }
+
+            if (pattern && pattern.test(sourceText)) {
+                return true;
+            }
+
+            if (calleeName === "UTC" && node.callee.type === "MemberExpression") {
+
+                // allow if callee is Date.UTC
+                return node.callee.object.type === "Identifier" &&
+                    node.callee.object.name === "Date";
+            }
+
+            return skipProperties && node.callee.type === "MemberExpression";
+        }
+
+        /**
+         * Reports the given message for the given node. The location will be the start of the property or the callee.
+         * @param {ASTNode} node CallExpression or NewExpression node.
+         * @param {string} message The message to report.
+         * @returns {void}
+         */
+        function report(node, message) {
+            let callee = node.callee;
+
+            if (callee.type === "MemberExpression") {
+                callee = callee.property;
+            }
+
+            context.report({ node, loc: callee.loc.start, message });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        if (config.newIsCap) {
+            listeners.NewExpression = function(node) {
+
+                const constructorName = extractNameFromExpression(node);
+
+                if (constructorName) {
+                    const capitalization = getCap(constructorName);
+                    const isAllowed = capitalization !== "lower" || isCapAllowed(newIsCapExceptions, node, constructorName, newIsCapExceptionPattern);
+
+                    if (!isAllowed) {
+                        report(node, "A constructor name should not start with a lowercase letter.");
+                    }
+                }
+            };
+        }
+
+        if (config.capIsNew) {
+            listeners.CallExpression = function(node) {
+
+                const calleeName = extractNameFromExpression(node);
+
+                if (calleeName) {
+                    const capitalization = getCap(calleeName);
+                    const isAllowed = capitalization !== "upper" || isCapAllowed(capIsNewExceptions, node, calleeName, capIsNewExceptionPattern);
+
+                    if (!isAllowed) {
+                        report(node, "A function with a name starting with an uppercase letter should only be used as a constructor.");
+                    }
+                }
+            };
+        }
+
+        return listeners;
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/new-parens.js

@@ -0,0 +1,58 @@
+/**
+ * @fileoverview Rule to flag when using constructor without parentheses
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require parentheses when invoking a constructor with no arguments",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        return {
+            NewExpression(node) {
+                if (node.arguments.length !== 0) {
+                    return;  // shortcut: if there are arguments, there have to be parens
+                }
+
+                const lastToken = sourceCode.getLastToken(node);
+                const hasLastParen = lastToken && astUtils.isClosingParenToken(lastToken);
+                const hasParens = hasLastParen && astUtils.isOpeningParenToken(sourceCode.getTokenBefore(lastToken));
+
+                if (!hasParens) {
+                    context.report({
+                        node,
+                        message: "Missing '()' invoking a constructor.",
+                        fix: fixer => fixer.insertTextAfter(node, "()")
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/newline-after-var.js

@@ -0,0 +1,248 @@
+/**
+ * @fileoverview Rule to check empty newline after "var" statement
+ * @author Gopal Venkatesan
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require or disallow an empty line after variable declarations",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                enum: ["never", "always"]
+            }
+        ],
+
+        fixable: "whitespace"
+    },
+
+    create(context) {
+
+        const ALWAYS_MESSAGE = "Expected blank line after variable declarations.",
+            NEVER_MESSAGE = "Unexpected blank line after variable declarations.";
+
+        const sourceCode = context.getSourceCode();
+
+        // Default `mode` to "always".
+        const mode = context.options[0] === "never" ? "never" : "always";
+
+        // Cache starting and ending line numbers of comments for faster lookup
+        const commentEndLine = sourceCode.getAllComments().reduce((result, token) => {
+            result[token.loc.start.line] = token.loc.end.line;
+            return result;
+        }, {});
+
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Gets a token from the given node to compare line to the next statement.
+         *
+         * In general, the token is the last token of the node. However, the token is the second last token if the following conditions satisfy.
+         *
+         * - The last token is semicolon.
+         * - The semicolon is on a different line from the previous token of the semicolon.
+         *
+         * This behavior would address semicolon-less style code. e.g.:
+         *
+         *     var foo = 1
+         *
+         *     ;(a || b).doSomething()
+         *
+         * @param {ASTNode} node - The node to get.
+         * @returns {Token} The token to compare line to the next statement.
+         */
+        function getLastToken(node) {
+            const lastToken = sourceCode.getLastToken(node);
+
+            if (lastToken.type === "Punctuator" && lastToken.value === ";") {
+                const prevToken = sourceCode.getTokenBefore(lastToken);
+
+                if (prevToken.loc.end.line !== lastToken.loc.start.line) {
+                    return prevToken;
+                }
+            }
+
+            return lastToken;
+        }
+
+        /**
+         * Determine if provided keyword is a variable declaration
+         * @private
+         * @param {string} keyword - keyword to test
+         * @returns {boolean} True if `keyword` is a type of var
+         */
+        function isVar(keyword) {
+            return keyword === "var" || keyword === "let" || keyword === "const";
+        }
+
+        /**
+         * Determine if provided keyword is a variant of for specifiers
+         * @private
+         * @param {string} keyword - keyword to test
+         * @returns {boolean} True if `keyword` is a variant of for specifier
+         */
+        function isForTypeSpecifier(keyword) {
+            return keyword === "ForStatement" || keyword === "ForInStatement" || keyword === "ForOfStatement";
+        }
+
+        /**
+         * Determine if provided keyword is an export specifiers
+         * @private
+         * @param {string} nodeType - nodeType to test
+         * @returns {boolean} True if `nodeType` is an export specifier
+         */
+        function isExportSpecifier(nodeType) {
+            return nodeType === "ExportNamedDeclaration" || nodeType === "ExportSpecifier" ||
+                nodeType === "ExportDefaultDeclaration" || nodeType === "ExportAllDeclaration";
+        }
+
+        /**
+         * Determine if provided node is the last of their parent block.
+         * @private
+         * @param {ASTNode} node - node to test
+         * @returns {boolean} True if `node` is last of their parent block.
+         */
+        function isLastNode(node) {
+            const token = sourceCode.getTokenAfter(node);
+
+            return !token || (token.type === "Punctuator" && token.value === "}");
+        }
+
+        /**
+        * Gets the last line of a group of consecutive comments
+        * @param {number} commentStartLine The starting line of the group
+        * @returns {number} The number of the last comment line of the group
+        */
+        function getLastCommentLineOfBlock(commentStartLine) {
+            const currentCommentEnd = commentEndLine[commentStartLine];
+
+            return commentEndLine[currentCommentEnd + 1] ? getLastCommentLineOfBlock(currentCommentEnd + 1) : currentCommentEnd;
+        }
+
+        /**
+         * Determine if a token starts more than one line after a comment ends
+         * @param  {token}   token            The token being checked
+         * @param {integer}  commentStartLine The line number on which the comment starts
+         * @returns {boolean}                 True if `token` does not start immediately after a comment
+         */
+        function hasBlankLineAfterComment(token, commentStartLine) {
+            return token.loc.start.line > getLastCommentLineOfBlock(commentStartLine) + 1;
+        }
+
+        /**
+         * Checks that a blank line exists after a variable declaration when mode is
+         * set to "always", or checks that there is no blank line when mode is set
+         * to "never"
+         * @private
+         * @param {ASTNode} node - `VariableDeclaration` node to test
+         * @returns {void}
+         */
+        function checkForBlankLine(node) {
+
+            /*
+             * lastToken is the last token on the node's line. It will usually also be the last token of the node, but it will
+             * sometimes be second-last if there is a semicolon on a different line.
+             */
+            const lastToken = getLastToken(node),
+
+                /*
+                 * If lastToken is the last token of the node, nextToken should be the token after the node. Otherwise, nextToken
+                 * is the last token of the node.
+                 */
+                nextToken = lastToken === sourceCode.getLastToken(node) ? sourceCode.getTokenAfter(node) : sourceCode.getLastToken(node),
+                nextLineNum = lastToken.loc.end.line + 1;
+
+            // Ignore if there is no following statement
+            if (!nextToken) {
+                return;
+            }
+
+            // Ignore if parent of node is a for variant
+            if (isForTypeSpecifier(node.parent.type)) {
+                return;
+            }
+
+            // Ignore if parent of node is an export specifier
+            if (isExportSpecifier(node.parent.type)) {
+                return;
+            }
+
+            // Some coding styles use multiple `var` statements, so do nothing if
+            // the next token is a `var` statement.
+            if (nextToken.type === "Keyword" && isVar(nextToken.value)) {
+                return;
+            }
+
+            // Ignore if it is last statement in a block
+            if (isLastNode(node)) {
+                return;
+            }
+
+            // Next statement is not a `var`...
+            const noNextLineToken = nextToken.loc.start.line > nextLineNum;
+            const hasNextLineComment = (typeof commentEndLine[nextLineNum] !== "undefined");
+
+            if (mode === "never" && noNextLineToken && !hasNextLineComment) {
+                context.report({
+                    node,
+                    message: NEVER_MESSAGE,
+                    data: { identifier: node.name },
+                    fix(fixer) {
+                        const linesBetween = sourceCode.getText().slice(lastToken.range[1], nextToken.range[0]).split(astUtils.LINEBREAK_MATCHER);
+
+                        return fixer.replaceTextRange([lastToken.range[1], nextToken.range[0]], `${linesBetween.slice(0, -1).join("")}\n${linesBetween[linesBetween.length - 1]}`);
+                    }
+                });
+            }
+
+            // Token on the next line, or comment without blank line
+            if (
+                mode === "always" && (
+                    !noNextLineToken ||
+                    hasNextLineComment && !hasBlankLineAfterComment(nextToken, nextLineNum)
+                )
+            ) {
+                context.report({
+                    node,
+                    message: ALWAYS_MESSAGE,
+                    data: { identifier: node.name },
+                    fix(fixer) {
+                        if ((noNextLineToken ? getLastCommentLineOfBlock(nextLineNum) : lastToken.loc.end.line) === nextToken.loc.start.line) {
+                            return fixer.insertTextBefore(nextToken, "\n\n");
+                        }
+
+                        return fixer.insertTextBeforeRange([nextToken.range[0] - nextToken.loc.start.column, nextToken.range[1]], "\n");
+                    }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclaration: checkForBlankLine
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/newline-before-return.js

@@ -0,0 +1,203 @@
+/**
+ * @fileoverview Rule to require newlines before `return` statement
+ * @author Kai Cataldo
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require an empty line before `return` statements",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "whitespace",
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tests whether node is preceded by supplied tokens
+         * @param {ASTNode} node - node to check
+         * @param {array} testTokens - array of tokens to test against
+         * @returns {boolean} Whether or not the node is preceded by one of the supplied tokens
+         * @private
+         */
+        function isPrecededByTokens(node, testTokens) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            return testTokens.some(token => tokenBefore.value === token);
+        }
+
+        /**
+         * Checks whether node is the first node after statement or in block
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} Whether or not the node is the first node after statement or in block
+         * @private
+         */
+        function isFirstNode(node) {
+            const parentType = node.parent.type;
+
+            if (node.parent.body) {
+                return Array.isArray(node.parent.body)
+                  ? node.parent.body[0] === node
+                  : node.parent.body === node;
+            }
+
+            if (parentType === "IfStatement") {
+                return isPrecededByTokens(node, ["else", ")"]);
+            } else if (parentType === "DoWhileStatement") {
+                return isPrecededByTokens(node, ["do"]);
+            } else if (parentType === "SwitchCase") {
+                return isPrecededByTokens(node, [":"]);
+            }
+            return isPrecededByTokens(node, [")"]);
+
+        }
+
+        /**
+         * Returns the number of lines of comments that precede the node
+         * @param {ASTNode} node - node to check for overlapping comments
+         * @param {number} lineNumTokenBefore - line number of previous token, to check for overlapping comments
+         * @returns {number} Number of lines of comments that precede the node
+         * @private
+         */
+        function calcCommentLines(node, lineNumTokenBefore) {
+            const comments = sourceCode.getComments(node).leading;
+            let numLinesComments = 0;
+
+            if (!comments.length) {
+                return numLinesComments;
+            }
+
+            comments.forEach(comment => {
+                numLinesComments++;
+
+                if (comment.type === "Block") {
+                    numLinesComments += comment.loc.end.line - comment.loc.start.line;
+                }
+
+                // avoid counting lines with inline comments twice
+                if (comment.loc.start.line === lineNumTokenBefore) {
+                    numLinesComments--;
+                }
+
+                if (comment.loc.end.line === node.loc.start.line) {
+                    numLinesComments--;
+                }
+            });
+
+            return numLinesComments;
+        }
+
+        /**
+         * Returns the line number of the token before the node that is passed in as an argument
+         * @param {ASTNode} node - The node to use as the start of the calculation
+         * @returns {number} Line number of the token before `node`
+         * @private
+         */
+        function getLineNumberOfTokenBefore(node) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            let lineNumTokenBefore;
+
+            /**
+             * Global return (at the beginning of a script) is a special case.
+             * If there is no token before `return`, then we expect no line
+             * break before the return. Comments are allowed to occupy lines
+             * before the global return, just no blank lines.
+             * Setting lineNumTokenBefore to zero in that case results in the
+             * desired behavior.
+             */
+            if (tokenBefore) {
+                lineNumTokenBefore = tokenBefore.loc.end.line;
+            } else {
+                lineNumTokenBefore = 0;     // global return at beginning of script
+            }
+
+            return lineNumTokenBefore;
+        }
+
+        /**
+         * Checks whether node is preceded by a newline
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} Whether or not the node is preceded by a newline
+         * @private
+         */
+        function hasNewlineBefore(node) {
+            const lineNumNode = node.loc.start.line;
+            const lineNumTokenBefore = getLineNumberOfTokenBefore(node);
+            const commentLines = calcCommentLines(node, lineNumTokenBefore);
+
+            return (lineNumNode - lineNumTokenBefore - commentLines) > 1;
+        }
+
+        /**
+         * Checks whether it is safe to apply a fix to a given return statement.
+         *
+         * The fix is not considered safe if the given return statement has leading comments,
+         * as we cannot safely determine if the newline should be added before or after the comments.
+         * For more information, see: https://github.com/eslint/eslint/issues/5958#issuecomment-222767211
+         *
+         * @param {ASTNode} node - The return statement node to check.
+         * @returns {boolean} `true` if it can fix the node.
+         * @private
+         */
+        function canFix(node) {
+            const leadingComments = sourceCode.getComments(node).leading;
+            const lastLeadingComment = leadingComments[leadingComments.length - 1];
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            if (leadingComments.length === 0) {
+                return true;
+            }
+
+            // if the last leading comment ends in the same line as the previous token and
+            // does not share a line with the `return` node, we can consider it safe to fix.
+            // Example:
+            // function a() {
+            //     var b; //comment
+            //     return;
+            // }
+            if (lastLeadingComment.loc.end.line === tokenBefore.loc.end.line &&
+                lastLeadingComment.loc.end.line !== node.loc.start.line) {
+                return true;
+            }
+
+            return false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ReturnStatement(node) {
+                if (!isFirstNode(node) && !hasNewlineBefore(node)) {
+                    context.report({
+                        node,
+                        message: "Expected newline before return statement.",
+                        fix(fixer) {
+                            if (canFix(node)) {
+                                const tokenBefore = sourceCode.getTokenBefore(node);
+                                const newlines = node.loc.start.line === tokenBefore.loc.end.line ? "\n\n" : "\n";
+
+                                return fixer.insertTextBefore(node, newlines);
+                            }
+                            return null;
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/newline-per-chained-call.js

@@ -0,0 +1,86 @@
+/**
+ * @fileoverview Rule to ensure newline per method call when chaining calls
+ * @author Rajendra Patil
+ * @author Burak Yigit Kaya
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "require a newline after each call in a method chain",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                ignoreChainWithDepth: {
+                    type: "integer",
+                    minimum: 1,
+                    maximum: 10
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+
+    create(context) {
+
+        const options = context.options[0] || {},
+            ignoreChainWithDepth = options.ignoreChainWithDepth || 2;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Gets the property text of a given MemberExpression node.
+         * If the text is multiline, this returns only the first line.
+         *
+         * @param {ASTNode} node - A MemberExpression node to get.
+         * @returns {string} The property text of the node.
+         */
+        function getPropertyText(node) {
+            const prefix = node.computed ? "[" : ".";
+            const lines = sourceCode.getText(node.property).split(astUtils.LINEBREAK_MATCHER);
+            const suffix = node.computed && lines.length === 1 ? "]" : "";
+
+            return prefix + lines[0] + suffix;
+        }
+
+        return {
+            "CallExpression:exit"(node) {
+                if (!node.callee || node.callee.type !== "MemberExpression") {
+                    return;
+                }
+
+                const callee = node.callee;
+                let parent = callee.object;
+                let depth = 1;
+
+                while (parent && parent.callee) {
+                    depth += 1;
+                    parent = parent.callee.object;
+                }
+
+                if (depth > ignoreChainWithDepth && callee.property.loc.start.line === callee.object.loc.end.line) {
+                    context.report({
+                        node: callee.property,
+                        loc: callee.property.loc.start,
+                        message: "Expected line break before `{{callee}}`.",
+                        data: {
+                            callee: getPropertyText(callee)
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-alert.js

@@ -0,0 +1,131 @@
+/**
+ * @fileoverview Rule to flag use of alert, confirm, prompt
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const getPropertyName = require("../ast-utils").getStaticPropertyName;
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks if the given name is a prohibited identifier.
+ * @param {string} name The name to check
+ * @returns {boolean} Whether or not the name is prohibited.
+ */
+function isProhibitedIdentifier(name) {
+    return /^(alert|confirm|prompt)$/.test(name);
+}
+
+/**
+ * Reports the given node and identifier name.
+ * @param {RuleContext} context The ESLint rule context.
+ * @param {ASTNode} node The node to report on.
+ * @param {string} identifierName The name of the identifier.
+ * @returns {void}
+ */
+function report(context, node, identifierName) {
+    context.report(node, "Unexpected {{name}}.", { name: identifierName });
+}
+
+/**
+ * Finds the escope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    if (references.length === 1) {
+        return references[0];
+    }
+    return null;
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {Object} globalScope The global scope.
+ * @param {string} node The identifier node to check
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, globalScope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+/**
+ * Checks if the given identifier node is a ThisExpression in the global scope or the global window property.
+ * @param {Object} scope The current scope.
+ * @param {Object} globalScope The global scope.
+ * @param {string} node The identifier node to check
+ * @returns {boolean} Whether or not the node is a reference to the global object.
+ */
+function isGlobalThisReferenceOrGlobalWindow(scope, globalScope, node) {
+    if (scope.type === "global" && node.type === "ThisExpression") {
+        return true;
+    } else if (node.name === "window") {
+        return !isShadowed(scope, globalScope, node);
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow the use of `alert`, `confirm`, and `prompt`",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        let globalScope;
+
+        return {
+
+            Program() {
+                globalScope = context.getScope();
+            },
+
+            CallExpression(node) {
+                const callee = node.callee,
+                    currentScope = context.getScope();
+
+                // without window.
+                if (callee.type === "Identifier") {
+                    const identifierName = callee.name;
+
+                    if (!isShadowed(currentScope, globalScope, callee) && isProhibitedIdentifier(callee.name)) {
+                        report(context, node, identifierName);
+                    }
+
+                } else if (callee.type === "MemberExpression" && isGlobalThisReferenceOrGlobalWindow(currentScope, globalScope, callee.object)) {
+                    const identifierName = getPropertyName(callee);
+
+                    if (isProhibitedIdentifier(identifierName)) {
+                        report(context, node, identifierName);
+                    }
+                }
+
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-array-constructor.js

@@ -0,0 +1,47 @@
+/**
+ * @fileoverview Disallow construction of dense arrays using the Array constructor
+ * @author Matt DuVall <http://www.mattduvall.com/>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `Array` constructors",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Disallow construction of dense arrays using the Array constructor
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function check(node) {
+            if (
+                node.arguments.length !== 1 &&
+                node.callee.type === "Identifier" &&
+                node.callee.name === "Array"
+            ) {
+                context.report({ node, message: "The array literal notation [] is preferrable." });
+            }
+        }
+
+        return {
+            CallExpression: check,
+            NewExpression: check
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-await-in-loop.js

@@ -0,0 +1,75 @@
+/**
+ * @fileoverview Rule to disallow uses of await inside of loops.
+ * @author Nat Mote (nmote)
+ */
+"use strict";
+
+// Node types which are considered loops.
+const loopTypes = new Set([
+    "ForStatement",
+    "ForOfStatement",
+    "ForInStatement",
+    "WhileStatement",
+    "DoWhileStatement"
+]);
+
+// Node types at which we should stop looking for loops. For example, it is fine to declare an async
+// function within a loop, and use await inside of that.
+const boundaryTypes = new Set([
+    "FunctionDeclaration",
+    "FunctionExpression",
+    "ArrowFunctionExpression"
+]);
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `await` inside of loops",
+            category: "Possible Errors",
+            recommended: false
+        },
+        schema: []
+    },
+    create(context) {
+        return {
+            AwaitExpression(node) {
+                const ancestors = context.getAncestors();
+
+                // Reverse so that we can traverse from the deepest node upwards.
+                ancestors.reverse();
+
+                // Create a set of all the ancestors plus this node so that we can check
+                // if this use of await appears in the body of the loop as opposed to
+                // the right-hand side of a for...of, for example.
+                const ancestorSet = new Set(ancestors).add(node);
+
+                for (let i = 0; i < ancestors.length; i++) {
+                    const ancestor = ancestors[i];
+
+                    if (boundaryTypes.has(ancestor.type)) {
+
+                        // Short-circuit out if we encounter a boundary type. Loops above
+                        // this do not matter.
+                        return;
+                    }
+                    if (loopTypes.has(ancestor.type)) {
+
+                        // Only report if we are actually in the body or another part that gets executed on
+                        // every iteration.
+                        if (
+                            ancestorSet.has(ancestor.body) ||
+                            ancestorSet.has(ancestor.test) ||
+                            ancestorSet.has(ancestor.update)
+                        ) {
+                            context.report({
+                                node,
+                                message: "Unexpected `await` inside a loop."
+                            });
+                            return;
+                        }
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-bitwise.js

@@ -0,0 +1,109 @@
+/**
+ * @fileoverview Rule to flag bitwise identifiers
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//
+// Set of bitwise operators.
+//
+const BITWISE_OPERATORS = [
+    "^", "|", "&", "<<", ">>", ">>>",
+    "^=", "|=", "&=", "<<=", ">>=", ">>>=",
+    "~"
+];
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow bitwise operators",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: {
+                            enum: BITWISE_OPERATORS
+                        },
+                        uniqueItems: true
+                    },
+                    int32Hint: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+        const int32Hint = options.int32Hint === true;
+
+        /**
+         * Reports an unexpected use of a bitwise operator.
+         * @param   {ASTNode} node Node which contains the bitwise operator.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({ node, message: "Unexpected use of '{{operator}}'.", data: { operator: node.operator } });
+        }
+
+        /**
+         * Checks if the given node has a bitwise operator.
+         * @param   {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node has a bitwise operator.
+         */
+        function hasBitwiseOperator(node) {
+            return BITWISE_OPERATORS.indexOf(node.operator) !== -1;
+        }
+
+        /**
+         * Checks if exceptions were provided, e.g. `{ allow: ['~', '|'] }`.
+         * @param   {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node has a bitwise operator.
+         */
+        function allowedOperator(node) {
+            return allowed.indexOf(node.operator) !== -1;
+        }
+
+        /**
+         * Checks if the given bitwise operator is used for integer typecasting, i.e. "|0"
+         * @param   {ASTNode} node The node to check.
+         * @returns {boolean} whether the node is used in integer typecasting.
+         */
+        function isInt32Hint(node) {
+            return int32Hint && node.operator === "|" && node.right &&
+              node.right.type === "Literal" && node.right.value === 0;
+        }
+
+        /**
+         * Report if the given node contains a bitwise operator.
+         * @param   {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNodeForBitwiseOperator(node) {
+            if (hasBitwiseOperator(node) && !allowedOperator(node) && !isInt32Hint(node)) {
+                report(node);
+            }
+        }
+
+        return {
+            AssignmentExpression: checkNodeForBitwiseOperator,
+            BinaryExpression: checkNodeForBitwiseOperator,
+            UnaryExpression: checkNodeForBitwiseOperator
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-caller.js

@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Rule to flag use of arguments.callee and arguments.caller.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow the use of `arguments.caller` or `arguments.callee`",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+
+            MemberExpression(node) {
+                const objectName = node.object.name,
+                    propertyName = node.property.name;
+
+                if (objectName === "arguments" && !node.computed && propertyName && propertyName.match(/^calle[er]$/)) {
+                    context.report({ node, message: "Avoid arguments.{{property}}.", data: { property: propertyName } });
+                }
+
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-case-declarations.js

@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Rule to flag use of an lexical declarations inside a case clause
+ * @author Erik Arvidsson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow lexical declarations in case clauses",
+            category: "Best Practices",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Checks whether or not a node is a lexical declaration.
+         * @param {ASTNode} node A direct child statement of a switch case.
+         * @returns {boolean} Whether or not the node is a lexical declaration.
+         */
+        function isLexicalDeclaration(node) {
+            switch (node.type) {
+                case "FunctionDeclaration":
+                case "ClassDeclaration":
+                    return true;
+                case "VariableDeclaration":
+                    return node.kind !== "var";
+                default:
+                    return false;
+            }
+        }
+
+        return {
+            SwitchCase(node) {
+                for (let i = 0; i < node.consequent.length; i++) {
+                    const statement = node.consequent[i];
+
+                    if (isLexicalDeclaration(statement)) {
+                        context.report({
+                            node,
+                            message: "Unexpected lexical declaration in case block."
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-catch-shadow.js

@@ -0,0 +1,67 @@
+/**
+ * @fileoverview Rule to flag variable leak in CatchClauses in IE 8 and earlier
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `catch` clause parameters from shadowing variables in the outer scope",
+            category: "Variables",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if the parameters are been shadowed
+         * @param {Object} scope current scope
+         * @param {string} name parameter name
+         * @returns {boolean} True is its been shadowed
+         */
+        function paramIsShadowing(scope, name) {
+            return astUtils.getVariableByName(scope, name) !== null;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            CatchClause(node) {
+                let scope = context.getScope();
+
+                // When blockBindings is enabled, CatchClause creates its own scope
+                // so start from one upper scope to exclude the current node
+                if (scope.block === node) {
+                    scope = scope.upper;
+                }
+
+                if (paramIsShadowing(scope, node.param.name)) {
+                    context.report({ node, message: "Value of '{{name}}' may be overwritten in IE 8 and earlier.", data: { name: node.param.name } });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-class-assign.js

@@ -0,0 +1,54 @@
+/**
+ * @fileoverview A rule to disallow modifying variables of class declarations
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow reassigning class members",
+            category: "ECMAScript 6",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable - A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, message: "'{{name}}' is a class.", data: { name: reference.identifier.name } });
+
+            });
+        }
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {ASTNode} node - A ClassDeclaration/ClassExpression node to check.
+         * @returns {void}
+         */
+        function checkForClass(node) {
+            context.getDeclaredVariables(node).forEach(checkVariable);
+        }
+
+        return {
+            ClassDeclaration: checkForClass,
+            ClassExpression: checkForClass
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-compare-neg-zero.js

@@ -0,0 +1,53 @@
+/**
+ * @fileoverview The rule should warn against code that tries to compare against -0.
+ * @author Aladdin-ADD <hh_2013@foxmail.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow comparing against -0",
+            category: "Possible Errors",
+            recommended: false
+        },
+        fixable: null,
+        schema: []
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks a given node is -0
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} `true` if the node is -0.
+         */
+        function isNegZero(node) {
+            return node.type === "UnaryExpression" && node.operator === "-" && node.argument.type === "Literal" && node.argument.value === 0;
+        }
+        const OPERATORS_TO_CHECK = new Set([">", ">=", "<", "<=", "==", "===", "!=", "!=="]);
+
+        return {
+            BinaryExpression(node) {
+                if (OPERATORS_TO_CHECK.has(node.operator)) {
+                    if (isNegZero(node.left) || isNegZero(node.right)) {
+                        context.report({
+                            node,
+                            message: "Do not use the '{{operator}}' operator to compare against -0.",
+                            data: { operator: node.operator }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-cond-assign.js

@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Rule to flag assignment in a conditional statement's test expression
+ * @author Stephen Murray <spmurrayzzz>
+ */
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+const NODE_DESCRIPTIONS = {
+    DoWhileStatement: "a 'do...while' statement",
+    ForStatement: "a 'for' statement",
+    IfStatement: "an 'if' statement",
+    WhileStatement: "a 'while' statement"
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow assignment operators in conditional expressions",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: [
+            {
+                enum: ["except-parens", "always"]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const prohibitAssign = (context.options[0] || "except-parens");
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Check whether an AST node is the test expression for a conditional statement.
+         * @param {!Object} node The node to test.
+         * @returns {boolean} `true` if the node is the text expression for a conditional statement; otherwise, `false`.
+         */
+        function isConditionalTestExpression(node) {
+            return node.parent &&
+                node.parent.test &&
+                node === node.parent.test;
+        }
+
+        /**
+         * Given an AST node, perform a bottom-up search for the first ancestor that represents a conditional statement.
+         * @param {!Object} node The node to use at the start of the search.
+         * @returns {?Object} The closest ancestor node that represents a conditional statement.
+         */
+        function findConditionalAncestor(node) {
+            let currentAncestor = node;
+
+            do {
+                if (isConditionalTestExpression(currentAncestor)) {
+                    return currentAncestor.parent;
+                }
+            } while ((currentAncestor = currentAncestor.parent) && !astUtils.isFunction(currentAncestor));
+
+            return null;
+        }
+
+        /**
+         * Check whether the code represented by an AST node is enclosed in two sets of parentheses.
+         * @param {!Object} node The node to test.
+         * @returns {boolean} `true` if the code is enclosed in two sets of parentheses; otherwise, `false`.
+         */
+        function isParenthesisedTwice(node) {
+            const previousToken = sourceCode.getTokenBefore(node, 1),
+                nextToken = sourceCode.getTokenAfter(node, 1);
+
+            return astUtils.isParenthesised(sourceCode, node) &&
+                astUtils.isOpeningParenToken(previousToken) && previousToken.range[1] <= node.range[0] &&
+                astUtils.isClosingParenToken(nextToken) && nextToken.range[0] >= node.range[1];
+        }
+
+        /**
+         * Check a conditional statement's test expression for top-level assignments that are not enclosed in parentheses.
+         * @param {!Object} node The node for the conditional statement.
+         * @returns {void}
+         */
+        function testForAssign(node) {
+            if (node.test &&
+                (node.test.type === "AssignmentExpression") &&
+                (node.type === "ForStatement"
+                    ? !astUtils.isParenthesised(sourceCode, node.test)
+                    : !isParenthesisedTwice(node.test)
+                )
+            ) {
+
+                // must match JSHint's error message
+                context.report({
+                    node,
+                    loc: node.test.loc.start,
+                    message: "Expected a conditional expression and instead saw an assignment."
+                });
+            }
+        }
+
+        /**
+         * Check whether an assignment expression is descended from a conditional statement's test expression.
+         * @param {!Object} node The node for the assignment expression.
+         * @returns {void}
+         */
+        function testForConditionalAncestor(node) {
+            const ancestor = findConditionalAncestor(node);
+
+            if (ancestor) {
+                context.report({ node: ancestor, message: "Unexpected assignment within {{type}}.", data: {
+                    type: NODE_DESCRIPTIONS[ancestor.type] || ancestor.type
+                } });
+            }
+        }
+
+        if (prohibitAssign === "always") {
+            return {
+                AssignmentExpression: testForConditionalAncestor
+            };
+        }
+
+        return {
+            DoWhileStatement: testForAssign,
+            ForStatement: testForAssign,
+            IfStatement: testForAssign,
+            WhileStatement: testForAssign
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-confusing-arrow.js

@@ -0,0 +1,66 @@
+/**
+ * @fileoverview A rule to warn against using arrow functions when they could be
+ * confused with comparisions
+ * @author Jxck <https://github.com/Jxck>
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils.js");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a node is a conditional expression.
+ * @param {ASTNode} node - node to test
+ * @returns {boolean} `true` if the node is a conditional expression.
+ */
+function isConditional(node) {
+    return node && node.type === "ConditionalExpression";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow arrow functions where they could be confused with comparisons",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowParens: { type: "boolean" }
+            },
+            additionalProperties: false
+        }]
+    },
+
+    create(context) {
+        const config = context.options[0] || {};
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports if an arrow function contains an ambiguous conditional.
+         * @param {ASTNode} node - A node to check and report.
+         * @returns {void}
+         */
+        function checkArrowFunc(node) {
+            const body = node.body;
+
+            if (isConditional(body) && !(config.allowParens && astUtils.isParenthesised(sourceCode, body))) {
+                context.report({ node, message: "Arrow function used ambiguously with a conditional expression." });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: checkArrowFunc
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-console.js

@@ -0,0 +1,130 @@
+/**
+ * @fileoverview Rule to flag use of console object
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow the use of `console`",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+
+        /**
+         * Checks whether the given reference is 'console' or not.
+         *
+         * @param {escope.Reference} reference - The reference to check.
+         * @returns {boolean} `true` if the reference is 'console'.
+         */
+        function isConsole(reference) {
+            const id = reference.identifier;
+
+            return id && id.name === "console";
+        }
+
+        /**
+         * Checks whether the property name of the given MemberExpression node
+         * is allowed by options or not.
+         *
+         * @param {ASTNode} node - The MemberExpression node to check.
+         * @returns {boolean} `true` if the property name of the node is allowed.
+         */
+        function isAllowed(node) {
+            const propertyName = astUtils.getStaticPropertyName(node);
+
+            return propertyName && allowed.indexOf(propertyName) !== -1;
+        }
+
+        /**
+         * Checks whether the given reference is a member access which is not
+         * allowed by options or not.
+         *
+         * @param {escope.Reference} reference - The reference to check.
+         * @returns {boolean} `true` if the reference is a member access which
+         *      is not allowed by options.
+         */
+        function isMemberAccessExceptAllowed(reference) {
+            const node = reference.identifier;
+            const parent = node.parent;
+
+            return (
+                parent.type === "MemberExpression" &&
+                parent.object === node &&
+                !isAllowed(parent)
+            );
+        }
+
+        /**
+         * Reports the given reference as a violation.
+         *
+         * @param {escope.Reference} reference - The reference to report.
+         * @returns {void}
+         */
+        function report(reference) {
+            const node = reference.identifier.parent;
+
+            context.report({
+                node,
+                loc: node.loc,
+                message: "Unexpected console statement."
+            });
+        }
+
+        return {
+            "Program:exit"() {
+                const scope = context.getScope();
+                const consoleVar = astUtils.getVariableByName(scope, "console");
+                const shadowed = consoleVar && consoleVar.defs.length > 0;
+
+                /* 'scope.through' includes all references to undefined
+                 * variables. If the variable 'console' is not defined, it uses
+                 * 'scope.through'.
+                 */
+                const references = consoleVar
+                    ? consoleVar.references
+                    : scope.through.filter(isConsole);
+
+                if (!shadowed) {
+                    references
+                        .filter(isMemberAccessExceptAllowed)
+                        .forEach(report);
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-const-assign.js

@@ -0,0 +1,47 @@
+/**
+ * @fileoverview A rule to disallow modifying variables that are declared using `const`
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow reassigning `const` variables",
+            category: "ECMAScript 6",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable - A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, message: "'{{name}}' is constant.", data: { name: reference.identifier.name } });
+            });
+        }
+
+        return {
+            VariableDeclaration(node) {
+                if (node.kind === "const") {
+                    context.getDeclaredVariables(node).forEach(checkVariable);
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-constant-condition.js

@@ -0,0 +1,154 @@
+/**
+ * @fileoverview Rule to flag use constant conditions
+ * @author Christian Schulz <http://rndm.de>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow constant expressions in conditions",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    checkLoops: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {},
+            checkLoops = options.checkLoops !== false;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+
+        /**
+         * Checks if a branch node of LogicalExpression short circuits the whole condition
+         * @param {ASTNode} node The branch of main condition which needs to be checked
+         * @param {string} operator The operator of the main LogicalExpression.
+         * @returns {boolean} true when condition short circuits whole condition
+         */
+        function isLogicalIdentity(node, operator) {
+            switch (node.type) {
+                case "Literal":
+                    return (operator === "||" && node.value === true) ||
+                           (operator === "&&" && node.value === false);
+
+                case "UnaryExpression":
+                    return (operator === "&&" && node.operator === "void");
+
+                case "LogicalExpression":
+                    return isLogicalIdentity(node.left, node.operator) ||
+                             isLogicalIdentity(node.right, node.operator);
+
+                // no default
+            }
+            return false;
+        }
+
+        /**
+         * Checks if a node has a constant truthiness value.
+         * @param {ASTNode} node The AST node to check.
+         * @param {boolean} inBooleanPosition `false` if checking branch of a condition.
+         *  `true` in all other cases
+         * @returns {Bool} true when node's truthiness is constant
+         * @private
+         */
+        function isConstant(node, inBooleanPosition) {
+            switch (node.type) {
+                case "Literal":
+                case "ArrowFunctionExpression":
+                case "FunctionExpression":
+                case "ObjectExpression":
+                case "ArrayExpression":
+                    return true;
+
+                case "UnaryExpression":
+                    if (node.operator === "void") {
+                        return true;
+                    }
+
+                    return (node.operator === "typeof" && inBooleanPosition) ||
+                        isConstant(node.argument, true);
+
+                case "BinaryExpression":
+                    return isConstant(node.left, false) &&
+                            isConstant(node.right, false) &&
+                            node.operator !== "in";
+
+                case "LogicalExpression": {
+                    const isLeftConstant = isConstant(node.left, inBooleanPosition);
+                    const isRightConstant = isConstant(node.right, inBooleanPosition);
+                    const isLeftShortCircuit = (isLeftConstant && isLogicalIdentity(node.left, node.operator));
+                    const isRightShortCircuit = (isRightConstant && isLogicalIdentity(node.right, node.operator));
+
+                    return (isLeftConstant && isRightConstant) || isLeftShortCircuit || isRightShortCircuit;
+                }
+
+                case "AssignmentExpression":
+                    return (node.operator === "=") && isConstant(node.right, inBooleanPosition);
+
+                case "SequenceExpression":
+                    return isConstant(node.expressions[node.expressions.length - 1], inBooleanPosition);
+
+                // no default
+            }
+            return false;
+        }
+
+        /**
+         * Reports when the given node contains a constant condition.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkConstantCondition(node) {
+            if (node.test && isConstant(node.test, true)) {
+                context.report({ node, message: "Unexpected constant condition." });
+            }
+        }
+
+        /**
+         * Checks node when checkLoops option is enabled
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkLoop(node) {
+            if (checkLoops) {
+                checkConstantCondition(node);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ConditionalExpression: checkConstantCondition,
+            IfStatement: checkConstantCondition,
+            WhileStatement: checkLoop,
+            DoWhileStatement: checkLoop,
+            ForStatement: checkLoop
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-continue.js

@@ -0,0 +1,32 @@
+/**
+ * @fileoverview Rule to flag use of continue statement
+ * @author Borislav Zhivkov
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `continue` statements",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+            ContinueStatement(node) {
+                context.report({ node, message: "Unexpected use of continue statement." });
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-control-regex.js

@@ -0,0 +1,126 @@
+/**
+ * @fileoverview Rule to forbid control charactes from regular expressions.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow control characters in regular expressions",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Get the regex expression
+         * @param {ASTNode} node node to evaluate
+         * @returns {*} Regex if found else null
+         * @private
+         */
+        function getRegExp(node) {
+            if (node.value instanceof RegExp) {
+                return node.value;
+            } else if (typeof node.value === "string") {
+
+                const parent = context.getAncestors().pop();
+
+                if ((parent.type === "NewExpression" || parent.type === "CallExpression") &&
+                    parent.callee.type === "Identifier" && parent.callee.name === "RegExp"
+                ) {
+
+                    // there could be an invalid regular expression string
+                    try {
+                        return new RegExp(node.value);
+                    } catch (ex) {
+                        return null;
+                    }
+                }
+            }
+
+            return null;
+        }
+
+
+        const controlChar = /[\x00-\x1f]/g; // eslint-disable-line no-control-regex
+        const consecutiveSlashes = /\\+/g;
+        const consecutiveSlashesAtEnd = /\\+$/g;
+        const stringControlChar = /\\x[01][0-9a-f]/ig;
+        const stringControlCharWithoutSlash = /x[01][0-9a-f]/ig;
+
+        /**
+         * Return a list of the control characters in the given regex string
+         * @param {string} regexStr regex as string to check
+         * @returns {array} returns a list of found control characters on given string
+         * @private
+         */
+        function getControlCharacters(regexStr) {
+
+            // check control characters, if RegExp object used
+            const controlChars = regexStr.match(controlChar) || [];
+
+            let stringControlChars = [];
+
+            // check substr, if regex literal used
+            const subStrIndex = regexStr.search(stringControlChar);
+
+            if (subStrIndex > -1) {
+
+                // is it escaped, check backslash count
+                const possibleEscapeCharacters = regexStr.slice(0, subStrIndex).match(consecutiveSlashesAtEnd);
+
+                const hasControlChars = possibleEscapeCharacters === null || !(possibleEscapeCharacters[0].length % 2);
+
+                if (hasControlChars) {
+                    stringControlChars = regexStr.slice(subStrIndex, -1)
+                        .split(consecutiveSlashes)
+                        .filter(Boolean)
+                        .map(x => {
+                            const match = x.match(stringControlCharWithoutSlash) || [x];
+
+                            return `\\${match[0]}`;
+                        });
+                }
+            }
+
+            return controlChars.map(x => {
+                const hexCode = `0${x.charCodeAt(0).toString(16)}`.slice(-2);
+
+                return `\\x${hexCode}`;
+            }).concat(stringControlChars);
+        }
+
+        return {
+            Literal(node) {
+                const regex = getRegExp(node);
+
+                if (regex) {
+                    const computedValue = regex.toString();
+
+                    const controlCharacters = getControlCharacters(computedValue);
+
+                    if (controlCharacters.length > 0) {
+                        context.report({
+                            node,
+                            message: "Unexpected control character(s) in regular expression: {{controlChars}}.",
+                            data: {
+                                controlChars: controlCharacters.join(", ")
+                            }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-debugger.js

@@ -0,0 +1,32 @@
+/**
+ * @fileoverview Rule to flag use of a debugger statement
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow the use of `debugger`",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+            DebuggerStatement(node) {
+                context.report({ node, message: "Unexpected 'debugger' statement." });
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-delete-var.js

@@ -0,0 +1,35 @@
+/**
+ * @fileoverview Rule to flag when deleting variables
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow deleting variables",
+            category: "Variables",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+
+            UnaryExpression(node) {
+                if (node.operator === "delete" && node.argument.type === "Identifier") {
+                    context.report({ node, message: "Variables should not be deleted." });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-div-regex.js

@@ -0,0 +1,38 @@
+/**
+ * @fileoverview Rule to check for ambiguous div operator in regexes
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow division operators explicitly at the beginning of regular expressions",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        return {
+
+            Literal(node) {
+                const token = sourceCode.getFirstToken(node);
+
+                if (token.type === "RegularExpression" && token.value[1] === "=") {
+                    context.report({ node, message: "A regular expression literal can be confused with '/='." });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-dupe-args.js

@@ -0,0 +1,73 @@
+/**
+ * @fileoverview Rule to flag duplicate arguments
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow duplicate arguments in `function` definitions",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks whether or not a given definition is a parameter's.
+         * @param {escope.DefEntry} def - A definition to check.
+         * @returns {boolean} `true` if the definition is a parameter's.
+         */
+        function isParameter(def) {
+            return def.type === "Parameter";
+        }
+
+        /**
+         * Determines if a given node has duplicate parameters.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkParams(node) {
+            const variables = context.getDeclaredVariables(node);
+
+            for (let i = 0; i < variables.length; ++i) {
+                const variable = variables[i];
+
+                // Checks and reports duplications.
+                const defs = variable.defs.filter(isParameter);
+
+                if (defs.length >= 2) {
+                    context.report({
+                        node,
+                        message: "Duplicate param '{{name}}'.",
+                        data: { name: variable.name }
+                    });
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: checkParams,
+            FunctionExpression: checkParams
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-dupe-class-members.js

@@ -0,0 +1,109 @@
+/**
+ * @fileoverview A rule to disallow duplicate name in class members.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow duplicate class members",
+            category: "ECMAScript 6",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        let stack = [];
+
+        /**
+         * Gets state of a given member name.
+         * @param {string} name - A name of a member.
+         * @param {boolean} isStatic - A flag which specifies that is a static member.
+         * @returns {Object} A state of a given member name.
+         *   - retv.init {boolean} A flag which shows the name is declared as normal member.
+         *   - retv.get {boolean} A flag which shows the name is declared as getter.
+         *   - retv.set {boolean} A flag which shows the name is declared as setter.
+         */
+        function getState(name, isStatic) {
+            const stateMap = stack[stack.length - 1];
+            const key = `$${name}`; // to avoid "__proto__".
+
+            if (!stateMap[key]) {
+                stateMap[key] = {
+                    nonStatic: { init: false, get: false, set: false },
+                    static: { init: false, get: false, set: false }
+                };
+            }
+
+            return stateMap[key][isStatic ? "static" : "nonStatic"];
+        }
+
+        /**
+         * Gets the name text of a given node.
+         *
+         * @param {ASTNode} node - A node to get the name.
+         * @returns {string} The name text of the node.
+         */
+        function getName(node) {
+            switch (node.type) {
+                case "Identifier": return node.name;
+                case "Literal": return String(node.value);
+
+                /* istanbul ignore next: syntax error */
+                default: return "";
+            }
+        }
+
+        return {
+
+            // Initializes the stack of state of member declarations.
+            Program() {
+                stack = [];
+            },
+
+            // Initializes state of member declarations for the class.
+            ClassBody() {
+                stack.push(Object.create(null));
+            },
+
+            // Disposes the state for the class.
+            "ClassBody:exit"() {
+                stack.pop();
+            },
+
+            // Reports the node if its name has been declared already.
+            MethodDefinition(node) {
+                if (node.computed) {
+                    return;
+                }
+
+                const name = getName(node.key);
+                const state = getState(name, node.static);
+                let isDuplicate = false;
+
+                if (node.kind === "get") {
+                    isDuplicate = (state.init || state.get);
+                    state.get = true;
+                } else if (node.kind === "set") {
+                    isDuplicate = (state.init || state.set);
+                    state.set = true;
+                } else {
+                    isDuplicate = (state.init || state.get || state.set);
+                    state.init = true;
+                }
+
+                if (isDuplicate) {
+                    context.report({ node, message: "Duplicate name '{{name}}'.", data: { name } });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-dupe-keys.js

@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Rule to flag use of duplicate keys in an object.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const GET_KIND = /^(?:init|get)$/;
+const SET_KIND = /^(?:init|set)$/;
+
+/**
+ * The class which stores properties' information of an object.
+ */
+class ObjectInfo {
+
+    /**
+     * @param {ObjectInfo|null} upper - The information of the outer object.
+     * @param {ASTNode} node - The ObjectExpression node of this information.
+     */
+    constructor(upper, node) {
+        this.upper = upper;
+        this.node = node;
+        this.properties = new Map();
+    }
+
+    /**
+     * Gets the information of the given Property node.
+     * @param {ASTNode} node - The Property node to get.
+     * @returns {{get: boolean, set: boolean}} The information of the property.
+     */
+    getPropertyInfo(node) {
+        const name = astUtils.getStaticPropertyName(node);
+
+        if (!this.properties.has(name)) {
+            this.properties.set(name, { get: false, set: false });
+        }
+        return this.properties.get(name);
+    }
+
+    /**
+     * Checks whether the given property has been defined already or not.
+     * @param {ASTNode} node - The Property node to check.
+     * @returns {boolean} `true` if the property has been defined.
+     */
+    isPropertyDefined(node) {
+        const entry = this.getPropertyInfo(node);
+
+        return (
+            (GET_KIND.test(node.kind) && entry.get) ||
+            (SET_KIND.test(node.kind) && entry.set)
+        );
+    }
+
+    /**
+     * Defines the given property.
+     * @param {ASTNode} node - The Property node to define.
+     * @returns {void}
+     */
+    defineProperty(node) {
+        const entry = this.getPropertyInfo(node);
+
+        if (GET_KIND.test(node.kind)) {
+            entry.get = true;
+        }
+        if (SET_KIND.test(node.kind)) {
+            entry.set = true;
+        }
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow duplicate keys in object literals",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        let info = null;
+
+        return {
+            ObjectExpression(node) {
+                info = new ObjectInfo(info, node);
+            },
+            "ObjectExpression:exit"() {
+                info = info.upper;
+            },
+
+            Property(node) {
+                const name = astUtils.getStaticPropertyName(node);
+
+                // Skip destructuring.
+                if (node.parent.type !== "ObjectExpression") {
+                    return;
+                }
+
+                // Skip if the name is not static.
+                if (!name) {
+                    return;
+                }
+
+                // Reports if the name is defined already.
+                if (info.isPropertyDefined(node)) {
+                    context.report({
+                        node: info.node,
+                        loc: node.key.loc,
+                        message: "Duplicate key '{{name}}'.",
+                        data: { name }
+                    });
+                }
+
+                // Update info.
+                info.defineProperty(node);
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-duplicate-case.js

@@ -0,0 +1,43 @@
+/**
+ * @fileoverview Rule to disallow a duplicate case label.
+ * @author Dieter Oberkofler
+ * @author Burak Yigit Kaya
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow duplicate case labels",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        return {
+            SwitchStatement(node) {
+                const mapping = {};
+
+                node.cases.forEach(switchCase => {
+                    const key = sourceCode.getText(switchCase.test);
+
+                    if (mapping[key]) {
+                        context.report({ node: switchCase, message: "Duplicate case label." });
+                    } else {
+                        mapping[key] = switchCase;
+                    }
+                });
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-duplicate-imports.js

@@ -0,0 +1,137 @@
+/**
+ * @fileoverview Restrict usage of duplicate imports.
+ * @author Simen Bekkhus
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the name of the module imported or re-exported.
+ *
+ * @param {ASTNode} node - A node to get.
+ * @returns {string} the name of the module, or empty string if no name.
+ */
+function getValue(node) {
+    if (node && node.source && node.source.value) {
+        return node.source.value.trim();
+    }
+
+    return "";
+}
+
+/**
+ * Checks if the name of the import or export exists in the given array, and reports if so.
+ *
+ * @param {RuleContext} context - The ESLint rule context object.
+ * @param {ASTNode} node - A node to get.
+ * @param {string} value - The name of the imported or exported module.
+ * @param {string[]} array - The array containing other imports or exports in the file.
+ * @param {string} message - A message to be reported after the name of the module
+ *
+ * @returns {void} No return value
+ */
+function checkAndReport(context, node, value, array, message) {
+    if (array.indexOf(value) !== -1) {
+        context.report({
+            node,
+            message: "'{{module}}' {{message}}",
+            data: {
+                module: value,
+                message
+            }
+        });
+    }
+}
+
+/**
+ * @callback nodeCallback
+ * @param {ASTNode} node - A node to handle.
+ */
+
+/**
+ * Returns a function handling the imports of a given file
+ *
+ * @param {RuleContext} context - The ESLint rule context object.
+ * @param {boolean} includeExports - Whether or not to check for exports in addition to imports.
+ * @param {string[]} importsInFile - The array containing other imports in the file.
+ * @param {string[]} exportsInFile - The array containing other exports in the file.
+ *
+ * @returns {nodeCallback} A function passed to ESLint to handle the statement.
+ */
+function handleImports(context, includeExports, importsInFile, exportsInFile) {
+    return function(node) {
+        const value = getValue(node);
+
+        if (value) {
+            checkAndReport(context, node, value, importsInFile, "import is duplicated.");
+
+            if (includeExports) {
+                checkAndReport(context, node, value, exportsInFile, "import is duplicated as export.");
+            }
+
+            importsInFile.push(value);
+        }
+    };
+}
+
+/**
+ * Returns a function handling the exports of a given file
+ *
+ * @param {RuleContext} context - The ESLint rule context object.
+ * @param {string[]} importsInFile - The array containing other imports in the file.
+ * @param {string[]} exportsInFile - The array containing other exports in the file.
+ *
+ * @returns {nodeCallback} A function passed to ESLint to handle the statement.
+ */
+function handleExports(context, importsInFile, exportsInFile) {
+    return function(node) {
+        const value = getValue(node);
+
+        if (value) {
+            checkAndReport(context, node, value, exportsInFile, "export is duplicated.");
+            checkAndReport(context, node, value, importsInFile, "export is duplicated as import.");
+
+            exportsInFile.push(value);
+        }
+    };
+}
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow duplicate module imports",
+            category: "ECMAScript 6",
+            recommended: false
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                includeExports: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+
+    create(context) {
+        const includeExports = (context.options[0] || {}).includeExports,
+            importsInFile = [],
+            exportsInFile = [];
+
+        const handlers = {
+            ImportDeclaration: handleImports(context, includeExports, importsInFile, exportsInFile)
+        };
+
+        if (includeExports) {
+            handlers.ExportNamedDeclaration = handleExports(context, importsInFile, exportsInFile);
+            handlers.ExportAllDeclaration = handleExports(context, importsInFile, exportsInFile);
+        }
+
+        return handlers;
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-else-return.js

@@ -0,0 +1,235 @@
+/**
+ * @fileoverview Rule to flag `else` after a `return` in `if`
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+const FixTracker = require("../util/fix-tracker");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `else` blocks after `return` statements in `if` statements",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Display the context report if rule is violated
+         *
+         * @param {Node} node The 'else' node
+         * @returns {void}
+         */
+        function displayReport(node) {
+            context.report({
+                node,
+                message: "Unnecessary 'else' after 'return'.",
+                fix: fixer => {
+                    const sourceCode = context.getSourceCode();
+                    const startToken = sourceCode.getFirstToken(node);
+                    const elseToken = sourceCode.getTokenBefore(startToken);
+                    const source = sourceCode.getText(node);
+                    const lastIfToken = sourceCode.getTokenBefore(elseToken);
+                    let fixedSource, firstTokenOfElseBlock;
+
+                    if (startToken.type === "Punctuator" && startToken.value === "{") {
+                        firstTokenOfElseBlock = sourceCode.getTokenAfter(startToken);
+                    } else {
+                        firstTokenOfElseBlock = startToken;
+                    }
+
+                    // If the if block does not have curly braces and does not end in a semicolon
+                    // and the else block starts with (, [, /, +, ` or -, then it is not
+                    // safe to remove the else keyword, because ASI will not add a semicolon
+                    // after the if block
+                    const ifBlockMaybeUnsafe = node.parent.consequent.type !== "BlockStatement" && lastIfToken.value !== ";";
+                    const elseBlockUnsafe = /^[([/+`-]/.test(firstTokenOfElseBlock.value);
+
+                    if (ifBlockMaybeUnsafe && elseBlockUnsafe) {
+                        return null;
+                    }
+
+                    const endToken = sourceCode.getLastToken(node);
+                    const lastTokenOfElseBlock = sourceCode.getTokenBefore(endToken);
+
+                    if (lastTokenOfElseBlock.value !== ";") {
+                        const nextToken = sourceCode.getTokenAfter(endToken);
+
+                        const nextTokenUnsafe = nextToken && /^[([/+`-]/.test(nextToken.value);
+                        const nextTokenOnSameLine = nextToken && nextToken.loc.start.line === lastTokenOfElseBlock.loc.start.line;
+
+                        // If the else block contents does not end in a semicolon,
+                        // and the else block starts with (, [, /, +, ` or -, then it is not
+                        // safe to remove the else block, because ASI will not add a semicolon
+                        // after the remaining else block contents
+                        if (nextTokenUnsafe || (nextTokenOnSameLine && nextToken.value !== "}")) {
+                            return null;
+                        }
+                    }
+
+                    if (startToken.type === "Punctuator" && startToken.value === "{") {
+                        fixedSource = source.slice(1, -1);
+                    } else {
+                        fixedSource = source;
+                    }
+
+                    // Extend the replacement range to include the entire
+                    // function to avoid conflicting with no-useless-return.
+                    // https://github.com/eslint/eslint/issues/8026
+                    return new FixTracker(fixer, sourceCode)
+                        .retainEnclosingFunction(node)
+                        .replaceTextRange([elseToken.start, node.end], fixedSource);
+                }
+            });
+        }
+
+        /**
+         * Check to see if the node is a ReturnStatement
+         *
+         * @param {Node} node The node being evaluated
+         * @returns {boolean} True if node is a return
+         */
+        function checkForReturn(node) {
+            return node.type === "ReturnStatement";
+        }
+
+        /**
+         * Naive return checking, does not iterate through the whole
+         * BlockStatement because we make the assumption that the ReturnStatement
+         * will be the last node in the body of the BlockStatement.
+         *
+         * @param {Node} node The consequent/alternate node
+         * @returns {boolean} True if it has a return
+         */
+        function naiveHasReturn(node) {
+            if (node.type === "BlockStatement") {
+                const body = node.body,
+                    lastChildNode = body[body.length - 1];
+
+                return lastChildNode && checkForReturn(lastChildNode);
+            }
+            return checkForReturn(node);
+        }
+
+        /**
+         * Check to see if the node is valid for evaluation,
+         * meaning it has an else and not an else-if
+         *
+         * @param {Node} node The node being evaluated
+         * @returns {boolean} True if the node is valid
+         */
+        function hasElse(node) {
+            return node.alternate && node.consequent && node.alternate.type !== "IfStatement";
+        }
+
+        /**
+         * If the consequent is an IfStatement, check to see if it has an else
+         * and both its consequent and alternate path return, meaning this is
+         * a nested case of rule violation.  If-Else not considered currently.
+         *
+         * @param {Node} node The consequent node
+         * @returns {boolean} True if this is a nested rule violation
+         */
+        function checkForIf(node) {
+            return node.type === "IfStatement" && hasElse(node) &&
+                naiveHasReturn(node.alternate) && naiveHasReturn(node.consequent);
+        }
+
+        /**
+         * Check the consequent/body node to make sure it is not
+         * a ReturnStatement or an IfStatement that returns on both
+         * code paths.
+         *
+         * @param {Node} node The consequent or body node
+         * @param {Node} alternate The alternate node
+         * @returns {boolean} `true` if it is a Return/If node that always returns.
+         */
+        function checkForReturnOrIf(node) {
+            return checkForReturn(node) || checkForIf(node);
+        }
+
+
+        /**
+         * Check whether a node returns in every codepath.
+         * @param {Node} node The node to be checked
+         * @returns {boolean} `true` if it returns on every codepath.
+         */
+        function alwaysReturns(node) {
+            if (node.type === "BlockStatement") {
+
+                // If we have a BlockStatement, check each consequent body node.
+                return node.body.some(checkForReturnOrIf);
+            }
+
+            /*
+             * If not a block statement, make sure the consequent isn't a
+             * ReturnStatement or an IfStatement with returns on both paths.
+             */
+            return checkForReturnOrIf(node);
+        }
+
+        /**
+         * Check the if statement
+         * @returns {void}
+         * @param {Node} node The node for the if statement to check
+         * @private
+         */
+        function IfStatement(node) {
+            const parent = context.getAncestors().pop();
+            let consequents,
+                alternate;
+
+            /*
+             * Fixing this would require splitting one statement into two, so no error should
+             * be reported if this node is in a position where only one statement is allowed.
+             */
+            if (!astUtils.STATEMENT_LIST_PARENTS.has(parent.type)) {
+                return;
+            }
+
+            for (consequents = []; node.type === "IfStatement"; node = node.alternate) {
+                if (!node.alternate) {
+                    return;
+                }
+                consequents.push(node.consequent);
+                alternate = node.alternate;
+            }
+
+            if (consequents.every(alwaysReturns)) {
+                displayReport(alternate);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            "IfStatement:exit": IfStatement
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-empty-character-class.js

@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Rule to flag the use of empty character classes in regular expressions
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/*
+plain-English description of the following regexp:
+0. `^` fix the match at the beginning of the string
+1. `\/`: the `/` that begins the regexp
+2. `([^\\[]|\\.|\[([^\\\]]|\\.)+\])*`: regexp contents; 0 or more of the following
+  2.0. `[^\\[]`: any character that's not a `\` or a `[` (anything but escape sequences and character classes)
+  2.1. `\\.`: an escape sequence
+  2.2. `\[([^\\\]]|\\.)+\]`: a character class that isn't empty
+3. `\/` the `/` that ends the regexp
+4. `[gimuy]*`: optional regexp flags
+5. `$`: fix the match at the end of the string
+*/
+const regex = /^\/([^\\[]|\\.|\[([^\\\]]|\\.)+])*\/[gimuy]*$/;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow empty character classes in regular expressions",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        return {
+
+            Literal(node) {
+                const token = sourceCode.getFirstToken(node);
+
+                if (token.type === "RegularExpression" && !regex.test(token.value)) {
+                    context.report({ node, message: "Empty class." });
+                }
+            }
+
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-empty-function.js

@@ -0,0 +1,156 @@
+/**
+ * @fileoverview Rule to disallow empty functions.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const ALLOW_OPTIONS = Object.freeze([
+    "functions",
+    "arrowFunctions",
+    "generatorFunctions",
+    "methods",
+    "generatorMethods",
+    "getters",
+    "setters",
+    "constructors"
+]);
+
+/**
+ * Gets the kind of a given function node.
+ *
+ * @param {ASTNode} node - A function node to get. This is one of
+ *      an ArrowFunctionExpression, a FunctionDeclaration, or a
+ *      FunctionExpression.
+ * @returns {string} The kind of the function. This is one of "functions",
+ *      "arrowFunctions", "generatorFunctions", "asyncFunctions", "methods",
+ *      "generatorMethods", "asyncMethods", "getters", "setters", and
+ *      "constructors".
+ */
+function getKind(node) {
+    const parent = node.parent;
+    let kind = "";
+
+    if (node.type === "ArrowFunctionExpression") {
+        return "arrowFunctions";
+    }
+
+    // Detects main kind.
+    if (parent.type === "Property") {
+        if (parent.kind === "get") {
+            return "getters";
+        }
+        if (parent.kind === "set") {
+            return "setters";
+        }
+        kind = parent.method ? "methods" : "functions";
+
+    } else if (parent.type === "MethodDefinition") {
+        if (parent.kind === "get") {
+            return "getters";
+        }
+        if (parent.kind === "set") {
+            return "setters";
+        }
+        if (parent.kind === "constructor") {
+            return "constructors";
+        }
+        kind = "methods";
+
+    } else {
+        kind = "functions";
+    }
+
+    // Detects prefix.
+    let prefix = "";
+
+    if (node.generator) {
+        prefix = "generator";
+    } else if (node.async) {
+        prefix = "async";
+    } else {
+        return kind;
+    }
+    return prefix + kind[0].toUpperCase() + kind.slice(1);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow empty functions",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: { enum: ALLOW_OPTIONS },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports a given function node if the node matches the following patterns.
+         *
+         * - Not allowed by options.
+         * - The body is empty.
+         * - The body doesn't have any comments.
+         *
+         * @param {ASTNode} node - A function node to report. This is one of
+         *      an ArrowFunctionExpression, a FunctionDeclaration, or a
+         *      FunctionExpression.
+         * @returns {void}
+         */
+        function reportIfEmpty(node) {
+            const kind = getKind(node);
+            const name = astUtils.getFunctionNameWithKind(node);
+
+            if (allowed.indexOf(kind) === -1 &&
+                node.body.type === "BlockStatement" &&
+                node.body.body.length === 0 &&
+                sourceCode.getComments(node.body).trailing.length === 0
+            ) {
+                context.report({
+                    node,
+                    loc: node.body.loc.start,
+                    message: "Unexpected empty {{name}}.",
+                    data: { name }
+                });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: reportIfEmpty,
+            FunctionDeclaration: reportIfEmpty,
+            FunctionExpression: reportIfEmpty
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-empty-pattern.js

@@ -0,0 +1,36 @@
+/**
+ * @fileoverview Rule to disallow an empty pattern
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow empty destructuring patterns",
+            category: "Best Practices",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        return {
+            ObjectPattern(node) {
+                if (node.properties.length === 0) {
+                    context.report({ node, message: "Unexpected empty object pattern." });
+                }
+            },
+            ArrayPattern(node) {
+                if (node.elements.length === 0) {
+                    context.report({ node, message: "Unexpected empty array pattern." });
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-empty.js

@@ -0,0 +1,78 @@
+/**
+ * @fileoverview Rule to flag use of an empty block statement
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow empty block statements",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowEmptyCatch: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {},
+            allowEmptyCatch = options.allowEmptyCatch || false;
+
+        const sourceCode = context.getSourceCode();
+
+        return {
+            BlockStatement(node) {
+
+                // if the body is not empty, we can just return immediately
+                if (node.body.length !== 0) {
+                    return;
+                }
+
+                // a function is generally allowed to be empty
+                if (astUtils.isFunction(node.parent)) {
+                    return;
+                }
+
+                if (allowEmptyCatch && node.parent.type === "CatchClause") {
+                    return;
+                }
+
+                // any other block is only allowed to be empty, if it contains a comment
+                if (sourceCode.getComments(node).trailing.length > 0) {
+                    return;
+                }
+
+                context.report({ node, message: "Empty block statement." });
+            },
+
+            SwitchStatement(node) {
+
+                if (typeof node.cases === "undefined" || node.cases.length === 0) {
+                    context.report({ node, message: "Empty switch statement." });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-eq-null.js

@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Rule to flag comparisons to null without a type-checking
+ * operator.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow `null` comparisons without type-checking operators",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+
+            BinaryExpression(node) {
+                const badOperator = node.operator === "==" || node.operator === "!=";
+
+                if (node.right.type === "Literal" && node.right.raw === "null" && badOperator ||
+                        node.left.type === "Literal" && node.left.raw === "null" && badOperator) {
+                    context.report({ node, message: "Use ‘===’ to compare with ‘null’." });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-eval.js

@@ -0,0 +1,308 @@
+/**
+ * @fileoverview Rule to flag use of eval() statement
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const candidatesOfGlobalObject = Object.freeze([
+    "global",
+    "window"
+]);
+
+/**
+ * Checks a given node is a Identifier node of the specified name.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - A name to check.
+ * @returns {boolean} `true` if the node is a Identifier node of the name.
+ */
+function isIdentifier(node, name) {
+    return node.type === "Identifier" && node.name === name;
+}
+
+/**
+ * Checks a given node is a Literal node of the specified string value.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - A name to check.
+ * @returns {boolean} `true` if the node is a Literal node of the name.
+ */
+function isConstant(node, name) {
+    switch (node.type) {
+        case "Literal":
+            return node.value === name;
+
+        case "TemplateLiteral":
+            return (
+                node.expressions.length === 0 &&
+                node.quasis[0].value.cooked === name
+            );
+
+        default:
+            return false;
+    }
+}
+
+/**
+ * Checks a given node is a MemberExpression node which has the specified name's
+ * property.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - A name to check.
+ * @returns {boolean} `true` if the node is a MemberExpression node which has
+ *      the specified name's property
+ */
+function isMember(node, name) {
+    return (
+        node.type === "MemberExpression" &&
+        (node.computed ? isConstant : isIdentifier)(node.property, name)
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow the use of `eval()`",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowIndirect: { type: "boolean" }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const allowIndirect = Boolean(
+            context.options[0] &&
+            context.options[0].allowIndirect
+        );
+        const sourceCode = context.getSourceCode();
+        let funcInfo = null;
+
+        /**
+         * Pushs a variable scope (Program or Function) information to the stack.
+         *
+         * This is used in order to check whether or not `this` binding is a
+         * reference to the global object.
+         *
+         * @param {ASTNode} node - A node of the scope. This is one of Program,
+         *      FunctionDeclaration, FunctionExpression, and ArrowFunctionExpression.
+         * @returns {void}
+         */
+        function enterVarScope(node) {
+            const strict = context.getScope().isStrict;
+
+            funcInfo = {
+                upper: funcInfo,
+                node,
+                strict,
+                defaultThis: false,
+                initialized: strict
+            };
+        }
+
+        /**
+         * Pops a variable scope from the stack.
+         *
+         * @returns {void}
+         */
+        function exitVarScope() {
+            funcInfo = funcInfo.upper;
+        }
+
+        /**
+         * Reports a given node.
+         *
+         * `node` is `Identifier` or `MemberExpression`.
+         * The parent of `node` might be `CallExpression`.
+         *
+         * The location of the report is always `eval` `Identifier` (or possibly
+         * `Literal`). The type of the report is `CallExpression` if the parent is
+         * `CallExpression`. Otherwise, it's the given node type.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            let locationNode = node;
+            const parent = node.parent;
+
+            if (node.type === "MemberExpression") {
+                locationNode = node.property;
+            }
+            if (parent.type === "CallExpression" && parent.callee === node) {
+                node = parent;
+            }
+
+            context.report({
+                node,
+                loc: locationNode.loc.start,
+                message: "eval can be harmful."
+            });
+        }
+
+        /**
+         * Reports accesses of `eval` via the global object.
+         *
+         * @param {escope.Scope} globalScope - The global scope.
+         * @returns {void}
+         */
+        function reportAccessingEvalViaGlobalObject(globalScope) {
+            for (let i = 0; i < candidatesOfGlobalObject.length; ++i) {
+                const name = candidatesOfGlobalObject[i];
+                const variable = astUtils.getVariableByName(globalScope, name);
+
+                if (!variable) {
+                    continue;
+                }
+
+                const references = variable.references;
+
+                for (let j = 0; j < references.length; ++j) {
+                    const identifier = references[j].identifier;
+                    let node = identifier.parent;
+
+                    // To detect code like `window.window.eval`.
+                    while (isMember(node, name)) {
+                        node = node.parent;
+                    }
+
+                    // Reports.
+                    if (isMember(node, "eval")) {
+                        report(node);
+                    }
+                }
+            }
+        }
+
+        /**
+         * Reports all accesses of `eval` (excludes direct calls to eval).
+         *
+         * @param {escope.Scope} globalScope - The global scope.
+         * @returns {void}
+         */
+        function reportAccessingEval(globalScope) {
+            const variable = astUtils.getVariableByName(globalScope, "eval");
+
+            if (!variable) {
+                return;
+            }
+
+            const references = variable.references;
+
+            for (let i = 0; i < references.length; ++i) {
+                const reference = references[i];
+                const id = reference.identifier;
+
+                if (id.name === "eval" && !astUtils.isCallee(id)) {
+
+                    // Is accessing to eval (excludes direct calls to eval)
+                    report(id);
+                }
+            }
+        }
+
+        if (allowIndirect) {
+
+            // Checks only direct calls to eval. It's simple!
+            return {
+                "CallExpression:exit"(node) {
+                    const callee = node.callee;
+
+                    if (isIdentifier(callee, "eval")) {
+                        report(callee);
+                    }
+                }
+            };
+        }
+
+        return {
+            "CallExpression:exit"(node) {
+                const callee = node.callee;
+
+                if (isIdentifier(callee, "eval")) {
+                    report(callee);
+                }
+            },
+
+            Program(node) {
+                const scope = context.getScope(),
+                    features = context.parserOptions.ecmaFeatures || {},
+                    strict =
+                        scope.isStrict ||
+                        node.sourceType === "module" ||
+                        (features.globalReturn && scope.childScopes[0].isStrict);
+
+                funcInfo = {
+                    upper: null,
+                    node,
+                    strict,
+                    defaultThis: true,
+                    initialized: true
+                };
+            },
+
+            "Program:exit"() {
+                const globalScope = context.getScope();
+
+                exitVarScope();
+                reportAccessingEval(globalScope);
+                reportAccessingEvalViaGlobalObject(globalScope);
+            },
+
+            FunctionDeclaration: enterVarScope,
+            "FunctionDeclaration:exit": exitVarScope,
+            FunctionExpression: enterVarScope,
+            "FunctionExpression:exit": exitVarScope,
+            ArrowFunctionExpression: enterVarScope,
+            "ArrowFunctionExpression:exit": exitVarScope,
+
+            ThisExpression(node) {
+                if (!isMember(node.parent, "eval")) {
+                    return;
+                }
+
+                /*
+                 * `this.eval` is found.
+                 * Checks whether or not the value of `this` is the global object.
+                 */
+                if (!funcInfo.initialized) {
+                    funcInfo.initialized = true;
+                    funcInfo.defaultThis = astUtils.isDefaultThisBinding(
+                        funcInfo.node,
+                        sourceCode
+                    );
+                }
+
+                if (!funcInfo.strict && funcInfo.defaultThis) {
+
+                    // `this.eval` is possible built-in `eval`.
+                    report(node.parent);
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-ex-assign.js

@@ -0,0 +1,45 @@
+/**
+ * @fileoverview Rule to flag assignment of the exception parameter
+ * @author Stephen Murray <spmurrayzzz>
+ */
+
+"use strict";
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow reassigning exceptions in `catch` clauses",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable - A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, message: "Do not assign to the exception parameter." });
+            });
+        }
+
+        return {
+            CatchClause(node) {
+                context.getDeclaredVariables(node).forEach(checkVariable);
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extend-native.js

@@ -0,0 +1,117 @@
+/**
+ * @fileoverview Rule to flag adding properties to native object's prototypes.
+ * @author David Nelson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const globals = require("globals");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow extending native types",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const config = context.options[0] || {};
+        const exceptions = config.exceptions || [];
+        let modifiedBuiltins = Object.keys(globals.builtin).filter(builtin => builtin[0].toUpperCase() === builtin[0]);
+
+        if (exceptions.length) {
+            modifiedBuiltins = modifiedBuiltins.filter(builtIn => exceptions.indexOf(builtIn) === -1);
+        }
+
+        return {
+
+            // handle the Array.prototype.extra style case
+            AssignmentExpression(node) {
+                const lhs = node.left;
+
+                if (lhs.type !== "MemberExpression" || lhs.object.type !== "MemberExpression") {
+                    return;
+                }
+
+                const affectsProto = lhs.object.computed
+                    ? lhs.object.property.type === "Literal" && lhs.object.property.value === "prototype"
+                    : lhs.object.property.name === "prototype";
+
+                if (!affectsProto) {
+                    return;
+                }
+
+                modifiedBuiltins.forEach(builtin => {
+                    if (lhs.object.object.name === builtin) {
+                        context.report({
+                            node,
+                            message: "{{builtin}} prototype is read only, properties should not be added.",
+                            data: {
+                                builtin
+                            }
+                        });
+                    }
+                });
+            },
+
+            // handle the Object.definePropert[y|ies](Array.prototype) case
+            CallExpression(node) {
+
+                const callee = node.callee;
+
+                // only worry about Object.definePropert[y|ies]
+                if (callee.type === "MemberExpression" &&
+                    callee.object.name === "Object" &&
+                    (callee.property.name === "defineProperty" || callee.property.name === "defineProperties")) {
+
+                    // verify the object being added to is a native prototype
+                    const subject = node.arguments[0];
+                    const object = subject && subject.object;
+
+                    if (object &&
+                        object.type === "Identifier" &&
+                        (modifiedBuiltins.indexOf(object.name) > -1) &&
+                        subject.property.name === "prototype") {
+
+                        context.report({
+                            node,
+                            message: "{{objectName}} prototype is read only, properties should not be added.",
+                            data: {
+                                objectName: object.name
+                            }
+                        });
+                    }
+                }
+
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extra-bind.js

@@ -0,0 +1,145 @@
+/**
+ * @fileoverview Rule to flag unnecessary bind calls
+ * @author Bence Dányi <bence@danyi.me>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow unnecessary calls to `.bind()`",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        let scopeInfo = null;
+
+        /**
+         * Reports a given function node.
+         *
+         * @param {ASTNode} node - A node to report. This is a FunctionExpression or
+         *      an ArrowFunctionExpression.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node: node.parent.parent,
+                message: "The function binding is unnecessary.",
+                loc: node.parent.property.loc.start,
+                fix(fixer) {
+                    const firstTokenToRemove = context.getSourceCode()
+                        .getFirstTokenBetween(node.parent.object, node.parent.property, astUtils.isNotClosingParenToken);
+
+                    return fixer.removeRange([firstTokenToRemove.range[0], node.parent.parent.range[1]]);
+                }
+            });
+        }
+
+        /**
+         * Checks whether or not a given function node is the callee of `.bind()`
+         * method.
+         *
+         * e.g. `(function() {}.bind(foo))`
+         *
+         * @param {ASTNode} node - A node to report. This is a FunctionExpression or
+         *      an ArrowFunctionExpression.
+         * @returns {boolean} `true` if the node is the callee of `.bind()` method.
+         */
+        function isCalleeOfBindMethod(node) {
+            const parent = node.parent;
+            const grandparent = parent.parent;
+
+            return (
+                grandparent &&
+                grandparent.type === "CallExpression" &&
+                grandparent.callee === parent &&
+                grandparent.arguments.length === 1 &&
+                parent.type === "MemberExpression" &&
+                parent.object === node &&
+                astUtils.getStaticPropertyName(parent) === "bind"
+            );
+        }
+
+        /**
+         * Adds a scope information object to the stack.
+         *
+         * @param {ASTNode} node - A node to add. This node is a FunctionExpression
+         *      or a FunctionDeclaration node.
+         * @returns {void}
+         */
+        function enterFunction(node) {
+            scopeInfo = {
+                isBound: isCalleeOfBindMethod(node),
+                thisFound: false,
+                upper: scopeInfo
+            };
+        }
+
+        /**
+         * Removes the scope information object from the top of the stack.
+         * At the same time, this reports the function node if the function has
+         * `.bind()` and the `this` keywords found.
+         *
+         * @param {ASTNode} node - A node to remove. This node is a
+         *      FunctionExpression or a FunctionDeclaration node.
+         * @returns {void}
+         */
+        function exitFunction(node) {
+            if (scopeInfo.isBound && !scopeInfo.thisFound) {
+                report(node);
+            }
+
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Reports a given arrow function if the function is callee of `.bind()`
+         * method.
+         *
+         * @param {ASTNode} node - A node to report. This node is an
+         *      ArrowFunctionExpression.
+         * @returns {void}
+         */
+        function exitArrowFunction(node) {
+            if (isCalleeOfBindMethod(node)) {
+                report(node);
+            }
+        }
+
+        /**
+         * Set the mark as the `this` keyword was found in this scope.
+         *
+         * @returns {void}
+         */
+        function markAsThisFound() {
+            if (scopeInfo) {
+                scopeInfo.thisFound = true;
+            }
+        }
+
+        return {
+            "ArrowFunctionExpression:exit": exitArrowFunction,
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+            ThisExpression: markAsThisFound
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extra-boolean-cast.js

@@ -0,0 +1,122 @@
+/**
+ * @fileoverview Rule to flag unnecessary double negation in Boolean contexts
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow unnecessary boolean casts",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        // Node types which have a test which will coerce values to booleans.
+        const BOOLEAN_NODE_TYPES = [
+            "IfStatement",
+            "DoWhileStatement",
+            "WhileStatement",
+            "ConditionalExpression",
+            "ForStatement"
+        ];
+
+        /**
+         * Check if a node is in a context where its value would be coerced to a boolean at runtime.
+         *
+         * @param {Object} node The node
+         * @param {Object} parent Its parent
+         * @returns {boolean} If it is in a boolean context
+         */
+        function isInBooleanContext(node, parent) {
+            return (
+                (BOOLEAN_NODE_TYPES.indexOf(parent.type) !== -1 &&
+                    node === parent.test) ||
+
+                // !<bool>
+                (parent.type === "UnaryExpression" &&
+                    parent.operator === "!")
+            );
+        }
+
+
+        return {
+            UnaryExpression(node) {
+                const ancestors = context.getAncestors(),
+                    parent = ancestors.pop(),
+                    grandparent = ancestors.pop();
+
+                // Exit early if it's guaranteed not to match
+                if (node.operator !== "!" ||
+                        parent.type !== "UnaryExpression" ||
+                        parent.operator !== "!") {
+                    return;
+                }
+
+                if (isInBooleanContext(parent, grandparent) ||
+
+                    // Boolean(<bool>) and new Boolean(<bool>)
+                    ((grandparent.type === "CallExpression" || grandparent.type === "NewExpression") &&
+                        grandparent.callee.type === "Identifier" &&
+                        grandparent.callee.name === "Boolean")
+                ) {
+                    context.report({
+                        node,
+                        message: "Redundant double negation.",
+                        fix: fixer => fixer.replaceText(parent, sourceCode.getText(node.argument))
+                    });
+                }
+            },
+            CallExpression(node) {
+                const parent = node.parent;
+
+                if (node.callee.type !== "Identifier" || node.callee.name !== "Boolean") {
+                    return;
+                }
+
+                if (isInBooleanContext(node, parent)) {
+                    context.report({
+                        node,
+                        message: "Redundant Boolean call.",
+                        fix: fixer => {
+                            if (!node.arguments.length) {
+                                return fixer.replaceText(parent, "true");
+                            }
+
+                            if (node.arguments.length > 1 || node.arguments[0].type === "SpreadElement") {
+                                return null;
+                            }
+
+                            const argument = node.arguments[0];
+
+                            if (astUtils.getPrecedence(argument) < astUtils.getPrecedence(node.parent)) {
+                                return fixer.replaceText(node, `(${sourceCode.getText(argument)})`);
+                            }
+                            return fixer.replaceText(node, sourceCode.getText(argument));
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extra-label.js

@@ -0,0 +1,140 @@
+/**
+ * @fileoverview Rule to disallow unnecessary labels
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow unnecessary labels",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        let scopeInfo = null;
+
+        /**
+         * Creates a new scope with a breakable statement.
+         *
+         * @param {ASTNode} node - A node to create. This is a BreakableStatement.
+         * @returns {void}
+         */
+        function enterBreakableStatement(node) {
+            scopeInfo = {
+                label: node.parent.type === "LabeledStatement" ? node.parent.label : null,
+                breakable: true,
+                upper: scopeInfo
+            };
+        }
+
+        /**
+         * Removes the top scope of the stack.
+         *
+         * @returns {void}
+         */
+        function exitBreakableStatement() {
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Creates a new scope with a labeled statement.
+         *
+         * This ignores it if the body is a breakable statement.
+         * In this case it's handled in the `enterBreakableStatement` function.
+         *
+         * @param {ASTNode} node - A node to create. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function enterLabeledStatement(node) {
+            if (!astUtils.isBreakableStatement(node.body)) {
+                scopeInfo = {
+                    label: node.label,
+                    breakable: false,
+                    upper: scopeInfo
+                };
+            }
+        }
+
+        /**
+         * Removes the top scope of the stack.
+         *
+         * This ignores it if the body is a breakable statement.
+         * In this case it's handled in the `exitBreakableStatement` function.
+         *
+         * @param {ASTNode} node - A node. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function exitLabeledStatement(node) {
+            if (!astUtils.isBreakableStatement(node.body)) {
+                scopeInfo = scopeInfo.upper;
+            }
+        }
+
+        /**
+         * Reports a given control node if it's unnecessary.
+         *
+         * @param {ASTNode} node - A node. This is a BreakStatement or a
+         *      ContinueStatement.
+         * @returns {void}
+         */
+        function reportIfUnnecessary(node) {
+            if (!node.label) {
+                return;
+            }
+
+            const labelNode = node.label;
+
+            for (let info = scopeInfo; info !== null; info = info.upper) {
+                if (info.breakable || info.label && info.label.name === labelNode.name) {
+                    if (info.breakable && info.label && info.label.name === labelNode.name) {
+                        context.report({
+                            node: labelNode,
+                            message: "This label '{{name}}' is unnecessary.",
+                            data: labelNode,
+                            fix: fixer => fixer.removeRange([sourceCode.getFirstToken(node).range[1], labelNode.range[1]])
+                        });
+                    }
+                    return;
+                }
+            }
+        }
+
+        return {
+            WhileStatement: enterBreakableStatement,
+            "WhileStatement:exit": exitBreakableStatement,
+            DoWhileStatement: enterBreakableStatement,
+            "DoWhileStatement:exit": exitBreakableStatement,
+            ForStatement: enterBreakableStatement,
+            "ForStatement:exit": exitBreakableStatement,
+            ForInStatement: enterBreakableStatement,
+            "ForInStatement:exit": exitBreakableStatement,
+            ForOfStatement: enterBreakableStatement,
+            "ForOfStatement:exit": exitBreakableStatement,
+            SwitchStatement: enterBreakableStatement,
+            "SwitchStatement:exit": exitBreakableStatement,
+            LabeledStatement: enterLabeledStatement,
+            "LabeledStatement:exit": exitLabeledStatement,
+            BreakStatement: reportIfUnnecessary,
+            ContinueStatement: reportIfUnnecessary
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extra-parens.js

@@ -0,0 +1,664 @@
+/**
+ * @fileoverview Disallow parenthesising higher precedence subexpressions.
+ * @author Michael Ficarra
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils.js");
+const esUtils = require("esutils");
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow unnecessary parentheses",
+            category: "Possible Errors",
+            recommended: false
+        },
+
+        fixable: "code",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["functions"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["all"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                conditionalAssign: { type: "boolean" },
+                                nestedBinaryExpressions: { type: "boolean" },
+                                returnAssign: { type: "boolean" },
+                                ignoreJSX: { enum: ["none", "all", "single-line", "multi-line"] }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        const tokensToIgnore = new WeakSet();
+        const isParenthesised = astUtils.isParenthesised.bind(astUtils, sourceCode);
+        const precedence = astUtils.getPrecedence;
+        const ALL_NODES = context.options[0] !== "functions";
+        const EXCEPT_COND_ASSIGN = ALL_NODES && context.options[1] && context.options[1].conditionalAssign === false;
+        const NESTED_BINARY = ALL_NODES && context.options[1] && context.options[1].nestedBinaryExpressions === false;
+        const EXCEPT_RETURN_ASSIGN = ALL_NODES && context.options[1] && context.options[1].returnAssign === false;
+        const IGNORE_JSX = ALL_NODES && context.options[1] && context.options[1].ignoreJSX;
+        const PRECEDENCE_OF_ASSIGNMENT_EXPR = precedence({ type: "AssignmentExpression" });
+        const PRECEDENCE_OF_UPDATE_EXPR = precedence({ type: "UpdateExpression" });
+
+        /**
+         * Determines if this rule should be enforced for a node given the current configuration.
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the rule should be enforced for this node.
+         * @private
+         */
+        function ruleApplies(node) {
+            if (node.type === "JSXElement") {
+                const isSingleLine = node.loc.start.line === node.loc.end.line;
+
+                switch (IGNORE_JSX) {
+
+                    // Exclude this JSX element from linting
+                    case "all":
+                        return false;
+
+                    // Exclude this JSX element if it is multi-line element
+                    case "multi-line":
+                        return isSingleLine;
+
+                    // Exclude this JSX element if it is single-line element
+                    case "single-line":
+                        return !isSingleLine;
+
+                    // Nothing special to be done for JSX elements
+                    case "none":
+                        break;
+
+                    // no default
+                }
+            }
+
+            return ALL_NODES || node.type === "FunctionExpression" || node.type === "ArrowFunctionExpression";
+        }
+
+        /**
+         * Determines if a node is surrounded by parentheses twice.
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is doubly parenthesised.
+         * @private
+         */
+        function isParenthesisedTwice(node) {
+            const previousToken = sourceCode.getTokenBefore(node, 1),
+                nextToken = sourceCode.getTokenAfter(node, 1);
+
+            return isParenthesised(node) && previousToken && nextToken &&
+                astUtils.isOpeningParenToken(previousToken) && previousToken.range[1] <= node.range[0] &&
+                astUtils.isClosingParenToken(nextToken) && nextToken.range[0] >= node.range[1];
+        }
+
+        /**
+         * Determines if a node is surrounded by (potentially) invalid parentheses.
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is incorrectly parenthesised.
+         * @private
+         */
+        function hasExcessParens(node) {
+            return ruleApplies(node) && isParenthesised(node);
+        }
+
+        /**
+         * Determines if a node that is expected to be parenthesised is surrounded by
+         * (potentially) invalid extra parentheses.
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is has an unexpected extra pair of parentheses.
+         * @private
+         */
+        function hasDoubleExcessParens(node) {
+            return ruleApplies(node) && isParenthesisedTwice(node);
+        }
+
+        /**
+         * Determines if a node test expression is allowed to have a parenthesised assignment
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the assignment can be parenthesised.
+         * @private
+         */
+        function isCondAssignException(node) {
+            return EXCEPT_COND_ASSIGN && node.test.type === "AssignmentExpression";
+        }
+
+        /**
+         * Determines if a node is in a return statement
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is in a return statement.
+         * @private
+         */
+        function isInReturnStatement(node) {
+            while (node) {
+                if (node.type === "ReturnStatement" ||
+                        (node.type === "ArrowFunctionExpression" && node.body.type !== "BlockStatement")) {
+                    return true;
+                }
+                node = node.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a constructor function is newed-up with parens
+         * @param {ASTNode} newExpression - The NewExpression node to be checked.
+         * @returns {boolean} True if the constructor is called with parens.
+         * @private
+         */
+        function isNewExpressionWithParens(newExpression) {
+            const lastToken = sourceCode.getLastToken(newExpression);
+            const penultimateToken = sourceCode.getTokenBefore(lastToken);
+
+            return newExpression.arguments.length > 0 || astUtils.isOpeningParenToken(penultimateToken) && astUtils.isClosingParenToken(lastToken);
+        }
+
+        /**
+         * Determines if a node is or contains an assignment expression
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is or contains an assignment expression.
+         * @private
+         */
+        function containsAssignment(node) {
+            if (node.type === "AssignmentExpression") {
+                return true;
+            } else if (node.type === "ConditionalExpression" &&
+                    (node.consequent.type === "AssignmentExpression" || node.alternate.type === "AssignmentExpression")) {
+                return true;
+            } else if ((node.left && node.left.type === "AssignmentExpression") ||
+                    (node.right && node.right.type === "AssignmentExpression")) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a node is contained by or is itself a return statement and is allowed to have a parenthesised assignment
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the assignment can be parenthesised.
+         * @private
+         */
+        function isReturnAssignException(node) {
+            if (!EXCEPT_RETURN_ASSIGN || !isInReturnStatement(node)) {
+                return false;
+            }
+
+            if (node.type === "ReturnStatement") {
+                return node.argument && containsAssignment(node.argument);
+            } else if (node.type === "ArrowFunctionExpression" && node.body.type !== "BlockStatement") {
+                return containsAssignment(node.body);
+            }
+            return containsAssignment(node);
+
+        }
+
+        /**
+         * Determines if a node following a [no LineTerminator here] restriction is
+         * surrounded by (potentially) invalid extra parentheses.
+         * @param {Token} token - The token preceding the [no LineTerminator here] restriction.
+         * @param {ASTNode} node - The node to be checked.
+         * @returns {boolean} True if the node is incorrectly parenthesised.
+         * @private
+         */
+        function hasExcessParensNoLineTerminator(token, node) {
+            if (token.loc.end.line === node.loc.start.line) {
+                return hasExcessParens(node);
+            }
+
+            return hasDoubleExcessParens(node);
+        }
+
+        /**
+         * Determines whether a node should be preceded by an additional space when removing parens
+         * @param {ASTNode} node node to evaluate; must be surrounded by parentheses
+         * @returns {boolean} `true` if a space should be inserted before the node
+         * @private
+         */
+        function requiresLeadingSpace(node) {
+            const leftParenToken = sourceCode.getTokenBefore(node);
+            const tokenBeforeLeftParen = sourceCode.getTokenBefore(node, 1);
+            const firstToken = sourceCode.getFirstToken(node);
+
+            // If there is already whitespace before the previous token, don't add more.
+            if (!tokenBeforeLeftParen || tokenBeforeLeftParen.end !== leftParenToken.start) {
+                return false;
+            }
+
+            // If the parens are preceded by a keyword (e.g. `typeof(0)`), a space should be inserted (`typeof 0`)
+            const precededByIdentiferPart = esUtils.code.isIdentifierPartES6(tokenBeforeLeftParen.value.slice(-1).charCodeAt(0));
+
+            // However, a space should not be inserted unless the first character of the token is an identifier part
+            // e.g. `typeof([])` should be fixed to `typeof[]`
+            const startsWithIdentifierPart = esUtils.code.isIdentifierPartES6(firstToken.value.charCodeAt(0));
+
+            // If the parens are preceded by and start with a unary plus/minus (e.g. `+(+foo)`), a space should be inserted (`+ +foo`)
+            const precededByUnaryPlus = tokenBeforeLeftParen.type === "Punctuator" && tokenBeforeLeftParen.value === "+";
+            const precededByUnaryMinus = tokenBeforeLeftParen.type === "Punctuator" && tokenBeforeLeftParen.value === "-";
+
+            const startsWithUnaryPlus = firstToken.type === "Punctuator" && firstToken.value === "+";
+            const startsWithUnaryMinus = firstToken.type === "Punctuator" && firstToken.value === "-";
+
+            return (precededByIdentiferPart && startsWithIdentifierPart) ||
+                (precededByUnaryPlus && startsWithUnaryPlus) ||
+                (precededByUnaryMinus && startsWithUnaryMinus);
+        }
+
+        /**
+         * Report the node
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            const leftParenToken = sourceCode.getTokenBefore(node);
+            const rightParenToken = sourceCode.getTokenAfter(node);
+
+            if (tokensToIgnore.has(sourceCode.getFirstToken(node)) && !isParenthesisedTwice(node)) {
+                return;
+            }
+
+            context.report({
+                node,
+                loc: leftParenToken.loc.start,
+                message: "Gratuitous parentheses around expression.",
+                fix(fixer) {
+                    const parenthesizedSource = sourceCode.text.slice(leftParenToken.range[1], rightParenToken.range[0]);
+
+                    return fixer.replaceTextRange([
+                        leftParenToken.range[0],
+                        rightParenToken.range[1]
+                    ], (requiresLeadingSpace(node) ? " " : "") + parenthesizedSource);
+                }
+            });
+        }
+
+        /**
+         * Evaluate Unary update
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkUnaryUpdate(node) {
+            if (node.type === "UnaryExpression" && node.argument.type === "BinaryExpression" && node.argument.operator === "**") {
+                return;
+            }
+
+            if (hasExcessParens(node.argument) && precedence(node.argument) >= precedence(node)) {
+                report(node.argument);
+            }
+        }
+
+        /**
+         * Evaluate a new call
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkCallNew(node) {
+            if (hasExcessParens(node.callee) && precedence(node.callee) >= precedence(node) && !(
+                node.type === "CallExpression" &&
+                (node.callee.type === "FunctionExpression" ||
+                  node.callee.type === "NewExpression" && !isNewExpressionWithParens(node.callee)) &&
+
+                // One set of parentheses are allowed for a function expression
+                !hasDoubleExcessParens(node.callee)
+            )) {
+                report(node.callee);
+            }
+            if (node.arguments.length === 1) {
+                if (hasDoubleExcessParens(node.arguments[0]) && precedence(node.arguments[0]) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                    report(node.arguments[0]);
+                }
+            } else {
+                [].forEach.call(node.arguments, arg => {
+                    if (hasExcessParens(arg) && precedence(arg) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                        report(arg);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Evaluate binary logicals
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkBinaryLogical(node) {
+            const prec = precedence(node);
+            const leftPrecedence = precedence(node.left);
+            const rightPrecedence = precedence(node.right);
+            const isExponentiation = node.operator === "**";
+            const shouldSkipLeft = (NESTED_BINARY && (node.left.type === "BinaryExpression" || node.left.type === "LogicalExpression")) ||
+              node.left.type === "UnaryExpression" && isExponentiation;
+            const shouldSkipRight = NESTED_BINARY && (node.right.type === "BinaryExpression" || node.right.type === "LogicalExpression");
+
+            if (!shouldSkipLeft && hasExcessParens(node.left) && (leftPrecedence > prec || (leftPrecedence === prec && !isExponentiation))) {
+                report(node.left);
+            }
+            if (!shouldSkipRight && hasExcessParens(node.right) && (rightPrecedence > prec || (rightPrecedence === prec && isExponentiation))) {
+                report(node.right);
+            }
+        }
+
+        /**
+         * Check the parentheses around the super class of the given class definition.
+         * @param {ASTNode} node The node of class declarations to check.
+         * @returns {void}
+         */
+        function checkClass(node) {
+            if (!node.superClass) {
+                return;
+            }
+
+            // If `node.superClass` is a LeftHandSideExpression, parentheses are extra.
+            // Otherwise, parentheses are needed.
+            const hasExtraParens = precedence(node.superClass) > PRECEDENCE_OF_UPDATE_EXPR
+                ? hasExcessParens(node.superClass)
+                : hasDoubleExcessParens(node.superClass);
+
+            if (hasExtraParens) {
+                report(node.superClass);
+            }
+        }
+
+        /**
+         * Check the parentheses around the argument of the given spread operator.
+         * @param {ASTNode} node The node of spread elements/properties to check.
+         * @returns {void}
+         */
+        function checkSpreadOperator(node) {
+            const hasExtraParens = precedence(node.argument) >= PRECEDENCE_OF_ASSIGNMENT_EXPR
+                ? hasExcessParens(node.argument)
+                : hasDoubleExcessParens(node.argument);
+
+            if (hasExtraParens) {
+                report(node.argument);
+            }
+        }
+
+        /**
+         * Checks the parentheses for an ExpressionStatement or ExportDefaultDeclaration
+         * @param {ASTNode} node The ExpressionStatement.expression or ExportDefaultDeclaration.declaration node
+         * @returns {void}
+         */
+        function checkExpressionOrExportStatement(node) {
+            const firstToken = isParenthesised(node) ? sourceCode.getTokenBefore(node) : sourceCode.getFirstToken(node);
+            const secondToken = sourceCode.getTokenAfter(firstToken, astUtils.isNotOpeningParenToken);
+
+            if (
+                astUtils.isOpeningParenToken(firstToken) &&
+                (
+                    astUtils.isOpeningBraceToken(secondToken) ||
+                    secondToken.type === "Keyword" && (
+                        secondToken.value === "function" ||
+                        secondToken.value === "class" ||
+                        secondToken.value === "let" && astUtils.isOpeningBracketToken(sourceCode.getTokenAfter(secondToken))
+                    )
+                )
+            ) {
+                tokensToIgnore.add(secondToken);
+            }
+
+            if (hasExcessParens(node)) {
+                report(node);
+            }
+        }
+
+        return {
+            ArrayExpression(node) {
+                [].forEach.call(node.elements, e => {
+                    if (e && hasExcessParens(e) && precedence(e) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                        report(e);
+                    }
+                });
+            },
+
+            ArrowFunctionExpression(node) {
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (node.body.type !== "BlockStatement") {
+                    const firstBodyToken = sourceCode.getFirstToken(node.body, astUtils.isNotOpeningParenToken);
+                    const tokenBeforeFirst = sourceCode.getTokenBefore(firstBodyToken);
+
+                    if (astUtils.isOpeningParenToken(tokenBeforeFirst) && astUtils.isOpeningBraceToken(firstBodyToken)) {
+                        tokensToIgnore.add(firstBodyToken);
+                    }
+                    if (hasExcessParens(node.body) && precedence(node.body) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                        report(node.body);
+                    }
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (hasExcessParens(node.right) && precedence(node.right) >= precedence(node)) {
+                    report(node.right);
+                }
+            },
+
+            BinaryExpression: checkBinaryLogical,
+            CallExpression: checkCallNew,
+
+            ConditionalExpression(node) {
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (hasExcessParens(node.test) && precedence(node.test) >= precedence({ type: "LogicalExpression", operator: "||" })) {
+                    report(node.test);
+                }
+
+                if (hasExcessParens(node.consequent) && precedence(node.consequent) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                    report(node.consequent);
+                }
+
+                if (hasExcessParens(node.alternate) && precedence(node.alternate) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                    report(node.alternate);
+                }
+            },
+
+            DoWhileStatement(node) {
+                if (hasDoubleExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            ExportDefaultDeclaration: node => checkExpressionOrExportStatement(node.declaration),
+            ExpressionStatement: node => checkExpressionOrExportStatement(node.expression),
+
+            ForInStatement(node) {
+                if (hasExcessParens(node.right)) {
+                    report(node.right);
+                }
+            },
+
+            ForOfStatement(node) {
+                if (hasExcessParens(node.right)) {
+                    report(node.right);
+                }
+            },
+
+            ForStatement(node) {
+                if (node.init && hasExcessParens(node.init)) {
+                    report(node.init);
+                }
+
+                if (node.test && hasExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+
+                if (node.update && hasExcessParens(node.update)) {
+                    report(node.update);
+                }
+            },
+
+            IfStatement(node) {
+                if (hasDoubleExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            LogicalExpression: checkBinaryLogical,
+
+            MemberExpression(node) {
+                if (
+                    hasExcessParens(node.object) &&
+                    precedence(node.object) >= precedence(node) &&
+                    (
+                        node.computed ||
+                        !(
+                            astUtils.isDecimalInteger(node.object) ||
+
+                            // RegExp literal is allowed to have parens (#1589)
+                            (node.object.type === "Literal" && node.object.regex)
+                        )
+                    )
+                ) {
+                    report(node.object);
+                }
+                if (node.computed && hasExcessParens(node.property)) {
+                    report(node.property);
+                }
+            },
+
+            NewExpression: checkCallNew,
+
+            ObjectExpression(node) {
+                [].forEach.call(node.properties, e => {
+                    const v = e.value;
+
+                    if (v && hasExcessParens(v) && precedence(v) >= PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                        report(v);
+                    }
+                });
+            },
+
+            ReturnStatement(node) {
+                const returnToken = sourceCode.getFirstToken(node);
+
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (node.argument &&
+                        hasExcessParensNoLineTerminator(returnToken, node.argument) &&
+
+                        // RegExp literal is allowed to have parens (#1589)
+                        !(node.argument.type === "Literal" && node.argument.regex)) {
+                    report(node.argument);
+                }
+            },
+
+            SequenceExpression(node) {
+                [].forEach.call(node.expressions, e => {
+                    if (hasExcessParens(e) && precedence(e) >= precedence(node)) {
+                        report(e);
+                    }
+                });
+            },
+
+            SwitchCase(node) {
+                if (node.test && hasExcessParens(node.test)) {
+                    report(node.test);
+                }
+            },
+
+            SwitchStatement(node) {
+                if (hasDoubleExcessParens(node.discriminant)) {
+                    report(node.discriminant);
+                }
+            },
+
+            ThrowStatement(node) {
+                const throwToken = sourceCode.getFirstToken(node);
+
+                if (hasExcessParensNoLineTerminator(throwToken, node.argument)) {
+                    report(node.argument);
+                }
+            },
+
+            UnaryExpression: checkUnaryUpdate,
+            UpdateExpression: checkUnaryUpdate,
+            AwaitExpression: checkUnaryUpdate,
+
+            VariableDeclarator(node) {
+                if (node.init && hasExcessParens(node.init) &&
+                        precedence(node.init) >= PRECEDENCE_OF_ASSIGNMENT_EXPR &&
+
+                        // RegExp literal is allowed to have parens (#1589)
+                        !(node.init.type === "Literal" && node.init.regex)) {
+                    report(node.init);
+                }
+            },
+
+            WhileStatement(node) {
+                if (hasDoubleExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            WithStatement(node) {
+                if (hasDoubleExcessParens(node.object)) {
+                    report(node.object);
+                }
+            },
+
+            YieldExpression(node) {
+                if (node.argument) {
+                    const yieldToken = sourceCode.getFirstToken(node);
+
+                    if ((precedence(node.argument) >= precedence(node) &&
+                            hasExcessParensNoLineTerminator(yieldToken, node.argument)) ||
+                            hasDoubleExcessParens(node.argument)) {
+                        report(node.argument);
+                    }
+                }
+            },
+
+            ClassDeclaration: checkClass,
+            ClassExpression: checkClass,
+
+            SpreadElement: checkSpreadOperator,
+            SpreadProperty: checkSpreadOperator,
+            ExperimentalSpreadProperty: checkSpreadOperator
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-extra-semi.js

@@ -0,0 +1,118 @@
+/**
+ * @fileoverview Rule to flag use of unnecessary semicolons
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const FixTracker = require("../util/fix-tracker");
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow unnecessary semicolons",
+            category: "Possible Errors",
+            recommended: true
+        },
+
+        fixable: "code",
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports an unnecessary semicolon error.
+         * @param {Node|Token} nodeOrToken - A node or a token to be reported.
+         * @returns {void}
+         */
+        function report(nodeOrToken) {
+            context.report({
+                node: nodeOrToken,
+                message: "Unnecessary semicolon.",
+                fix(fixer) {
+
+                    // Expand the replacement range to include the surrounding
+                    // tokens to avoid conflicting with semi.
+                    // https://github.com/eslint/eslint/issues/7928
+                    return new FixTracker(fixer, context.getSourceCode())
+                        .retainSurroundingTokens(nodeOrToken)
+                        .remove(nodeOrToken);
+                }
+            });
+        }
+
+        /**
+         * Checks for a part of a class body.
+         * This checks tokens from a specified token to a next MethodDefinition or the end of class body.
+         *
+         * @param {Token} firstToken - The first token to check.
+         * @returns {void}
+         */
+        function checkForPartOfClassBody(firstToken) {
+            for (let token = firstToken;
+                token.type === "Punctuator" && !astUtils.isClosingBraceToken(token);
+                token = sourceCode.getTokenAfter(token)
+            ) {
+                if (astUtils.isSemicolonToken(token)) {
+                    report(token);
+                }
+            }
+        }
+
+        return {
+
+            /**
+             * Reports this empty statement, except if the parent node is a loop.
+             * @param {Node} node - A EmptyStatement node to be reported.
+             * @returns {void}
+             */
+            EmptyStatement(node) {
+                const parent = node.parent,
+                    allowedParentTypes = [
+                        "ForStatement",
+                        "ForInStatement",
+                        "ForOfStatement",
+                        "WhileStatement",
+                        "DoWhileStatement",
+                        "IfStatement",
+                        "LabeledStatement",
+                        "WithStatement"
+                    ];
+
+                if (allowedParentTypes.indexOf(parent.type) === -1) {
+                    report(node);
+                }
+            },
+
+            /**
+             * Checks tokens from the head of this class body to the first MethodDefinition or the end of this class body.
+             * @param {Node} node - A ClassBody node to check.
+             * @returns {void}
+             */
+            ClassBody(node) {
+                checkForPartOfClassBody(sourceCode.getFirstToken(node, 1)); // 0 is `{`.
+            },
+
+            /**
+             * Checks tokens from this MethodDefinition to the next MethodDefinition or the end of this class body.
+             * @param {Node} node - A MethodDefinition node of the start point.
+             * @returns {void}
+             */
+            MethodDefinition(node) {
+                checkForPartOfClassBody(sourceCode.getTokenAfter(node));
+            }
+        };
+
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-fallthrough.js

@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Rule to flag fall-through cases in switch statements.
+ * @author Matt DuVall <http://mattduvall.com/>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_FALLTHROUGH_COMMENT = /falls?\s?through/i;
+
+/**
+ * Checks whether or not a given node has a fallthrough comment.
+ * @param {ASTNode} node - A SwitchCase node to get comments.
+ * @param {RuleContext} context - A rule context which stores comments.
+ * @param {RegExp} fallthroughCommentPattern - A pattern to match comment to.
+ * @returns {boolean} `true` if the node has a valid fallthrough comment.
+ */
+function hasFallthroughComment(node, context, fallthroughCommentPattern) {
+    const sourceCode = context.getSourceCode();
+    const comment = lodash.last(sourceCode.getComments(node).leading);
+
+    return Boolean(comment && fallthroughCommentPattern.test(comment.value));
+}
+
+/**
+ * Checks whether or not a given code path segment is reachable.
+ * @param {CodePathSegment} segment - A CodePathSegment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Checks whether a node and a token are separated by blank lines
+ * @param {ASTNode} node - The node to check
+ * @param {Token} token - The token to compare against
+ * @returns {boolean} `true` if there are blank lines between node and token
+ */
+function hasBlankLinesBetween(node, token) {
+    return token.loc.start.line > node.loc.end.line + 1;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow fallthrough of `case` statements",
+            category: "Best Practices",
+            recommended: true
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    commentPattern: {
+                        type: "string"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        let currentCodePath = null;
+        const sourceCode = context.getSourceCode();
+
+        /*
+         * We need to use leading comments of the next SwitchCase node because
+         * trailing comments is wrong if semicolons are omitted.
+         */
+        let fallthroughCase = null;
+        let fallthroughCommentPattern = null;
+
+        if (options.commentPattern) {
+            fallthroughCommentPattern = new RegExp(options.commentPattern);
+        } else {
+            fallthroughCommentPattern = DEFAULT_FALLTHROUGH_COMMENT;
+        }
+
+        return {
+            onCodePathStart(codePath) {
+                currentCodePath = codePath;
+            },
+            onCodePathEnd() {
+                currentCodePath = currentCodePath.upper;
+            },
+
+            SwitchCase(node) {
+
+                /*
+                 * Checks whether or not there is a fallthrough comment.
+                 * And reports the previous fallthrough node if that does not exist.
+                 */
+                if (fallthroughCase && !hasFallthroughComment(node, context, fallthroughCommentPattern)) {
+                    context.report({
+                        message: "Expected a 'break' statement before '{{type}}'.",
+                        data: { type: node.test ? "case" : "default" },
+                        node
+                    });
+                }
+                fallthroughCase = null;
+            },
+
+            "SwitchCase:exit"(node) {
+                const nextToken = sourceCode.getTokenAfter(node);
+
+                /*
+                 * `reachable` meant fall through because statements preceded by
+                 * `break`, `return`, or `throw` are unreachable.
+                 * And allows empty cases and the last case.
+                 */
+                if (currentCodePath.currentSegments.some(isReachable) &&
+                    (node.consequent.length > 0 || hasBlankLinesBetween(node, nextToken)) &&
+                    lodash.last(node.parent.cases) !== node) {
+                    fallthroughCase = node;
+                }
+            }
+        };
+    }
+};

static/js/ketcher2/node_modules/eslint/lib/rules/no-floating-decimal.js

@@ -0,0 +1,50 @@
+/**
+ * @fileoverview Rule to flag use of a leading/trailing decimal point in a numeric literal
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow leading or trailing decimal points in numeric literals",
+            category: "Best Practices",
+            recommended: false
+        },
+
+        schema: [],
+
+        fixable: "code"
+    },
+
+    create(context) {
+
+        return {
+            Literal(node) {
+
+                if (typeof node.value === "number") {
+                    if (node.raw.indexOf(".") === 0) {
+                        context.report({
+                            node,
+                            message: "A leading decimal point can be confused with a dot.",
+                            fix: fixer => fixer.insertTextBefore(node, "0")
+                        });
+                    }
+                    if (node.raw.indexOf(".") === node.raw.length - 1) {
+                        context.report({
+                            node,
+                            message: "A trailing decimal point can be confused with a dot.",
+                            fix: fixer => fixer.insertTextAfter(node, "0")
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};