Current Dev State

static/js/ketcher2/node_modules/eslint/lib/rules/object-curly-newline.js

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+/**
+ * @fileoverview Rule to require or disallow line breaks inside braces.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+// Schema objects.
+const OPTION_VALUE = {
+    oneOf: [
+        {
+            enum: ["always", "never"]
+        },
+        {
+            type: "object",
+            properties: {
+                multiline: {
+                    type: "boolean"
+                },
+                minProperties: {
+                    type: "integer",
+                    minimum: 0
+                }
+            },
+            additionalProperties: false,
+            minProperties: 1
+        }
+    ]
+};
+
+/**
+ * Normalizes a given option value.
+ *
+ * @param {string|Object|undefined} value - An option value to parse.
+ * @returns {{multiline: boolean, minProperties: number}} Normalized option object.
+ */
+function normalizeOptionValue(value) {
+    let multiline = false;
+    let minProperties = Number.POSITIVE_INFINITY;
+
+    if (value) {
+        if (value === "always") {
+            minProperties = 0;
+        } else if (value === "never") {
+            minProperties = Number.POSITIVE_INFINITY;
+        } else {
+            multiline = Boolean(value.multiline);
+            minProperties = value.minProperties || Number.POSITIVE_INFINITY;
+        }
+    } else {
+        multiline = true;
+    }
+
+    return { multiline, minProperties };
+}
+
+/**
+ * Normalizes a given option value.
+ *
+ * @param {string|Object|undefined} options - An option value to parse.
+ * @returns {{ObjectExpression: {multiline: boolean, minProperties: number}, ObjectPattern: {multiline: boolean, minProperties: number}}} Normalized option object.
+ */
+function normalizeOptions(options) {
+    if (options && (options.ObjectExpression || options.ObjectPattern)) {
+        return {
+            ObjectExpression: normalizeOptionValue(options.ObjectExpression),
+            ObjectPattern: normalizeOptionValue(options.ObjectPattern)
+        };
+    }
+
+    const value = normalizeOptionValue(options);
+
+    return { ObjectExpression: value, ObjectPattern: value };
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce consistent line breaks inside braces",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+        fixable: "whitespace",
+        schema: [
+            {
+                oneOf: [
+                    OPTION_VALUE,
+                    {
+                        type: "object",
+                        properties: {
+                            ObjectExpression: OPTION_VALUE,
+                            ObjectPattern: OPTION_VALUE
+                        },
+                        additionalProperties: false,
+                        minProperties: 1
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const normalizedOptions = normalizeOptions(context.options[0]);
+
+        /**
+         * Reports a given node if it violated this rule.
+         *
+         * @param {ASTNode} node - A node to check. This is an ObjectExpression node or an ObjectPattern node.
+         * @param {{multiline: boolean, minProperties: number}} options - An option object.
+         * @returns {void}
+         */
+        function check(node) {
+            const options = normalizedOptions[node.type];
+            const openBrace = sourceCode.getFirstToken(node);
+            const closeBrace = sourceCode.getLastToken(node);
+            let first = sourceCode.getTokenAfter(openBrace, { includeComments: true });
+            let last = sourceCode.getTokenBefore(closeBrace, { includeComments: true });
+            const needsLinebreaks = (
+                node.properties.length >= options.minProperties ||
+                (
+                    options.multiline &&
+                    node.properties.length > 0 &&
+                    first.loc.start.line !== last.loc.end.line
+                )
+            );
+
+            /*
+             * Use tokens or comments to check multiline or not.
+             * But use only tokens to check whether line breaks are needed.
+             * This allows:
+             *     var obj = { // eslint-disable-line foo
+             *         a: 1
+             *     }
+             */
+            first = sourceCode.getTokenAfter(openBrace);
+            last = sourceCode.getTokenBefore(closeBrace);
+
+            if (needsLinebreaks) {
+                if (astUtils.isTokenOnSameLine(openBrace, first)) {
+                    context.report({
+                        message: "Expected a line break after this opening brace.",
+                        node,
+                        loc: openBrace.loc.start,
+                        fix(fixer) {
+                            return fixer.insertTextAfter(openBrace, "\n");
+                        }
+                    });
+                }
+                if (astUtils.isTokenOnSameLine(last, closeBrace)) {
+                    context.report({
+                        message: "Expected a line break before this closing brace.",
+                        node,
+                        loc: closeBrace.loc.start,
+                        fix(fixer) {
+                            return fixer.insertTextBefore(closeBrace, "\n");
+                        }
+                    });
+                }
+            } else {
+                if (!astUtils.isTokenOnSameLine(openBrace, first)) {
+                    context.report({
+                        message: "Unexpected line break after this opening brace.",
+                        node,
+                        loc: openBrace.loc.start,
+                        fix(fixer) {
+                            return fixer.removeRange([
+                                openBrace.range[1],
+                                first.range[0]
+                            ]);
+                        }
+                    });
+                }
+                if (!astUtils.isTokenOnSameLine(last, closeBrace)) {
+                    context.report({
+                        message: "Unexpected line break before this closing brace.",
+                        node,
+                        loc: closeBrace.loc.start,
+                        fix(fixer) {
+                            return fixer.removeRange([
+                                last.range[1],
+                                closeBrace.range[0]
+                            ]);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ObjectExpression: check,
+            ObjectPattern: check
+        };
+    }
+};