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Tim Lorsbach
2025-06-23 20:13:54 +02:00
parent b4f9bb277d
commit ded50edaa2
22617 changed files with 4345095 additions and 174 deletions
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static/js/ketcher2/node_modules/eslint/lib/config/autoconfig.js generated vendored Normal file
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/**
* @fileoverview Used for creating a suggested configuration based on project code.
* @author Ian VanSchooten
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const lodash = require("lodash"),
eslint = require("../eslint"),
configRule = require("./config-rule"),
ConfigOps = require("./config-ops"),
recConfig = require("../../conf/eslint-recommended");
const debug = require("debug")("eslint:autoconfig");
//------------------------------------------------------------------------------
// Data
//------------------------------------------------------------------------------
const MAX_CONFIG_COMBINATIONS = 17, // 16 combinations + 1 for severity only
RECOMMENDED_CONFIG_NAME = "eslint:recommended";
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
/**
* Information about a rule configuration, in the context of a Registry.
*
* @typedef {Object} registryItem
* @param {ruleConfig} config A valid configuration for the rule
* @param {number} specificity The number of elements in the ruleConfig array
* @param {number} errorCount The number of errors encountered when linting with the config
*/
/**
* This callback is used to measure execution status in a progress bar
* @callback progressCallback
* @param {number} The total number of times the callback will be called.
*/
/**
* Create registryItems for rules
* @param {rulesConfig} rulesConfig Hash of rule names and arrays of ruleConfig items
* @returns {Object} registryItems for each rule in provided rulesConfig
*/
function makeRegistryItems(rulesConfig) {
return Object.keys(rulesConfig).reduce((accumulator, ruleId) => {
accumulator[ruleId] = rulesConfig[ruleId].map(config => ({
config,
specificity: config.length || 1,
errorCount: void 0
}));
return accumulator;
}, {});
}
/**
* Creates an object in which to store rule configs and error counts
*
* Unless a rulesConfig is provided at construction, the registry will not contain
* any rules, only methods. This will be useful for building up registries manually.
*
* Registry class
*/
class Registry {
/**
* @param {rulesConfig} [rulesConfig] Hash of rule names and arrays of possible configurations
*/
constructor(rulesConfig) {
this.rules = (rulesConfig) ? makeRegistryItems(rulesConfig) : {};
}
/**
* Populate the registry with core rule configs.
*
* It will set the registry's `rule` property to an object having rule names
* as keys and an array of registryItems as values.
*
* @returns {void}
*/
populateFromCoreRules() {
const rulesConfig = configRule.createCoreRuleConfigs();
this.rules = makeRegistryItems(rulesConfig);
}
/**
* Creates sets of rule configurations which can be used for linting
* and initializes registry errors to zero for those configurations (side effect).
*
* This combines as many rules together as possible, such that the first sets
* in the array will have the highest number of rules configured, and later sets
* will have fewer and fewer, as not all rules have the same number of possible
* configurations.
*
* The length of the returned array will be <= MAX_CONFIG_COMBINATIONS.
*
* @param {Object} registry The autoconfig registry
* @returns {Object[]} "rules" configurations to use for linting
*/
buildRuleSets() {
let idx = 0;
const ruleIds = Object.keys(this.rules),
ruleSets = [];
/**
* Add a rule configuration from the registry to the ruleSets
*
* This is broken out into its own function so that it doesn't need to be
* created inside of the while loop.
*
* @param {string} rule The ruleId to add.
* @returns {void}
*/
const addRuleToRuleSet = function(rule) {
/*
* This check ensures that there is a rule configuration and that
* it has fewer than the max combinations allowed.
* If it has too many configs, we will only use the most basic of
* the possible configurations.
*/
const hasFewCombos = (this.rules[rule].length <= MAX_CONFIG_COMBINATIONS);
if (this.rules[rule][idx] && (hasFewCombos || this.rules[rule][idx].specificity <= 2)) {
/*
* If the rule has too many possible combinations, only take
* simple ones, avoiding objects.
*/
if (!hasFewCombos && typeof this.rules[rule][idx].config[1] === "object") {
return;
}
ruleSets[idx] = ruleSets[idx] || {};
ruleSets[idx][rule] = this.rules[rule][idx].config;
/*
* Initialize errorCount to zero, since this is a config which
* will be linted.
*/
this.rules[rule][idx].errorCount = 0;
}
}.bind(this);
while (ruleSets.length === idx) {
ruleIds.forEach(addRuleToRuleSet);
idx += 1;
}
return ruleSets;
}
/**
* Remove all items from the registry with a non-zero number of errors
*
* Note: this also removes rule configurations which were not linted
* (meaning, they have an undefined errorCount).
*
* @returns {void}
*/
stripFailingConfigs() {
const ruleIds = Object.keys(this.rules),
newRegistry = new Registry();
newRegistry.rules = Object.assign({}, this.rules);
ruleIds.forEach(ruleId => {
const errorFreeItems = newRegistry.rules[ruleId].filter(registryItem => (registryItem.errorCount === 0));
if (errorFreeItems.length > 0) {
newRegistry.rules[ruleId] = errorFreeItems;
} else {
delete newRegistry.rules[ruleId];
}
});
return newRegistry;
}
/**
* Removes rule configurations which were not included in a ruleSet
*
* @returns {void}
*/
stripExtraConfigs() {
const ruleIds = Object.keys(this.rules),
newRegistry = new Registry();
newRegistry.rules = Object.assign({}, this.rules);
ruleIds.forEach(ruleId => {
newRegistry.rules[ruleId] = newRegistry.rules[ruleId].filter(registryItem => (typeof registryItem.errorCount !== "undefined"));
});
return newRegistry;
}
/**
* Creates a registry of rules which had no error-free configs.
* The new registry is intended to be analyzed to determine whether its rules
* should be disabled or set to warning.
*
* @returns {Registry} A registry of failing rules.
*/
getFailingRulesRegistry() {
const ruleIds = Object.keys(this.rules),
failingRegistry = new Registry();
ruleIds.forEach(ruleId => {
const failingConfigs = this.rules[ruleId].filter(registryItem => (registryItem.errorCount > 0));
if (failingConfigs && failingConfigs.length === this.rules[ruleId].length) {
failingRegistry.rules[ruleId] = failingConfigs;
}
});
return failingRegistry;
}
/**
* Create an eslint config for any rules which only have one configuration
* in the registry.
*
* @returns {Object} An eslint config with rules section populated
*/
createConfig() {
const ruleIds = Object.keys(this.rules),
config = { rules: {} };
ruleIds.forEach(ruleId => {
if (this.rules[ruleId].length === 1) {
config.rules[ruleId] = this.rules[ruleId][0].config;
}
});
return config;
}
/**
* Return a cloned registry containing only configs with a desired specificity
*
* @param {number} specificity Only keep configs with this specificity
* @returns {Registry} A registry of rules
*/
filterBySpecificity(specificity) {
const ruleIds = Object.keys(this.rules),
newRegistry = new Registry();
newRegistry.rules = Object.assign({}, this.rules);
ruleIds.forEach(ruleId => {
newRegistry.rules[ruleId] = this.rules[ruleId].filter(registryItem => (registryItem.specificity === specificity));
});
return newRegistry;
}
/**
* Lint SourceCodes against all configurations in the registry, and record results
*
* @param {Object[]} sourceCodes SourceCode objects for each filename
* @param {Object} config ESLint config object
* @param {progressCallback} [cb] Optional callback for reporting execution status
* @returns {Registry} New registry with errorCount populated
*/
lintSourceCode(sourceCodes, config, cb) {
let ruleSetIdx,
lintedRegistry;
lintedRegistry = new Registry();
lintedRegistry.rules = Object.assign({}, this.rules);
const ruleSets = lintedRegistry.buildRuleSets();
lintedRegistry = lintedRegistry.stripExtraConfigs();
debug("Linting with all possible rule combinations");
const filenames = Object.keys(sourceCodes);
const totalFilesLinting = filenames.length * ruleSets.length;
filenames.forEach(filename => {
debug(`Linting file: ${filename}`);
ruleSetIdx = 0;
ruleSets.forEach(ruleSet => {
const lintConfig = Object.assign({}, config, { rules: ruleSet });
const lintResults = eslint.verify(sourceCodes[filename], lintConfig);
lintResults.forEach(result => {
// It is possible that the error is from a configuration comment
// in a linted file, in which case there may not be a config
// set in this ruleSetIdx.
// (https://github.com/eslint/eslint/issues/5992)
// (https://github.com/eslint/eslint/issues/7860)
if (
lintedRegistry.rules[result.ruleId] &&
lintedRegistry.rules[result.ruleId][ruleSetIdx]
) {
lintedRegistry.rules[result.ruleId][ruleSetIdx].errorCount += 1;
}
});
ruleSetIdx += 1;
if (cb) {
cb(totalFilesLinting); // eslint-disable-line callback-return
}
});
// Deallocate for GC
sourceCodes[filename] = null;
});
return lintedRegistry;
}
}
/**
* Extract rule configuration into eslint:recommended where possible.
*
* This will return a new config with `"extends": "eslint:recommended"` and
* only the rules which have configurations different from the recommended config.
*
* @param {Object} config config object
* @returns {Object} config object using `"extends": "eslint:recommended"`
*/
function extendFromRecommended(config) {
const newConfig = Object.assign({}, config);
ConfigOps.normalizeToStrings(newConfig);
const recRules = Object.keys(recConfig.rules).filter(ruleId => ConfigOps.isErrorSeverity(recConfig.rules[ruleId]));
recRules.forEach(ruleId => {
if (lodash.isEqual(recConfig.rules[ruleId], newConfig.rules[ruleId])) {
delete newConfig.rules[ruleId];
}
});
newConfig.extends = RECOMMENDED_CONFIG_NAME;
return newConfig;
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
Registry,
extendFromRecommended
};

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/**
* @fileoverview Helper to locate and load configuration files.
* @author Nicholas C. Zakas
*/
/* eslint no-use-before-define: 0 */
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const fs = require("fs"),
path = require("path"),
shell = require("shelljs"),
ConfigOps = require("./config-ops"),
validator = require("./config-validator"),
Plugins = require("./plugins"),
pathUtil = require("../util/path-util"),
ModuleResolver = require("../util/module-resolver"),
pathIsInside = require("path-is-inside"),
stripBom = require("strip-bom"),
stripComments = require("strip-json-comments"),
stringify = require("json-stable-stringify"),
defaultOptions = require("../../conf/eslint-recommended"),
requireUncached = require("require-uncached");
const debug = require("debug")("eslint:config-file");
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
/**
* Determines sort order for object keys for json-stable-stringify
*
* see: https://github.com/substack/json-stable-stringify#cmp
*
* @param {Object} a The first comparison object ({key: akey, value: avalue})
* @param {Object} b The second comparison object ({key: bkey, value: bvalue})
* @returns {number} 1 or -1, used in stringify cmp method
*/
function sortByKey(a, b) {
return a.key > b.key ? 1 : -1;
}
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
const CONFIG_FILES = [
".eslintrc.js",
".eslintrc.yaml",
".eslintrc.yml",
".eslintrc.json",
".eslintrc",
"package.json"
];
const resolver = new ModuleResolver();
/**
* Convenience wrapper for synchronously reading file contents.
* @param {string} filePath The filename to read.
* @returns {string} The file contents.
* @private
*/
function readFile(filePath) {
return stripBom(fs.readFileSync(filePath, "utf8"));
}
/**
* Determines if a given string represents a filepath or not using the same
* conventions as require(), meaning that the first character must be nonalphanumeric
* and not the @ sign which is used for scoped packages to be considered a file path.
* @param {string} filePath The string to check.
* @returns {boolean} True if it's a filepath, false if not.
* @private
*/
function isFilePath(filePath) {
return path.isAbsolute(filePath) || !/\w|@/.test(filePath.charAt(0));
}
/**
* Loads a YAML configuration from a file.
* @param {string} filePath The filename to load.
* @returns {Object} The configuration object from the file.
* @throws {Error} If the file cannot be read.
* @private
*/
function loadYAMLConfigFile(filePath) {
debug(`Loading YAML config file: ${filePath}`);
// lazy load YAML to improve performance when not used
const yaml = require("js-yaml");
try {
// empty YAML file can be null, so always use
return yaml.safeLoad(readFile(filePath)) || {};
} catch (e) {
debug(`Error reading YAML file: ${filePath}`);
e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
throw e;
}
}
/**
* Loads a JSON configuration from a file.
* @param {string} filePath The filename to load.
* @returns {Object} The configuration object from the file.
* @throws {Error} If the file cannot be read.
* @private
*/
function loadJSONConfigFile(filePath) {
debug(`Loading JSON config file: ${filePath}`);
try {
return JSON.parse(stripComments(readFile(filePath)));
} catch (e) {
debug(`Error reading JSON file: ${filePath}`);
e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
throw e;
}
}
/**
* Loads a legacy (.eslintrc) configuration from a file.
* @param {string} filePath The filename to load.
* @returns {Object} The configuration object from the file.
* @throws {Error} If the file cannot be read.
* @private
*/
function loadLegacyConfigFile(filePath) {
debug(`Loading config file: ${filePath}`);
// lazy load YAML to improve performance when not used
const yaml = require("js-yaml");
try {
return yaml.safeLoad(stripComments(readFile(filePath))) || /* istanbul ignore next */ {};
} catch (e) {
debug(`Error reading YAML file: ${filePath}`);
e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
throw e;
}
}
/**
* Loads a JavaScript configuration from a file.
* @param {string} filePath The filename to load.
* @returns {Object} The configuration object from the file.
* @throws {Error} If the file cannot be read.
* @private
*/
function loadJSConfigFile(filePath) {
debug(`Loading JS config file: ${filePath}`);
try {
return requireUncached(filePath);
} catch (e) {
debug(`Error reading JavaScript file: ${filePath}`);
e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
throw e;
}
}
/**
* Loads a configuration from a package.json file.
* @param {string} filePath The filename to load.
* @returns {Object} The configuration object from the file.
* @throws {Error} If the file cannot be read.
* @private
*/
function loadPackageJSONConfigFile(filePath) {
debug(`Loading package.json config file: ${filePath}`);
try {
return loadJSONConfigFile(filePath).eslintConfig || null;
} catch (e) {
debug(`Error reading package.json file: ${filePath}`);
e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
throw e;
}
}
/**
* Creates an error to notify about a missing config to extend from.
* @param {string} configName The name of the missing config.
* @returns {Error} The error object to throw
* @private
*/
function configMissingError(configName) {
const error = new Error(`Failed to load config "${configName}" to extend from.`);
error.messageTemplate = "extend-config-missing";
error.messageData = {
configName
};
return error;
}
/**
* Loads a configuration file regardless of the source. Inspects the file path
* to determine the correctly way to load the config file.
* @param {Object} file The path to the configuration.
* @returns {Object} The configuration information.
* @private
*/
function loadConfigFile(file) {
const filePath = file.filePath;
let config;
switch (path.extname(filePath)) {
case ".js":
config = loadJSConfigFile(filePath);
if (file.configName) {
config = config.configs[file.configName];
if (!config) {
throw configMissingError(file.configFullName);
}
}
break;
case ".json":
if (path.basename(filePath) === "package.json") {
config = loadPackageJSONConfigFile(filePath);
if (config === null) {
return null;
}
} else {
config = loadJSONConfigFile(filePath);
}
break;
case ".yaml":
case ".yml":
config = loadYAMLConfigFile(filePath);
break;
default:
config = loadLegacyConfigFile(filePath);
}
return ConfigOps.merge(ConfigOps.createEmptyConfig(), config);
}
/**
* Writes a configuration file in JSON format.
* @param {Object} config The configuration object to write.
* @param {string} filePath The filename to write to.
* @returns {void}
* @private
*/
function writeJSONConfigFile(config, filePath) {
debug(`Writing JSON config file: ${filePath}`);
const content = stringify(config, { cmp: sortByKey, space: 4 });
fs.writeFileSync(filePath, content, "utf8");
}
/**
* Writes a configuration file in YAML format.
* @param {Object} config The configuration object to write.
* @param {string} filePath The filename to write to.
* @returns {void}
* @private
*/
function writeYAMLConfigFile(config, filePath) {
debug(`Writing YAML config file: ${filePath}`);
// lazy load YAML to improve performance when not used
const yaml = require("js-yaml");
const content = yaml.safeDump(config, { sortKeys: true });
fs.writeFileSync(filePath, content, "utf8");
}
/**
* Writes a configuration file in JavaScript format.
* @param {Object} config The configuration object to write.
* @param {string} filePath The filename to write to.
* @returns {void}
* @private
*/
function writeJSConfigFile(config, filePath) {
debug(`Writing JS config file: ${filePath}`);
const content = `module.exports = ${stringify(config, { cmp: sortByKey, space: 4 })};`;
fs.writeFileSync(filePath, content, "utf8");
}
/**
* Writes a configuration file.
* @param {Object} config The configuration object to write.
* @param {string} filePath The filename to write to.
* @returns {void}
* @throws {Error} When an unknown file type is specified.
* @private
*/
function write(config, filePath) {
switch (path.extname(filePath)) {
case ".js":
writeJSConfigFile(config, filePath);
break;
case ".json":
writeJSONConfigFile(config, filePath);
break;
case ".yaml":
case ".yml":
writeYAMLConfigFile(config, filePath);
break;
default:
throw new Error("Can't write to unknown file type.");
}
}
/**
* Determines the base directory for node packages referenced in a config file.
* This does not include node_modules in the path so it can be used for all
* references relative to a config file.
* @param {string} configFilePath The config file referencing the file.
* @returns {string} The base directory for the file path.
* @private
*/
function getBaseDir(configFilePath) {
// calculates the path of the project including ESLint as dependency
const projectPath = path.resolve(__dirname, "../../../");
if (configFilePath && pathIsInside(configFilePath, projectPath)) {
// be careful of https://github.com/substack/node-resolve/issues/78
return path.join(path.resolve(configFilePath));
}
/*
* default to ESLint project path since it's unlikely that plugins will be
* in this directory
*/
return path.join(projectPath);
}
/**
* Determines the lookup path, including node_modules, for package
* references relative to a config file.
* @param {string} configFilePath The config file referencing the file.
* @returns {string} The lookup path for the file path.
* @private
*/
function getLookupPath(configFilePath) {
const basedir = getBaseDir(configFilePath);
return path.join(basedir, "node_modules");
}
/**
* Resolves a eslint core config path
* @param {string} name The eslint config name.
* @returns {string} The resolved path of the config.
* @private
*/
function getEslintCoreConfigPath(name) {
if (name === "eslint:recommended") {
/*
* Add an explicit substitution for eslint:recommended to
* conf/eslint-recommended.js.
*/
return path.resolve(__dirname, "../../conf/eslint-recommended.js");
}
if (name === "eslint:all") {
/*
* Add an explicit substitution for eslint:all to conf/eslint-all.js
*/
return path.resolve(__dirname, "../../conf/eslint-all.js");
}
throw configMissingError(name);
}
/**
* Applies values from the "extends" field in a configuration file.
* @param {Object} config The configuration information.
* @param {string} filePath The file path from which the configuration information
* was loaded.
* @param {string} [relativeTo] The path to resolve relative to.
* @returns {Object} A new configuration object with all of the "extends" fields
* loaded and merged.
* @private
*/
function applyExtends(config, filePath, relativeTo) {
let configExtends = config.extends;
// normalize into an array for easier handling
if (!Array.isArray(config.extends)) {
configExtends = [config.extends];
}
// Make the last element in an array take the highest precedence
config = configExtends.reduceRight((previousValue, parentPath) => {
try {
if (parentPath.startsWith("eslint:")) {
parentPath = getEslintCoreConfigPath(parentPath);
} else if (isFilePath(parentPath)) {
/*
* If the `extends` path is relative, use the directory of the current configuration
* file as the reference point. Otherwise, use as-is.
*/
parentPath = (path.isAbsolute(parentPath)
? parentPath
: path.join(relativeTo || path.dirname(filePath), parentPath)
);
}
debug(`Loading ${parentPath}`);
return ConfigOps.merge(load(parentPath, false, relativeTo), previousValue);
} catch (e) {
/*
* If the file referenced by `extends` failed to load, add the path
* to the configuration file that referenced it to the error
* message so the user is able to see where it was referenced from,
* then re-throw.
*/
e.message += `\nReferenced from: ${filePath}`;
throw e;
}
}, config);
return config;
}
/**
* Brings package name to correct format based on prefix
* @param {string} name The name of the package.
* @param {string} prefix Can be either "eslint-plugin" or "eslint-config
* @returns {string} Normalized name of the package
* @private
*/
function normalizePackageName(name, prefix) {
/*
* On Windows, name can come in with Windows slashes instead of Unix slashes.
* Normalize to Unix first to avoid errors later on.
* https://github.com/eslint/eslint/issues/5644
*/
if (name.indexOf("\\") > -1) {
name = pathUtil.convertPathToPosix(name);
}
if (name.charAt(0) === "@") {
/*
* it's a scoped package
* package name is "eslint-config", or just a username
*/
const scopedPackageShortcutRegex = new RegExp(`^(@[^/]+)(?:/(?:${prefix})?)?$`),
scopedPackageNameRegex = new RegExp(`^${prefix}(-|$)`);
if (scopedPackageShortcutRegex.test(name)) {
name = name.replace(scopedPackageShortcutRegex, `$1/${prefix}`);
} else if (!scopedPackageNameRegex.test(name.split("/")[1])) {
/*
* for scoped packages, insert the eslint-config after the first / unless
* the path is already @scope/eslint or @scope/eslint-config-xxx
*/
name = name.replace(/^@([^/]+)\/(.*)$/, `@$1/${prefix}-$2`);
}
} else if (name.indexOf(`${prefix}-`) !== 0) {
name = `${prefix}-${name}`;
}
return name;
}
/**
* Resolves a configuration file path into the fully-formed path, whether filename
* or package name.
* @param {string} filePath The filepath to resolve.
* @param {string} [relativeTo] The path to resolve relative to.
* @returns {Object} An object containing 3 properties:
* - 'filePath' (required) the resolved path that can be used directly to load the configuration.
* - 'configName' the name of the configuration inside the plugin.
* - 'configFullName' the name of the configuration as used in the eslint config (e.g. 'plugin:node/recommended').
* @private
*/
function resolve(filePath, relativeTo) {
if (isFilePath(filePath)) {
return { filePath: path.resolve(relativeTo || "", filePath) };
}
let normalizedPackageName;
if (filePath.startsWith("plugin:")) {
const configFullName = filePath;
const pluginName = filePath.substr(7, filePath.lastIndexOf("/") - 7);
const configName = filePath.substr(filePath.lastIndexOf("/") + 1, filePath.length - filePath.lastIndexOf("/") - 1);
normalizedPackageName = normalizePackageName(pluginName, "eslint-plugin");
debug(`Attempting to resolve ${normalizedPackageName}`);
filePath = resolver.resolve(normalizedPackageName, getLookupPath(relativeTo));
return { filePath, configName, configFullName };
}
normalizedPackageName = normalizePackageName(filePath, "eslint-config");
debug(`Attempting to resolve ${normalizedPackageName}`);
filePath = resolver.resolve(normalizedPackageName, getLookupPath(relativeTo));
return { filePath };
}
/**
* Loads a configuration file from the given file path.
* @param {string} filePath The filename or package name to load the configuration
* information from.
* @param {boolean} [applyEnvironments=false] Set to true to merge in environment settings.
* @param {string} [relativeTo] The path to resolve relative to.
* @returns {Object} The configuration information.
* @private
*/
function load(filePath, applyEnvironments, relativeTo) {
const resolvedPath = resolve(filePath, relativeTo),
dirname = path.dirname(resolvedPath.filePath),
lookupPath = getLookupPath(dirname);
let config = loadConfigFile(resolvedPath);
if (config) {
// ensure plugins are properly loaded first
if (config.plugins) {
Plugins.loadAll(config.plugins);
}
// remove parser from config if it is the default parser
if (config.parser === defaultOptions.parser) {
config.parser = null;
}
// include full path of parser if present
if (config.parser) {
if (isFilePath(config.parser)) {
config.parser = path.resolve(dirname || "", config.parser);
} else {
config.parser = resolver.resolve(config.parser, lookupPath);
}
}
// validate the configuration before continuing
validator.validate(config, filePath);
/*
* If an `extends` property is defined, it represents a configuration file to use as
* a "parent". Load the referenced file and merge the configuration recursively.
*/
if (config.extends) {
config = applyExtends(config, filePath, dirname);
}
if (config.env && applyEnvironments) {
// Merge in environment-specific globals and parserOptions.
config = ConfigOps.applyEnvironments(config);
}
}
return config;
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
getBaseDir,
getLookupPath,
load,
resolve,
write,
applyExtends,
normalizePackageName,
CONFIG_FILES,
/**
* Retrieves the configuration filename for a given directory. It loops over all
* of the valid configuration filenames in order to find the first one that exists.
* @param {string} directory The directory to check for a config file.
* @returns {?string} The filename of the configuration file for the directory
* or null if there is no configuration file in the directory.
*/
getFilenameForDirectory(directory) {
for (let i = 0, len = CONFIG_FILES.length; i < len; i++) {
const filename = path.join(directory, CONFIG_FILES[i]);
if (shell.test("-f", filename)) {
return filename;
}
}
return null;
}
};

495
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/**
* @fileoverview Config initialization wizard.
* @author Ilya Volodin
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const util = require("util"),
inquirer = require("inquirer"),
ProgressBar = require("progress"),
autoconfig = require("./autoconfig.js"),
ConfigFile = require("./config-file"),
ConfigOps = require("./config-ops"),
getSourceCodeOfFiles = require("../util/source-code-util").getSourceCodeOfFiles,
npmUtil = require("../util/npm-util"),
recConfig = require("../../conf/eslint-recommended"),
log = require("../logging");
const debug = require("debug")("eslint:config-initializer");
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
/* istanbul ignore next: hard to test fs function */
/**
* Create .eslintrc file in the current working directory
* @param {Object} config object that contains user's answers
* @param {string} format The file format to write to.
* @returns {void}
*/
function writeFile(config, format) {
// default is .js
let extname = ".js";
if (format === "YAML") {
extname = ".yml";
} else if (format === "JSON") {
extname = ".json";
}
const installedESLint = config.installedESLint;
delete config.installedESLint;
ConfigFile.write(config, `./.eslintrc${extname}`);
log.info(`Successfully created .eslintrc${extname} file in ${process.cwd()}`);
if (installedESLint) {
log.info("ESLint was installed locally. We recommend using this local copy instead of your globally-installed copy.");
}
}
/**
* Synchronously install necessary plugins, configs, parsers, etc. based on the config
* @param {Object} config config object
* @returns {void}
*/
function installModules(config) {
let modules = [];
// Create a list of modules which should be installed based on config
if (config.plugins) {
modules = modules.concat(config.plugins.map(name => `eslint-plugin-${name}`));
}
if (config.extends && config.extends.indexOf("eslint:") === -1) {
modules.push(`eslint-config-${config.extends}`);
}
// Determine which modules are already installed
if (modules.length === 0) {
return;
}
// Add eslint to list in case user does not have it installed locally
modules.unshift("eslint");
const installStatus = npmUtil.checkDevDeps(modules);
// Install packages which aren't already installed
const modulesToInstall = Object.keys(installStatus).filter(module => {
const notInstalled = installStatus[module] === false;
if (module === "eslint" && notInstalled) {
log.info("Local ESLint installation not found.");
config.installedESLint = true;
}
return notInstalled;
});
if (modulesToInstall.length > 0) {
log.info(`Installing ${modulesToInstall.join(", ")}`);
npmUtil.installSyncSaveDev(modulesToInstall);
}
}
/**
* Set the `rules` of a config by examining a user's source code
*
* Note: This clones the config object and returns a new config to avoid mutating
* the original config parameter.
*
* @param {Object} answers answers received from inquirer
* @param {Object} config config object
* @returns {Object} config object with configured rules
*/
function configureRules(answers, config) {
const BAR_TOTAL = 20,
BAR_SOURCE_CODE_TOTAL = 4,
newConfig = Object.assign({}, config),
disabledConfigs = {};
let sourceCodes,
registry;
// Set up a progress bar, as this process can take a long time
const bar = new ProgressBar("Determining Config: :percent [:bar] :elapseds elapsed, eta :etas ", {
width: 30,
total: BAR_TOTAL
});
bar.tick(0); // Shows the progress bar
// Get the SourceCode of all chosen files
const patterns = answers.patterns.split(/[\s]+/);
try {
sourceCodes = getSourceCodeOfFiles(patterns, { baseConfig: newConfig, useEslintrc: false }, total => {
bar.tick((BAR_SOURCE_CODE_TOTAL / total));
});
} catch (e) {
log.info("\n");
throw e;
}
const fileQty = Object.keys(sourceCodes).length;
if (fileQty === 0) {
log.info("\n");
throw new Error("Automatic Configuration failed. No files were able to be parsed.");
}
// Create a registry of rule configs
registry = new autoconfig.Registry();
registry.populateFromCoreRules();
// Lint all files with each rule config in the registry
registry = registry.lintSourceCode(sourceCodes, newConfig, total => {
bar.tick((BAR_TOTAL - BAR_SOURCE_CODE_TOTAL) / total); // Subtract out ticks used at beginning
});
debug(`\nRegistry: ${util.inspect(registry.rules, { depth: null })}`);
// Create a list of recommended rules, because we don't want to disable them
const recRules = Object.keys(recConfig.rules).filter(ruleId => ConfigOps.isErrorSeverity(recConfig.rules[ruleId]));
// Find and disable rules which had no error-free configuration
const failingRegistry = registry.getFailingRulesRegistry();
Object.keys(failingRegistry.rules).forEach(ruleId => {
// If the rule is recommended, set it to error, otherwise disable it
disabledConfigs[ruleId] = (recRules.indexOf(ruleId) !== -1) ? 2 : 0;
});
// Now that we know which rules to disable, strip out configs with errors
registry = registry.stripFailingConfigs();
// If there is only one config that results in no errors for a rule, we should use it.
// createConfig will only add rules that have one configuration in the registry.
const singleConfigs = registry.createConfig().rules;
// The "sweet spot" for number of options in a config seems to be two (severity plus one option).
// Very often, a third option (usually an object) is available to address
// edge cases, exceptions, or unique situations. We will prefer to use a config with
// specificity of two.
const specTwoConfigs = registry.filterBySpecificity(2).createConfig().rules;
// Maybe a specific combination using all three options works
const specThreeConfigs = registry.filterBySpecificity(3).createConfig().rules;
// If all else fails, try to use the default (severity only)
const defaultConfigs = registry.filterBySpecificity(1).createConfig().rules;
// Combine configs in reverse priority order (later take precedence)
newConfig.rules = Object.assign({}, disabledConfigs, defaultConfigs, specThreeConfigs, specTwoConfigs, singleConfigs);
// Make sure progress bar has finished (floating point rounding)
bar.update(BAR_TOTAL);
// Log out some stats to let the user know what happened
const finalRuleIds = Object.keys(newConfig.rules);
const totalRules = finalRuleIds.length;
const enabledRules = finalRuleIds.filter(ruleId => (newConfig.rules[ruleId] !== 0)).length;
const resultMessage = [
`\nEnabled ${enabledRules} out of ${totalRules}`,
`rules based on ${fileQty}`,
`file${(fileQty === 1) ? "." : "s."}`
].join(" ");
log.info(resultMessage);
ConfigOps.normalizeToStrings(newConfig);
return newConfig;
}
/**
* process user's answers and create config object
* @param {Object} answers answers received from inquirer
* @returns {Object} config object
*/
function processAnswers(answers) {
let config = { rules: {}, env: {} };
if (answers.es6) {
config.env.es6 = true;
if (answers.modules) {
config.parserOptions = config.parserOptions || {};
config.parserOptions.sourceType = "module";
}
}
if (answers.commonjs) {
config.env.commonjs = true;
}
answers.env.forEach(env => {
config.env[env] = true;
});
if (answers.jsx) {
config.parserOptions = config.parserOptions || {};
config.parserOptions.ecmaFeatures = config.parserOptions.ecmaFeatures || {};
config.parserOptions.ecmaFeatures.jsx = true;
if (answers.react) {
config.plugins = ["react"];
config.parserOptions.ecmaFeatures.experimentalObjectRestSpread = true;
}
}
if (answers.source === "prompt") {
config.extends = "eslint:recommended";
config.rules.indent = ["error", answers.indent];
config.rules.quotes = ["error", answers.quotes];
config.rules["linebreak-style"] = ["error", answers.linebreak];
config.rules.semi = ["error", answers.semi ? "always" : "never"];
}
installModules(config);
if (answers.source === "auto") {
config = configureRules(answers, config);
config = autoconfig.extendFromRecommended(config);
}
ConfigOps.normalizeToStrings(config);
return config;
}
/**
* process user's style guide of choice and return an appropriate config object.
* @param {string} guide name of the chosen style guide
* @returns {Object} config object
*/
function getConfigForStyleGuide(guide) {
const guides = {
google: { extends: "google" },
airbnb: { extends: "airbnb", plugins: ["react", "jsx-a11y", "import"] },
"airbnb-base": { extends: "airbnb-base", plugins: ["import"] },
standard: { extends: "standard", plugins: ["standard", "promise"] }
};
if (!guides[guide]) {
throw new Error("You referenced an unsupported guide.");
}
installModules(guides[guide]);
return guides[guide];
}
/* istanbul ignore next: no need to test inquirer*/
/**
* Ask use a few questions on command prompt
* @param {Function} callback callback function when file has been written
* @returns {void}
*/
function promptUser(callback) {
let config;
inquirer.prompt([
{
type: "list",
name: "source",
message: "How would you like to configure ESLint?",
default: "prompt",
choices: [
{ name: "Answer questions about your style", value: "prompt" },
{ name: "Use a popular style guide", value: "guide" },
{ name: "Inspect your JavaScript file(s)", value: "auto" }
]
},
{
type: "list",
name: "styleguide",
message: "Which style guide do you want to follow?",
choices: [{ name: "Google", value: "google" }, { name: "Airbnb", value: "airbnb" }, { name: "Standard", value: "standard" }],
when(answers) {
answers.packageJsonExists = npmUtil.checkPackageJson();
return answers.source === "guide" && answers.packageJsonExists;
}
},
{
type: "confirm",
name: "airbnbReact",
message: "Do you use React?",
default: false,
when(answers) {
return answers.styleguide === "airbnb";
}
},
{
type: "input",
name: "patterns",
message: "Which file(s), path(s), or glob(s) should be examined?",
when(answers) {
return (answers.source === "auto");
},
validate(input) {
if (input.trim().length === 0 && input.trim() !== ",") {
return "You must tell us what code to examine. Try again.";
}
return true;
}
},
{
type: "list",
name: "format",
message: "What format do you want your config file to be in?",
default: "JavaScript",
choices: ["JavaScript", "YAML", "JSON"],
when(answers) {
return ((answers.source === "guide" && answers.packageJsonExists) || answers.source === "auto");
}
}
], earlyAnswers => {
// early exit if you are using a style guide
if (earlyAnswers.source === "guide") {
if (!earlyAnswers.packageJsonExists) {
log.info("A package.json is necessary to install plugins such as style guides. Run `npm init` to create a package.json file and try again.");
return;
}
if (earlyAnswers.styleguide === "airbnb" && !earlyAnswers.airbnbReact) {
earlyAnswers.styleguide = "airbnb-base";
}
try {
config = getConfigForStyleGuide(earlyAnswers.styleguide);
writeFile(config, earlyAnswers.format);
} catch (err) {
callback(err);
return;
}
return;
}
// continue with the questions otherwise...
inquirer.prompt([
{
type: "confirm",
name: "es6",
message: "Are you using ECMAScript 6 features?",
default: false
},
{
type: "confirm",
name: "modules",
message: "Are you using ES6 modules?",
default: false,
when(answers) {
return answers.es6 === true;
}
},
{
type: "checkbox",
name: "env",
message: "Where will your code run?",
default: ["browser"],
choices: [{ name: "Browser", value: "browser" }, { name: "Node", value: "node" }]
},
{
type: "confirm",
name: "commonjs",
message: "Do you use CommonJS?",
default: false,
when(answers) {
return answers.env.some(env => env === "browser");
}
},
{
type: "confirm",
name: "jsx",
message: "Do you use JSX?",
default: false
},
{
type: "confirm",
name: "react",
message: "Do you use React?",
default: false,
when(answers) {
return answers.jsx;
}
}
], secondAnswers => {
// early exit if you are using automatic style generation
if (earlyAnswers.source === "auto") {
try {
const combinedAnswers = Object.assign({}, earlyAnswers, secondAnswers);
config = processAnswers(combinedAnswers);
installModules(config);
writeFile(config, earlyAnswers.format);
} catch (err) {
callback(err);
return;
}
return;
}
// continue with the style questions otherwise...
inquirer.prompt([
{
type: "list",
name: "indent",
message: "What style of indentation do you use?",
default: "tab",
choices: [{ name: "Tabs", value: "tab" }, { name: "Spaces", value: 4 }]
},
{
type: "list",
name: "quotes",
message: "What quotes do you use for strings?",
default: "double",
choices: [{ name: "Double", value: "double" }, { name: "Single", value: "single" }]
},
{
type: "list",
name: "linebreak",
message: "What line endings do you use?",
default: "unix",
choices: [{ name: "Unix", value: "unix" }, { name: "Windows", value: "windows" }]
},
{
type: "confirm",
name: "semi",
message: "Do you require semicolons?",
default: true
},
{
type: "list",
name: "format",
message: "What format do you want your config file to be in?",
default: "JavaScript",
choices: ["JavaScript", "YAML", "JSON"]
}
], answers => {
try {
const totalAnswers = Object.assign({}, earlyAnswers, secondAnswers, answers);
config = processAnswers(totalAnswers);
installModules(config);
writeFile(config, answers.format);
} catch (err) {
callback(err); // eslint-disable-line callback-return
}
});
});
});
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
const init = {
getConfigForStyleGuide,
processAnswers,
/* istanbul ignore next */initializeConfig(callback) {
promptUser(callback);
}
};
module.exports = init;

272
static/js/ketcher2/node_modules/eslint/lib/config/config-ops.js generated vendored Normal file
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/**
* @fileoverview Config file operations. This file must be usable in the browser,
* so no Node-specific code can be here.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const Environments = require("./environments");
const debug = require("debug")("eslint:config-ops");
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
const RULE_SEVERITY_STRINGS = ["off", "warn", "error"],
RULE_SEVERITY = RULE_SEVERITY_STRINGS.reduce((map, value, index) => {
map[value] = index;
return map;
}, {}),
VALID_SEVERITIES = [0, 1, 2, "off", "warn", "error"];
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
/**
* Creates an empty configuration object suitable for merging as a base.
* @returns {Object} A configuration object.
*/
createEmptyConfig() {
return {
globals: {},
env: {},
rules: {},
parserOptions: {}
};
},
/**
* Creates an environment config based on the specified environments.
* @param {Object<string,boolean>} env The environment settings.
* @returns {Object} A configuration object with the appropriate rules and globals
* set.
*/
createEnvironmentConfig(env) {
const envConfig = this.createEmptyConfig();
if (env) {
envConfig.env = env;
Object.keys(env).filter(name => env[name]).forEach(name => {
const environment = Environments.get(name);
if (environment) {
debug(`Creating config for environment ${name}`);
if (environment.globals) {
Object.assign(envConfig.globals, environment.globals);
}
if (environment.parserOptions) {
Object.assign(envConfig.parserOptions, environment.parserOptions);
}
}
});
}
return envConfig;
},
/**
* Given a config with environment settings, applies the globals and
* ecmaFeatures to the configuration and returns the result.
* @param {Object} config The configuration information.
* @returns {Object} The updated configuration information.
*/
applyEnvironments(config) {
if (config.env && typeof config.env === "object") {
debug("Apply environment settings to config");
return this.merge(this.createEnvironmentConfig(config.env), config);
}
return config;
},
/**
* Merges two config objects. This will not only add missing keys, but will also modify values to match.
* @param {Object} target config object
* @param {Object} src config object. Overrides in this config object will take priority over base.
* @param {boolean} [combine] Whether to combine arrays or not
* @param {boolean} [isRule] Whether its a rule
* @returns {Object} merged config object.
*/
merge: function deepmerge(target, src, combine, isRule) {
/*
The MIT License (MIT)
Copyright (c) 2012 Nicholas Fisher
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
/*
* This code is taken from deepmerge repo
* (https://github.com/KyleAMathews/deepmerge)
* and modified to meet our needs.
*/
const array = Array.isArray(src) || Array.isArray(target);
let dst = array && [] || {};
combine = !!combine;
isRule = !!isRule;
if (array) {
target = target || [];
// src could be a string, so check for array
if (isRule && Array.isArray(src) && src.length > 1) {
dst = dst.concat(src);
} else {
dst = dst.concat(target);
}
if (typeof src !== "object" && !Array.isArray(src)) {
src = [src];
}
Object.keys(src).forEach((e, i) => {
e = src[i];
if (typeof dst[i] === "undefined") {
dst[i] = e;
} else if (typeof e === "object") {
if (isRule) {
dst[i] = e;
} else {
dst[i] = deepmerge(target[i], e, combine, isRule);
}
} else {
if (!combine) {
dst[i] = e;
} else {
if (dst.indexOf(e) === -1) {
dst.push(e);
}
}
}
});
} else {
if (target && typeof target === "object") {
Object.keys(target).forEach(key => {
dst[key] = target[key];
});
}
Object.keys(src).forEach(key => {
if (Array.isArray(src[key]) || Array.isArray(target[key])) {
dst[key] = deepmerge(target[key], src[key], key === "plugins", isRule);
} else if (typeof src[key] !== "object" || !src[key] || key === "exported" || key === "astGlobals") {
dst[key] = src[key];
} else {
dst[key] = deepmerge(target[key] || {}, src[key], combine, key === "rules");
}
});
}
return dst;
},
/**
* Converts new-style severity settings (off, warn, error) into old-style
* severity settings (0, 1, 2) for all rules. Assumption is that severity
* values have already been validated as correct.
* @param {Object} config The config object to normalize.
* @returns {void}
*/
normalize(config) {
if (config.rules) {
Object.keys(config.rules).forEach(ruleId => {
const ruleConfig = config.rules[ruleId];
if (typeof ruleConfig === "string") {
config.rules[ruleId] = RULE_SEVERITY[ruleConfig.toLowerCase()] || 0;
} else if (Array.isArray(ruleConfig) && typeof ruleConfig[0] === "string") {
ruleConfig[0] = RULE_SEVERITY[ruleConfig[0].toLowerCase()] || 0;
}
});
}
},
/**
* Converts old-style severity settings (0, 1, 2) into new-style
* severity settings (off, warn, error) for all rules. Assumption is that severity
* values have already been validated as correct.
* @param {Object} config The config object to normalize.
* @returns {void}
*/
normalizeToStrings(config) {
if (config.rules) {
Object.keys(config.rules).forEach(ruleId => {
const ruleConfig = config.rules[ruleId];
if (typeof ruleConfig === "number") {
config.rules[ruleId] = RULE_SEVERITY_STRINGS[ruleConfig] || RULE_SEVERITY_STRINGS[0];
} else if (Array.isArray(ruleConfig) && typeof ruleConfig[0] === "number") {
ruleConfig[0] = RULE_SEVERITY_STRINGS[ruleConfig[0]] || RULE_SEVERITY_STRINGS[0];
}
});
}
},
/**
* Determines if the severity for the given rule configuration represents an error.
* @param {int|string|Array} ruleConfig The configuration for an individual rule.
* @returns {boolean} True if the rule represents an error, false if not.
*/
isErrorSeverity(ruleConfig) {
let severity = Array.isArray(ruleConfig) ? ruleConfig[0] : ruleConfig;
if (typeof severity === "string") {
severity = RULE_SEVERITY[severity.toLowerCase()] || 0;
}
return (typeof severity === "number" && severity === 2);
},
/**
* Checks whether a given config has valid severity or not.
* @param {number|string|Array} ruleConfig - The configuration for an individual rule.
* @returns {boolean} `true` if the configuration has valid severity.
*/
isValidSeverity(ruleConfig) {
let severity = Array.isArray(ruleConfig) ? ruleConfig[0] : ruleConfig;
if (typeof severity === "string") {
severity = severity.toLowerCase();
}
return VALID_SEVERITIES.indexOf(severity) !== -1;
},
/**
* Checks whether every rule of a given config has valid severity or not.
* @param {Object} config - The configuration for rules.
* @returns {boolean} `true` if the configuration has valid severity.
*/
isEverySeverityValid(config) {
return Object.keys(config).every(ruleId => this.isValidSeverity(config[ruleId]));
}
};

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static/js/ketcher2/node_modules/eslint/lib/config/config-rule.js generated vendored Normal file
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/**
* @fileoverview Create configurations for a rule
* @author Ian VanSchooten
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rules = require("../rules"),
loadRules = require("../load-rules");
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
/**
* Wrap all of the elements of an array into arrays.
* @param {*[]} xs Any array.
* @returns {Array[]} An array of arrays.
*/
function explodeArray(xs) {
return xs.reduce((accumulator, x) => {
accumulator.push([x]);
return accumulator;
}, []);
}
/**
* Mix two arrays such that each element of the second array is concatenated
* onto each element of the first array.
*
* For example:
* combineArrays([a, [b, c]], [x, y]); // -> [[a, x], [a, y], [b, c, x], [b, c, y]]
*
* @param {array} arr1 The first array to combine.
* @param {array} arr2 The second array to combine.
* @returns {array} A mixture of the elements of the first and second arrays.
*/
function combineArrays(arr1, arr2) {
const res = [];
if (arr1.length === 0) {
return explodeArray(arr2);
}
if (arr2.length === 0) {
return explodeArray(arr1);
}
arr1.forEach(x1 => {
arr2.forEach(x2 => {
res.push([].concat(x1, x2));
});
});
return res;
}
/**
* Group together valid rule configurations based on object properties
*
* e.g.:
* groupByProperty([
* {before: true},
* {before: false},
* {after: true},
* {after: false}
* ]);
*
* will return:
* [
* [{before: true}, {before: false}],
* [{after: true}, {after: false}]
* ]
*
* @param {Object[]} objects Array of objects, each with one property/value pair
* @returns {Array[]} Array of arrays of objects grouped by property
*/
function groupByProperty(objects) {
const groupedObj = objects.reduce((accumulator, obj) => {
const prop = Object.keys(obj)[0];
accumulator[prop] = accumulator[prop] ? accumulator[prop].concat(obj) : [obj];
return accumulator;
}, {});
return Object.keys(groupedObj).map(prop => groupedObj[prop]);
}
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
/**
* Configuration settings for a rule.
*
* A configuration can be a single number (severity), or an array where the first
* element in the array is the severity, and is the only required element.
* Configs may also have one or more additional elements to specify rule
* configuration or options.
*
* @typedef {array|number} ruleConfig
* @param {number} 0 The rule's severity (0, 1, 2).
*/
/**
* Object whose keys are rule names and values are arrays of valid ruleConfig items
* which should be linted against the target source code to determine error counts.
* (a ruleConfigSet.ruleConfigs).
*
* e.g. rulesConfig = {
* "comma-dangle": [2, [2, "always"], [2, "always-multiline"], [2, "never"]],
* "no-console": [2]
* }
* @typedef rulesConfig
*/
/**
* Create valid rule configurations by combining two arrays,
* with each array containing multiple objects each with a
* single property/value pair and matching properties.
*
* e.g.:
* combinePropertyObjects(
* [{before: true}, {before: false}],
* [{after: true}, {after: false}]
* );
*
* will return:
* [
* {before: true, after: true},
* {before: true, after: false},
* {before: false, after: true},
* {before: false, after: false}
* ]
*
* @param {Object[]} objArr1 Single key/value objects, all with the same key
* @param {Object[]} objArr2 Single key/value objects, all with another key
* @returns {Object[]} Combined objects for each combination of input properties and values
*/
function combinePropertyObjects(objArr1, objArr2) {
const res = [];
if (objArr1.length === 0) {
return objArr2;
}
if (objArr2.length === 0) {
return objArr1;
}
objArr1.forEach(obj1 => {
objArr2.forEach(obj2 => {
const combinedObj = {};
const obj1Props = Object.keys(obj1);
const obj2Props = Object.keys(obj2);
obj1Props.forEach(prop1 => {
combinedObj[prop1] = obj1[prop1];
});
obj2Props.forEach(prop2 => {
combinedObj[prop2] = obj2[prop2];
});
res.push(combinedObj);
});
});
return res;
}
/**
* Creates a new instance of a rule configuration set
*
* A rule configuration set is an array of configurations that are valid for a
* given rule. For example, the configuration set for the "semi" rule could be:
*
* ruleConfigSet.ruleConfigs // -> [[2], [2, "always"], [2, "never"]]
*
* Rule configuration set class
*/
class RuleConfigSet {
/**
* @param {ruleConfig[]} configs Valid rule configurations
*/
constructor(configs) {
/**
* Stored valid rule configurations for this instance
* @type {array}
*/
this.ruleConfigs = configs || [];
}
/**
* Add a severity level to the front of all configs in the instance.
* This should only be called after all configs have been added to the instance.
*
* @param {number} [severity=2] The level of severity for the rule (0, 1, 2)
* @returns {void}
*/
addErrorSeverity(severity) {
severity = severity || 2;
this.ruleConfigs = this.ruleConfigs.map(config => {
config.unshift(severity);
return config;
});
// Add a single config at the beginning consisting of only the severity
this.ruleConfigs.unshift(severity);
}
/**
* Add rule configs from an array of strings (schema enums)
* @param {string[]} enums Array of valid rule options (e.g. ["always", "never"])
* @returns {void}
*/
addEnums(enums) {
this.ruleConfigs = this.ruleConfigs.concat(combineArrays(this.ruleConfigs, enums));
}
/**
* Add rule configurations from a schema object
* @param {Object} obj Schema item with type === "object"
* @returns {boolean} true if at least one schema for the object could be generated, false otherwise
*/
addObject(obj) {
const objectConfigSet = {
objectConfigs: [],
add(property, values) {
for (let idx = 0; idx < values.length; idx++) {
const optionObj = {};
optionObj[property] = values[idx];
this.objectConfigs.push(optionObj);
}
},
combine() {
this.objectConfigs = groupByProperty(this.objectConfigs).reduce((accumulator, objArr) => combinePropertyObjects(accumulator, objArr), []);
}
};
/*
* The object schema could have multiple independent properties.
* If any contain enums or booleans, they can be added and then combined
*/
Object.keys(obj.properties).forEach(prop => {
if (obj.properties[prop].enum) {
objectConfigSet.add(prop, obj.properties[prop].enum);
}
if (obj.properties[prop].type && obj.properties[prop].type === "boolean") {
objectConfigSet.add(prop, [true, false]);
}
});
objectConfigSet.combine();
if (objectConfigSet.objectConfigs.length > 0) {
this.ruleConfigs = this.ruleConfigs.concat(combineArrays(this.ruleConfigs, objectConfigSet.objectConfigs));
return true;
}
return false;
}
}
/**
* Generate valid rule configurations based on a schema object
* @param {Object} schema A rule's schema object
* @returns {array[]} Valid rule configurations
*/
function generateConfigsFromSchema(schema) {
const configSet = new RuleConfigSet();
if (Array.isArray(schema)) {
for (const opt of schema) {
if (opt.enum) {
configSet.addEnums(opt.enum);
} else if (opt.type && opt.type === "object") {
if (!configSet.addObject(opt)) {
break;
}
// TODO (IanVS): support oneOf
} else {
// If we don't know how to fill in this option, don't fill in any of the following options.
break;
}
}
}
configSet.addErrorSeverity();
return configSet.ruleConfigs;
}
/**
* Generate possible rule configurations for all of the core rules
* @returns {rulesConfig} Hash of rule names and arrays of possible configurations
*/
function createCoreRuleConfigs() {
const ruleList = loadRules();
return Object.keys(ruleList).reduce((accumulator, id) => {
const rule = rules.get(id);
const schema = (typeof rule === "function") ? rule.schema : rule.meta.schema;
accumulator[id] = generateConfigsFromSchema(schema);
return accumulator;
}, {});
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
generateConfigsFromSchema,
createCoreRuleConfigs
};

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/**
* @fileoverview Validates configs.
* @author Brandon Mills
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rules = require("../rules"),
Environments = require("./environments"),
schemaValidator = require("is-my-json-valid"),
util = require("util");
const validators = {
rules: Object.create(null)
};
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
/**
* Gets a complete options schema for a rule.
* @param {string} id The rule's unique name.
* @returns {Object} JSON Schema for the rule's options.
*/
function getRuleOptionsSchema(id) {
const rule = rules.get(id),
schema = rule && rule.schema || rule && rule.meta && rule.meta.schema;
// Given a tuple of schemas, insert warning level at the beginning
if (Array.isArray(schema)) {
if (schema.length) {
return {
type: "array",
items: schema,
minItems: 0,
maxItems: schema.length
};
}
return {
type: "array",
minItems: 0,
maxItems: 0
};
}
// Given a full schema, leave it alone
return schema || null;
}
/**
* Validates a rule's severity and returns the severity value. Throws an error if the severity is invalid.
* @param {options} options The given options for the rule.
* @returns {number|string} The rule's severity value
*/
function validateRuleSeverity(options) {
const severity = Array.isArray(options) ? options[0] : options;
if (severity !== 0 && severity !== 1 && severity !== 2 && !(typeof severity === "string" && /^(?:off|warn|error)$/i.test(severity))) {
throw new Error(`\tSeverity should be one of the following: 0 = off, 1 = warn, 2 = error (you passed '${util.inspect(severity).replace(/'/g, "\"").replace(/\n/g, "")}').\n`);
}
return severity;
}
/**
* Validates the non-severity options passed to a rule, based on its schema.
* @param {string} id The rule's unique name
* @param {array} localOptions The options for the rule, excluding severity
* @returns {void}
*/
function validateRuleSchema(id, localOptions) {
const schema = getRuleOptionsSchema(id);
if (!validators.rules[id] && schema) {
validators.rules[id] = schemaValidator(schema, { verbose: true });
}
const validateRule = validators.rules[id];
if (validateRule) {
validateRule(localOptions);
if (validateRule.errors) {
throw new Error(validateRule.errors.map(error => `\tValue "${error.value}" ${error.message}.\n`).join(""));
}
}
}
/**
* Validates a rule's options against its schema.
* @param {string} id The rule's unique name.
* @param {array|number} options The given options for the rule.
* @param {string} source The name of the configuration source.
* @returns {void}
*/
function validateRuleOptions(id, options, source) {
try {
const severity = validateRuleSeverity(options);
if (severity !== 0 && !(typeof severity === "string" && severity.toLowerCase() === "off")) {
validateRuleSchema(id, Array.isArray(options) ? options.slice(1) : []);
}
} catch (err) {
throw new Error(`${source}:\n\tConfiguration for rule "${id}" is invalid:\n${err.message}`);
}
}
/**
* Validates an environment object
* @param {Object} environment The environment config object to validate.
* @param {string} source The location to report with any errors.
* @returns {void}
*/
function validateEnvironment(environment, source) {
// not having an environment is ok
if (!environment) {
return;
}
if (Array.isArray(environment)) {
throw new Error("Environment must not be an array");
}
if (typeof environment === "object") {
Object.keys(environment).forEach(env => {
if (!Environments.get(env)) {
const message = [
source, ":\n",
"\tEnvironment key \"", env, "\" is unknown\n"
];
throw new Error(message.join(""));
}
});
} else {
throw new Error("Environment must be an object");
}
}
/**
* Validates an entire config object.
* @param {Object} config The config object to validate.
* @param {string} source The location to report with any errors.
* @returns {void}
*/
function validate(config, source) {
if (typeof config.rules === "object") {
Object.keys(config.rules).forEach(id => {
validateRuleOptions(id, config.rules[id], source);
});
}
validateEnvironment(config.env, source);
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
getRuleOptionsSchema,
validate,
validateRuleOptions
};

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/**
* @fileoverview Environments manager
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const envs = require("../../conf/environments");
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
let environments = new Map();
/**
* Loads the default environments.
* @returns {void}
* @private
*/
function load() {
Object.keys(envs).forEach(envName => {
environments.set(envName, envs[envName]);
});
}
// always load default environments upfront
load();
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
load,
/**
* Gets the environment with the given name.
* @param {string} name The name of the environment to retrieve.
* @returns {Object?} The environment object or null if not found.
*/
get(name) {
return environments.get(name) || null;
},
/**
* Defines an environment.
* @param {string} name The name of the environment.
* @param {Object} env The environment settings.
* @returns {void}
*/
define(name, env) {
environments.set(name, env);
},
/**
* Imports all environments from a plugin.
* @param {Object} plugin The plugin object.
* @param {string} pluginName The name of the plugin.
* @returns {void}
*/
importPlugin(plugin, pluginName) {
if (plugin.environments) {
Object.keys(plugin.environments).forEach(envName => {
this.define(`${pluginName}/${envName}`, plugin.environments[envName]);
});
}
},
/**
* Resets all environments. Only use for tests!
* @returns {void}
*/
testReset() {
environments = new Map();
load();
}
};

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/**
* @fileoverview Plugins manager
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const Environments = require("./environments"),
Rules = require("../rules");
const debug = require("debug")("eslint:plugins");
//------------------------------------------------------------------------------
// Private
//------------------------------------------------------------------------------
let plugins = Object.create(null);
const PLUGIN_NAME_PREFIX = "eslint-plugin-",
NAMESPACE_REGEX = /^@.*\//i;
/**
* Removes the prefix `eslint-plugin-` from a plugin name.
* @param {string} pluginName The name of the plugin which may have the prefix.
* @returns {string} The name of the plugin without prefix.
*/
function removePrefix(pluginName) {
return pluginName.indexOf(PLUGIN_NAME_PREFIX) === 0 ? pluginName.substring(PLUGIN_NAME_PREFIX.length) : pluginName;
}
/**
* Gets the scope (namespace) of a plugin.
* @param {string} pluginName The name of the plugin which may have the prefix.
* @returns {string} The name of the plugins namepace if it has one.
*/
function getNamespace(pluginName) {
return pluginName.match(NAMESPACE_REGEX) ? pluginName.match(NAMESPACE_REGEX)[0] : "";
}
/**
* Removes the namespace from a plugin name.
* @param {string} pluginName The name of the plugin which may have the prefix.
* @returns {string} The name of the plugin without the namespace.
*/
function removeNamespace(pluginName) {
return pluginName.replace(NAMESPACE_REGEX, "");
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = {
removePrefix,
getNamespace,
removeNamespace,
/**
* Defines a plugin with a given name rather than loading from disk.
* @param {string} pluginName The name of the plugin to load.
* @param {Object} plugin The plugin object.
* @returns {void}
*/
define(pluginName, plugin) {
const pluginNamespace = getNamespace(pluginName),
pluginNameWithoutNamespace = removeNamespace(pluginName),
pluginNameWithoutPrefix = removePrefix(pluginNameWithoutNamespace),
shortName = pluginNamespace + pluginNameWithoutPrefix;
// load up environments and rules
plugins[shortName] = plugin;
Environments.importPlugin(plugin, shortName);
Rules.importPlugin(plugin, shortName);
// load up environments and rules for the name that '@scope/' was omitted
// 3 lines below will be removed by 4.0.0
plugins[pluginNameWithoutPrefix] = plugin;
Environments.importPlugin(plugin, pluginNameWithoutPrefix);
Rules.importPlugin(plugin, pluginNameWithoutPrefix);
},
/**
* Gets a plugin with the given name.
* @param {string} pluginName The name of the plugin to retrieve.
* @returns {Object} The plugin or null if not loaded.
*/
get(pluginName) {
return plugins[pluginName] || null;
},
/**
* Returns all plugins that are loaded.
* @returns {Object} The plugins cache.
*/
getAll() {
return plugins;
},
/**
* Loads a plugin with the given name.
* @param {string} pluginName The name of the plugin to load.
* @returns {void}
* @throws {Error} If the plugin cannot be loaded.
*/
load(pluginName) {
const pluginNamespace = getNamespace(pluginName),
pluginNameWithoutNamespace = removeNamespace(pluginName),
pluginNameWithoutPrefix = removePrefix(pluginNameWithoutNamespace),
shortName = pluginNamespace + pluginNameWithoutPrefix,
longName = pluginNamespace + PLUGIN_NAME_PREFIX + pluginNameWithoutPrefix;
let plugin = null;
if (pluginName.match(/\s+/)) {
const whitespaceError = new Error(`Whitespace found in plugin name '${pluginName}'`);
whitespaceError.messageTemplate = "whitespace-found";
whitespaceError.messageData = {
pluginName: longName
};
throw whitespaceError;
}
if (!plugins[shortName]) {
try {
plugin = require(longName);
} catch (pluginLoadErr) {
try {
// Check whether the plugin exists
require.resolve(longName);
} catch (missingPluginErr) {
// If the plugin can't be resolved, display the missing plugin error (usually a config or install error)
debug(`Failed to load plugin ${longName}.`);
missingPluginErr.message = `Failed to load plugin ${pluginName}: ${missingPluginErr.message}`;
missingPluginErr.messageTemplate = "plugin-missing";
missingPluginErr.messageData = {
pluginName: longName
};
throw missingPluginErr;
}
// Otherwise, the plugin exists and is throwing on module load for some reason, so print the stack trace.
throw pluginLoadErr;
}
this.define(pluginName, plugin);
}
},
/**
* Loads all plugins from an array.
* @param {string[]} pluginNames An array of plugins names.
* @returns {void}
* @throws {Error} If a plugin cannot be loaded.
*/
loadAll(pluginNames) {
pluginNames.forEach(this.load, this);
},
/**
* Resets plugin information. Use for tests only.
* @returns {void}
*/
testReset() {
plugins = Object.create(null);
}
};