520 lines
18 KiB
JavaScript
520 lines
18 KiB
JavaScript
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/**
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* @fileoverview `CascadingConfigArrayFactory` class.
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*
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* `CascadingConfigArrayFactory` class has a responsibility:
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*
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* 1. Handles cascading of config files.
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*
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* It provides two methods:
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*
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* - `getConfigArrayForFile(filePath)`
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* Get the corresponded configuration of a given file. This method doesn't
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* throw even if the given file didn't exist.
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* - `clearCache()`
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* Clear the internal cache. You have to call this method when
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* `additionalPluginPool` was updated if `baseConfig` or `cliConfig` depends
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* on the additional plugins. (`CLIEngine#addPlugin()` method calls this.)
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*
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* @author Toru Nagashima <https://github.com/mysticatea>
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const os = require("os");
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const path = require("path");
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const ConfigValidator = require("./shared/config-validator");
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const { emitDeprecationWarning } = require("./shared/deprecation-warnings");
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const { ConfigArrayFactory } = require("./config-array-factory");
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const { ConfigArray, ConfigDependency, IgnorePattern } = require("./config-array");
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const debug = require("debug")("eslintrc:cascading-config-array-factory");
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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// Define types for VSCode IntelliSense.
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/** @typedef {import("./shared/types").ConfigData} ConfigData */
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/** @typedef {import("./shared/types").Parser} Parser */
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/** @typedef {import("./shared/types").Plugin} Plugin */
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/** @typedef {import("./shared/types").Rule} Rule */
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/** @typedef {ReturnType<ConfigArrayFactory["create"]>} ConfigArray */
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/**
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* @typedef {Object} CascadingConfigArrayFactoryOptions
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* @property {Map<string,Plugin>} [additionalPluginPool] The map for additional plugins.
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* @property {ConfigData} [baseConfig] The config by `baseConfig` option.
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* @property {ConfigData} [cliConfig] The config by CLI options (`--env`, `--global`, `--ignore-pattern`, `--parser`, `--parser-options`, `--plugin`, and `--rule`). CLI options overwrite the setting in config files.
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* @property {string} [cwd] The base directory to start lookup.
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* @property {string} [ignorePath] The path to the alternative file of `.eslintignore`.
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* @property {string[]} [rulePaths] The value of `--rulesdir` option.
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* @property {string} [specificConfigPath] The value of `--config` option.
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* @property {boolean} [useEslintrc] if `false` then it doesn't load config files.
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* @property {Function} loadRules The function to use to load rules.
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* @property {Map<string,Rule>} builtInRules The rules that are built in to ESLint.
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* @property {Object} [resolver=ModuleResolver] The module resolver object.
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* @property {string} eslintAllPath The path to the definitions for eslint:all.
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* @property {string} eslintRecommendedPath The path to the definitions for eslint:recommended.
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*/
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/**
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* @typedef {Object} CascadingConfigArrayFactoryInternalSlots
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* @property {ConfigArray} baseConfigArray The config array of `baseConfig` option.
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* @property {ConfigData} baseConfigData The config data of `baseConfig` option. This is used to reset `baseConfigArray`.
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* @property {ConfigArray} cliConfigArray The config array of CLI options.
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* @property {ConfigData} cliConfigData The config data of CLI options. This is used to reset `cliConfigArray`.
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* @property {ConfigArrayFactory} configArrayFactory The factory for config arrays.
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* @property {Map<string, ConfigArray>} configCache The cache from directory paths to config arrays.
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* @property {string} cwd The base directory to start lookup.
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* @property {WeakMap<ConfigArray, ConfigArray>} finalizeCache The cache from config arrays to finalized config arrays.
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* @property {string} [ignorePath] The path to the alternative file of `.eslintignore`.
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* @property {string[]|null} rulePaths The value of `--rulesdir` option. This is used to reset `baseConfigArray`.
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* @property {string|null} specificConfigPath The value of `--config` option. This is used to reset `cliConfigArray`.
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* @property {boolean} useEslintrc if `false` then it doesn't load config files.
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* @property {Function} loadRules The function to use to load rules.
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* @property {Map<string,Rule>} builtInRules The rules that are built in to ESLint.
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* @property {Object} [resolver=ModuleResolver] The module resolver object.
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* @property {string} eslintAllPath The path to the definitions for eslint:all.
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* @property {string} eslintRecommendedPath The path to the definitions for eslint:recommended.
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*/
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/** @type {WeakMap<CascadingConfigArrayFactory, CascadingConfigArrayFactoryInternalSlots>} */
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const internalSlotsMap = new WeakMap();
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/**
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* Create the config array from `baseConfig` and `rulePaths`.
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* @param {CascadingConfigArrayFactoryInternalSlots} slots The slots.
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* @returns {ConfigArray} The config array of the base configs.
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*/
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function createBaseConfigArray({
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configArrayFactory,
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baseConfigData,
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rulePaths,
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cwd,
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loadRules
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}) {
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const baseConfigArray = configArrayFactory.create(
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baseConfigData,
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{ name: "BaseConfig" }
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);
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/*
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* Create the config array element for the default ignore patterns.
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* This element has `ignorePattern` property that ignores the default
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* patterns in the current working directory.
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*/
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baseConfigArray.unshift(configArrayFactory.create(
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{ ignorePatterns: IgnorePattern.DefaultPatterns },
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{ name: "DefaultIgnorePattern" }
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)[0]);
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/*
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* Load rules `--rulesdir` option as a pseudo plugin.
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* Use a pseudo plugin to define rules of `--rulesdir`, so we can validate
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* the rule's options with only information in the config array.
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*/
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if (rulePaths && rulePaths.length > 0) {
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baseConfigArray.push({
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type: "config",
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name: "--rulesdir",
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filePath: "",
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plugins: {
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"": new ConfigDependency({
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definition: {
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rules: rulePaths.reduce(
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(map, rulesPath) => Object.assign(
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map,
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loadRules(rulesPath, cwd)
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),
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{}
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)
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},
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filePath: "",
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id: "",
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importerName: "--rulesdir",
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importerPath: ""
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})
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}
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});
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}
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return baseConfigArray;
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}
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/**
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* Create the config array from CLI options.
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* @param {CascadingConfigArrayFactoryInternalSlots} slots The slots.
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* @returns {ConfigArray} The config array of the base configs.
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*/
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function createCLIConfigArray({
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cliConfigData,
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configArrayFactory,
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cwd,
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ignorePath,
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specificConfigPath
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}) {
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const cliConfigArray = configArrayFactory.create(
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cliConfigData,
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{ name: "CLIOptions" }
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);
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cliConfigArray.unshift(
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...(ignorePath
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? configArrayFactory.loadESLintIgnore(ignorePath)
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: configArrayFactory.loadDefaultESLintIgnore())
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);
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if (specificConfigPath) {
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cliConfigArray.unshift(
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...configArrayFactory.loadFile(
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specificConfigPath,
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{ name: "--config", basePath: cwd }
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)
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);
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}
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return cliConfigArray;
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}
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/**
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* The error type when there are files matched by a glob, but all of them have been ignored.
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*/
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class ConfigurationNotFoundError extends Error {
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// eslint-disable-next-line jsdoc/require-description
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/**
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* @param {string} directoryPath The directory path.
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*/
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constructor(directoryPath) {
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super(`No ESLint configuration found in ${directoryPath}.`);
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this.messageTemplate = "no-config-found";
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this.messageData = { directoryPath };
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}
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}
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/**
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* This class provides the functionality that enumerates every file which is
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* matched by given glob patterns and that configuration.
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*/
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class CascadingConfigArrayFactory {
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/**
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* Initialize this enumerator.
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* @param {CascadingConfigArrayFactoryOptions} options The options.
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*/
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constructor({
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additionalPluginPool = new Map(),
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baseConfig: baseConfigData = null,
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cliConfig: cliConfigData = null,
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cwd = process.cwd(),
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ignorePath,
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resolvePluginsRelativeTo,
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rulePaths = [],
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specificConfigPath = null,
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useEslintrc = true,
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builtInRules = new Map(),
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loadRules,
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resolver,
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eslintRecommendedPath,
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eslintAllPath
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} = {}) {
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const configArrayFactory = new ConfigArrayFactory({
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additionalPluginPool,
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cwd,
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resolvePluginsRelativeTo,
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builtInRules,
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resolver,
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eslintRecommendedPath,
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eslintAllPath
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});
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internalSlotsMap.set(this, {
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baseConfigArray: createBaseConfigArray({
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baseConfigData,
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configArrayFactory,
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cwd,
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rulePaths,
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loadRules,
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resolver
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}),
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baseConfigData,
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cliConfigArray: createCLIConfigArray({
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cliConfigData,
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configArrayFactory,
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cwd,
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ignorePath,
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specificConfigPath
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}),
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cliConfigData,
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configArrayFactory,
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configCache: new Map(),
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cwd,
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finalizeCache: new WeakMap(),
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ignorePath,
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rulePaths,
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specificConfigPath,
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useEslintrc,
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builtInRules,
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loadRules
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});
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}
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/**
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* The path to the current working directory.
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* This is used by tests.
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* @type {string}
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*/
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get cwd() {
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const { cwd } = internalSlotsMap.get(this);
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return cwd;
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}
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/**
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* Get the config array of a given file.
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* If `filePath` was not given, it returns the config which contains only
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* `baseConfigData` and `cliConfigData`.
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* @param {string} [filePath] The file path to a file.
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* @param {Object} [options] The options.
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* @param {boolean} [options.ignoreNotFoundError] If `true` then it doesn't throw `ConfigurationNotFoundError`.
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* @returns {ConfigArray} The config array of the file.
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*/
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getConfigArrayForFile(filePath, { ignoreNotFoundError = false } = {}) {
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const {
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baseConfigArray,
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cliConfigArray,
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cwd
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} = internalSlotsMap.get(this);
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if (!filePath) {
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return new ConfigArray(...baseConfigArray, ...cliConfigArray);
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}
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const directoryPath = path.dirname(path.resolve(cwd, filePath));
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debug(`Load config files for ${directoryPath}.`);
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return this._finalizeConfigArray(
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this._loadConfigInAncestors(directoryPath),
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directoryPath,
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ignoreNotFoundError
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);
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}
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/**
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* Set the config data to override all configs.
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* Require to call `clearCache()` method after this method is called.
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* @param {ConfigData} configData The config data to override all configs.
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* @returns {void}
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*/
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setOverrideConfig(configData) {
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const slots = internalSlotsMap.get(this);
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slots.cliConfigData = configData;
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}
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/**
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* Clear config cache.
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* @returns {void}
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*/
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clearCache() {
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const slots = internalSlotsMap.get(this);
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slots.baseConfigArray = createBaseConfigArray(slots);
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slots.cliConfigArray = createCLIConfigArray(slots);
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slots.configCache.clear();
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}
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/**
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* Load and normalize config files from the ancestor directories.
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* @param {string} directoryPath The path to a leaf directory.
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* @param {boolean} configsExistInSubdirs `true` if configurations exist in subdirectories.
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* @returns {ConfigArray} The loaded config.
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* @private
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*/
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_loadConfigInAncestors(directoryPath, configsExistInSubdirs = false) {
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const {
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baseConfigArray,
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configArrayFactory,
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configCache,
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cwd,
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useEslintrc
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} = internalSlotsMap.get(this);
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if (!useEslintrc) {
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return baseConfigArray;
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}
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let configArray = configCache.get(directoryPath);
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// Hit cache.
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if (configArray) {
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debug(`Cache hit: ${directoryPath}.`);
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return configArray;
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}
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debug(`No cache found: ${directoryPath}.`);
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const homePath = os.homedir();
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// Consider this is root.
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if (directoryPath === homePath && cwd !== homePath) {
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debug("Stop traversing because of considered root.");
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if (configsExistInSubdirs) {
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const filePath = ConfigArrayFactory.getPathToConfigFileInDirectory(directoryPath);
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if (filePath) {
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emitDeprecationWarning(
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filePath,
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"ESLINT_PERSONAL_CONFIG_SUPPRESS"
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);
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}
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}
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return this._cacheConfig(directoryPath, baseConfigArray);
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}
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// Load the config on this directory.
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try {
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configArray = configArrayFactory.loadInDirectory(directoryPath);
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} catch (error) {
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/* istanbul ignore next */
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if (error.code === "EACCES") {
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debug("Stop traversing because of 'EACCES' error.");
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||
|
|
return this._cacheConfig(directoryPath, baseConfigArray);
|
||
|
|
}
|
||
|
|
throw error;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (configArray.length > 0 && configArray.isRoot()) {
|
||
|
|
debug("Stop traversing because of 'root:true'.");
|
||
|
|
configArray.unshift(...baseConfigArray);
|
||
|
|
return this._cacheConfig(directoryPath, configArray);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Load from the ancestors and merge it.
|
||
|
|
const parentPath = path.dirname(directoryPath);
|
||
|
|
const parentConfigArray = parentPath && parentPath !== directoryPath
|
||
|
|
? this._loadConfigInAncestors(
|
||
|
|
parentPath,
|
||
|
|
configsExistInSubdirs || configArray.length > 0
|
||
|
|
)
|
||
|
|
: baseConfigArray;
|
||
|
|
|
||
|
|
if (configArray.length > 0) {
|
||
|
|
configArray.unshift(...parentConfigArray);
|
||
|
|
} else {
|
||
|
|
configArray = parentConfigArray;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Cache and return.
|
||
|
|
return this._cacheConfig(directoryPath, configArray);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Freeze and cache a given config.
|
||
|
|
* @param {string} directoryPath The path to a directory as a cache key.
|
||
|
|
* @param {ConfigArray} configArray The config array as a cache value.
|
||
|
|
* @returns {ConfigArray} The `configArray` (frozen).
|
||
|
|
*/
|
||
|
|
_cacheConfig(directoryPath, configArray) {
|
||
|
|
const { configCache } = internalSlotsMap.get(this);
|
||
|
|
|
||
|
|
Object.freeze(configArray);
|
||
|
|
configCache.set(directoryPath, configArray);
|
||
|
|
|
||
|
|
return configArray;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Finalize a given config array.
|
||
|
|
* Concatenate `--config` and other CLI options.
|
||
|
|
* @param {ConfigArray} configArray The parent config array.
|
||
|
|
* @param {string} directoryPath The path to the leaf directory to find config files.
|
||
|
|
* @param {boolean} ignoreNotFoundError If `true` then it doesn't throw `ConfigurationNotFoundError`.
|
||
|
|
* @returns {ConfigArray} The loaded config.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
_finalizeConfigArray(configArray, directoryPath, ignoreNotFoundError) {
|
||
|
|
const {
|
||
|
|
cliConfigArray,
|
||
|
|
configArrayFactory,
|
||
|
|
finalizeCache,
|
||
|
|
useEslintrc,
|
||
|
|
builtInRules
|
||
|
|
} = internalSlotsMap.get(this);
|
||
|
|
|
||
|
|
let finalConfigArray = finalizeCache.get(configArray);
|
||
|
|
|
||
|
|
if (!finalConfigArray) {
|
||
|
|
finalConfigArray = configArray;
|
||
|
|
|
||
|
|
// Load the personal config if there are no regular config files.
|
||
|
|
if (
|
||
|
|
useEslintrc &&
|
||
|
|
configArray.every(c => !c.filePath) &&
|
||
|
|
cliConfigArray.every(c => !c.filePath) // `--config` option can be a file.
|
||
|
|
) {
|
||
|
|
const homePath = os.homedir();
|
||
|
|
|
||
|
|
debug("Loading the config file of the home directory:", homePath);
|
||
|
|
|
||
|
|
const personalConfigArray = configArrayFactory.loadInDirectory(
|
||
|
|
homePath,
|
||
|
|
{ name: "PersonalConfig" }
|
||
|
|
);
|
||
|
|
|
||
|
|
if (
|
||
|
|
personalConfigArray.length > 0 &&
|
||
|
|
!directoryPath.startsWith(homePath)
|
||
|
|
) {
|
||
|
|
const lastElement =
|
||
|
|
personalConfigArray[personalConfigArray.length - 1];
|
||
|
|
|
||
|
|
emitDeprecationWarning(
|
||
|
|
lastElement.filePath,
|
||
|
|
"ESLINT_PERSONAL_CONFIG_LOAD"
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
finalConfigArray = finalConfigArray.concat(personalConfigArray);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Apply CLI options.
|
||
|
|
if (cliConfigArray.length > 0) {
|
||
|
|
finalConfigArray = finalConfigArray.concat(cliConfigArray);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Validate rule settings and environments.
|
||
|
|
const validator = new ConfigValidator({
|
||
|
|
builtInRules
|
||
|
|
});
|
||
|
|
|
||
|
|
validator.validateConfigArray(finalConfigArray);
|
||
|
|
|
||
|
|
// Cache it.
|
||
|
|
Object.freeze(finalConfigArray);
|
||
|
|
finalizeCache.set(configArray, finalConfigArray);
|
||
|
|
|
||
|
|
debug(
|
||
|
|
"Configuration was determined: %o on %s",
|
||
|
|
finalConfigArray,
|
||
|
|
directoryPath
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// At least one element (the default ignore patterns) exists.
|
||
|
|
if (!ignoreNotFoundError && useEslintrc && finalConfigArray.length <= 1) {
|
||
|
|
throw new ConfigurationNotFoundError(directoryPath);
|
||
|
|
}
|
||
|
|
|
||
|
|
return finalConfigArray;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Public Interface
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
module.exports = { CascadingConfigArrayFactory };
|