update required modules

node_modules/@babel/types/lib/modifications/typescript/removeTypeDuplicates.js

@@ -7,9 +7,13 @@ exports.default = removeTypeDuplicates;
 
 var _generated = require("../../validators/generated");
 
+function getQualifiedName(node) {
+  return (0, _generated.isIdentifier)(node) ? node.name : `${node.right.name}.${getQualifiedName(node.left)}`;
+}
+
 function removeTypeDuplicates(nodes) {
-  const generics = {};
-  const bases = {};
+  const generics = new Map();
+  const bases = new Map();
   const typeGroups = new Set();
   const types = [];
 
@@ -26,7 +30,7 @@ function removeTypeDuplicates(nodes) {
     }
 
     if ((0, _generated.isTSBaseType)(node)) {
-      bases[node.type] = node;
+      bases.set(node.type, node);
       continue;
     }
 
@@ -39,15 +43,35 @@ function removeTypeDuplicates(nodes) {
       continue;
     }
 
+    if ((0, _generated.isTSTypeReference)(node) && node.typeParameters) {
+      const name = getQualifiedName(node.typeName);
+
+      if (generics.has(name)) {
+        let existing = generics.get(name);
+
+        if (existing.typeParameters) {
+          if (node.typeParameters) {
+            existing.typeParameters.params = removeTypeDuplicates(existing.typeParameters.params.concat(node.typeParameters.params));
+          }
+        } else {
+          existing = node.typeParameters;
+        }
+      } else {
+        generics.set(name, node);
+      }
+
+      continue;
+    }
+
     types.push(node);
   }
 
-  for (const type of Object.keys(bases)) {
-    types.push(bases[type]);
+  for (const [, baseType] of bases) {
+    types.push(baseType);
   }
 
-  for (const name of Object.keys(generics)) {
-    types.push(generics[name]);
+  for (const [, genericName] of generics) {
+    types.push(genericName);
   }
 
   return types;

node_modules/@babel/types/package.json

 {
   "name": "@babel/types",
-  "version": "7.18.7",
+  "version": "7.18.8",
   "description": "Babel Types is a Lodash-esque utility library for AST nodes",
   "author": "The Babel Team (https://babel.dev/team)",
   "homepage": "https://babel.dev/docs/en/next/babel-types",
@@ -29,7 +29,7 @@
   },
   "devDependencies": {
     "@babel/generator": "^7.18.7",
-    "@babel/parser": "^7.18.6",
+    "@babel/parser": "^7.18.8",
     "chalk": "^4.1.0",
     "glob": "^7.1.7"
   },

node_modules/@eslint/eslintrc/CHANGELOG.md

+v0.4.3 - July 17, 2021
+
+* [`ce78027`](https://github.com/eslint/eslintrc/commit/ce78027f6a319a29fdf0b78ac1e7071373acffc4) Fix: ensure config files are files (#42) (Tom Jenkinson)
+* [`95b1c9b`](https://github.com/eslint/eslintrc/commit/95b1c9b30267479a75cd07768f8f9e9cfa63c105) Chore: pin fs-teardown@0.1.1 (#45) (Milos Djermanovic)
+* [`593fbe3`](https://github.com/eslint/eslintrc/commit/593fbe3c2c1c5f723f71810963ed21a56caed4c1) Chore: fix failing test (#44) (Tom Jenkinson)
+
+v0.4.2 - June 4, 2021
+
+* [`cc79a4d`](https://github.com/eslint/eslintrc/commit/cc79a4db45a2ca0236a846ed8eba28eea07d4db5) Upgrade: update globals to version 13.6 (#32) (Rouven Weßling)
+
+v0.4.1 - May 7, 2021
+
+* [`aa38ef4`](https://github.com/eslint/eslintrc/commit/aa38ef40c3123f8f534c7f9b0b7c306f5f011dce) Fix: Properly export module resolver (#34) (Richie Bendall)
+* [`62ea4bd`](https://github.com/eslint/eslintrc/commit/62ea4bd74b78fbeff12ffb21f1f978817601d4d1) Build: add node v16 (#33) (薛定谔的猫)
+* [`7c43d77`](https://github.com/eslint/eslintrc/commit/7c43d7784e39cf0b7b102af64f703cade11252bb) Chore: add tests for built-in rules config schema validation (fixes #15) (#31) (Milos Djermanovic)
+* [`d8ea601`](https://github.com/eslint/eslintrc/commit/d8ea601ecb4b9f81cdc332b012b6b1bbc984366c) Chore: Test on Node 15.x (#30) (Milos Djermanovic)
+* [`0b2f80d`](https://github.com/eslint/eslintrc/commit/0b2f80d6f6b33e4c5e168b08468867653f726754) Chore: lint test files (#18) (Milos Djermanovic)
+
+v0.4.0 - February 27, 2021
+
+* [`d9a527b`](https://github.com/eslint/eslintrc/commit/d9a527bdb16af46a28d37fa9022131149970a438) New: Implement DotCompat class (#20) (Nicholas C. Zakas)
+* [`dac76c0`](https://github.com/eslint/eslintrc/commit/dac76c035a9ab9d315050f688867373966aab288) Chore: Replace usage of lodash with cache set (#29) (Tim van der Lippe)
+* [`3ae2d77`](https://github.com/eslint/eslintrc/commit/3ae2d770cb810c026de817e6861e25dac111da9f) Update: add AggregateError global to es2021 environment (#28) (Milos Djermanovic)
+
+v0.3.0 - January 15, 2021
+
+* [`5184490`](https://github.com/eslint/eslintrc/commit/51844902bc4132f264f05a0614f2cdeb89290f68) Upgrade: lodash@4.17.20 (#24) (Milos Djermanovic)
+* [`f1179c5`](https://github.com/eslint/eslintrc/commit/f1179c587ae09fabb5c3402598363cfcec2494f7) Update: Implement missing functionality from ESLint port (fixes #12) (#23) (Nicholas C. Zakas)
+
+v0.2.2 - December 5, 2020
+
+* [`1746840`](https://github.com/eslint/eslintrc/commit/17468407c1baf05747cb261c91f7f7b7c2a82422) Fix: include loadRules in internalSlotsMap cache (#19) (Henry Q. Dineen)
+* [`f30bb49`](https://github.com/eslint/eslintrc/commit/f30bb4935aaf3f4c1b268490da495a59647e58d8) Chore: Test fixes for CascadingConfigArrayFactory (#17) (Nicholas C. Zakas)
+* [`4440df8`](https://github.com/eslint/eslintrc/commit/4440df8237a127e15cbde5c697353e1224f12ec1) Chore: Fix config-array tests (#16) (Nicholas C. Zakas)
+* [`7890e02`](https://github.com/eslint/eslintrc/commit/7890e027df530a0fb53bcf5751c8c7a008b2a494) Chore: Test fixes for config-array-factory.js (#13) (Nicholas C. Zakas)
+
+v0.2.1 - October 26, 2020
+
+* [`8b202ff`](https://github.com/eslint/eslintrc/commit/8b202ff866a39efdaad6394fde9f88372afbfca8) Fix: validate schema for built-in rules (#14) (Milos Djermanovic)
+* [`04f3cae`](https://github.com/eslint/eslintrc/commit/04f3cae17fe07b2fd0b74fd3e88482b3094e75e3) Fix: cache compiled config schema (#9) (Milos Djermanovic)
+
+v0.2.0 - October 16, 2020
+
+* [`cb12255`](https://github.com/eslint/eslintrc/commit/cb12255b85390e932e1942e479c2c97310149390) Update: Allow eslint:all and eslint:recommended paths to be passed in (#11) (Nicholas C. Zakas)
+* [`a75bacd`](https://github.com/eslint/eslintrc/commit/a75bacd9a743a7bbcdb8c59e5d4f9de3dc8b0f20) Chore: use GitHub Actions (#10) (Milos Djermanovic)
+
+v0.1.3 - September 1, 2020
+
+* [`8647a61`](https://github.com/eslint/eslintrc/commit/8647a61991fe121f923d33e96232475209b78210) Fix: version number and eslint-release version (refs #6) (Nicholas C. Zakas)
+

node_modules/@eslint/eslintrc/LICENSE

+MIT License
+
+Copyright (c) 2020 ESLint
+
+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.

node_modules/@eslint/eslintrc/README.md

+# ESLintRC Library
+
+This repository contains the legacy ESLintRC configuration file format for ESLint.
+
+**Note:** This package is not intended for use outside of the ESLint ecosystem. It is ESLint-specific and not intended for use in other programs.
+
+## Installation
+
+You can install the package as follows:
+
+```
+npm install @eslint/eslintrc --save-dev
+
+# or
+
+yarn add @eslint/eslintrc -D
+```
+
+## Future Usage
+
+**Note:** This package is not intended for public use at this time. The following is an example of how it will be used in the future.
+
+The primary class in this package is `FlatCompat`, which is a utility to translate ESLintRC-style configs into flat configs. Here's how you use it inside of your `eslint.config.js` file:
+
+```js
+import { FlatCompat } from "@eslint/eslintrc";
+
+const compat = new FlatCompat();
+
+export default [
+
+    // mimic ESLintRC-style extends
+    compat.extends("standard", "example"),
+
+    // mimic environments
+    compat.env({
+        es2020: true,
+        node: true
+    }),
+
+    // mimic plugins
+    compat.plugins("airbnb", "react"),
+
+    // translate an entire config
+    compat.config({
+        plugins: ["airbnb", "react"],
+        extends: "standard",
+        env: {
+            es2020: true,
+            node: true
+        },
+        rules: {
+            semi: "error"
+        }
+    })
+];
+```
+
+## License
+
+MIT License

node_modules/@eslint/eslintrc/conf/config-schema.js

+/**
+ * @fileoverview Defines a schema for configs.
+ * @author Sylvan Mably
+ */
+
+"use strict";
+
+const baseConfigProperties = {
+    $schema: { type: "string" },
+    env: { type: "object" },
+    extends: { $ref: "#/definitions/stringOrStrings" },
+    globals: { type: "object" },
+    overrides: {
+        type: "array",
+        items: { $ref: "#/definitions/overrideConfig" },
+        additionalItems: false
+    },
+    parser: { type: ["string", "null"] },
+    parserOptions: { type: "object" },
+    plugins: { type: "array" },
+    processor: { type: "string" },
+    rules: { type: "object" },
+    settings: { type: "object" },
+    noInlineConfig: { type: "boolean" },
+    reportUnusedDisableDirectives: { type: "boolean" },
+
+    ecmaFeatures: { type: "object" } // deprecated; logs a warning when used
+};
+
+const configSchema = {
+    definitions: {
+        stringOrStrings: {
+            oneOf: [
+                { type: "string" },
+                {
+                    type: "array",
+                    items: { type: "string" },
+                    additionalItems: false
+                }
+            ]
+        },
+        stringOrStringsRequired: {
+            oneOf: [
+                { type: "string" },
+                {
+                    type: "array",
+                    items: { type: "string" },
+                    additionalItems: false,
+                    minItems: 1
+                }
+            ]
+        },
+
+        // Config at top-level.
+        objectConfig: {
+            type: "object",
+            properties: {
+                root: { type: "boolean" },
+                ignorePatterns: { $ref: "#/definitions/stringOrStrings" },
+                ...baseConfigProperties
+            },
+            additionalProperties: false
+        },
+
+        // Config in `overrides`.
+        overrideConfig: {
+            type: "object",
+            properties: {
+                excludedFiles: { $ref: "#/definitions/stringOrStrings" },
+                files: { $ref: "#/definitions/stringOrStringsRequired" },
+                ...baseConfigProperties
+            },
+            required: ["files"],
+            additionalProperties: false
+        }
+    },
+
+    $ref: "#/definitions/objectConfig"
+};
+
+module.exports = configSchema;

node_modules/@eslint/eslintrc/conf/environments.js

+/**
+ * @fileoverview Defines environment settings and globals.
+ * @author Elan Shanker
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const globals = require("globals");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Get the object that has difference.
+ * @param {Record<string,boolean>} current The newer object.
+ * @param {Record<string,boolean>} prev The older object.
+ * @returns {Record<string,boolean>} The difference object.
+ */
+function getDiff(current, prev) {
+    const retv = {};
+
+    for (const [key, value] of Object.entries(current)) {
+        if (!Object.hasOwnProperty.call(prev, key)) {
+            retv[key] = value;
+        }
+    }
+
+    return retv;
+}
+
+const newGlobals2015 = getDiff(globals.es2015, globals.es5); // 19 variables such as Promise, Map, ...
+const newGlobals2017 = {
+    Atomics: false,
+    SharedArrayBuffer: false
+};
+const newGlobals2020 = {
+    BigInt: false,
+    BigInt64Array: false,
+    BigUint64Array: false,
+    globalThis: false
+};
+
+const newGlobals2021 = {
+    AggregateError: false,
+    FinalizationRegistry: false,
+    WeakRef: false
+};
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/** @type {Map<string, import("../lib/shared/types").Environment>} */
+module.exports = new Map(Object.entries({
+
+    // Language
+    builtin: {
+        globals: globals.es5
+    },
+    es6: {
+        globals: newGlobals2015,
+        parserOptions: {
+            ecmaVersion: 6
+        }
+    },
+    es2015: {
+        globals: newGlobals2015,
+        parserOptions: {
+            ecmaVersion: 6
+        }
+    },
+    es2017: {
+        globals: { ...newGlobals2015, ...newGlobals2017 },
+        parserOptions: {
+            ecmaVersion: 8
+        }
+    },
+    es2020: {
+        globals: { ...newGlobals2015, ...newGlobals2017, ...newGlobals2020 },
+        parserOptions: {
+            ecmaVersion: 11
+        }
+    },
+    es2021: {
+        globals: { ...newGlobals2015, ...newGlobals2017, ...newGlobals2020, ...newGlobals2021 },
+        parserOptions: {
+            ecmaVersion: 12
+        }
+    },
+
+    // Platforms
+    browser: {
+        globals: globals.browser
+    },
+    node: {
+        globals: globals.node,
+        parserOptions: {
+            ecmaFeatures: {
+                globalReturn: true
+            }
+        }
+    },
+    "shared-node-browser": {
+        globals: globals["shared-node-browser"]
+    },
+    worker: {
+        globals: globals.worker
+    },
+    serviceworker: {
+        globals: globals.serviceworker
+    },
+
+    // Frameworks
+    commonjs: {
+        globals: globals.commonjs,
+        parserOptions: {
+            ecmaFeatures: {
+                globalReturn: true
+            }
+        }
+    },
+    amd: {
+        globals: globals.amd
+    },
+    mocha: {
+        globals: globals.mocha
+    },
+    jasmine: {
+        globals: globals.jasmine
+    },
+    jest: {
+        globals: globals.jest
+    },
+    phantomjs: {
+        globals: globals.phantomjs
+    },
+    jquery: {
+        globals: globals.jquery
+    },
+    qunit: {
+        globals: globals.qunit
+    },
+    prototypejs: {
+        globals: globals.prototypejs
+    },
+    shelljs: {
+        globals: globals.shelljs
+    },
+    meteor: {
+        globals: globals.meteor
+    },
+    mongo: {
+        globals: globals.mongo
+    },
+    protractor: {
+        globals: globals.protractor
+    },
+    applescript: {
+        globals: globals.applescript
+    },
+    nashorn: {
+        globals: globals.nashorn
+    },
+    atomtest: {
+        globals: globals.atomtest
+    },
+    embertest: {
+        globals: globals.embertest
+    },
+    webextensions: {
+        globals: globals.webextensions
+    },
+    greasemonkey: {
+        globals: globals.greasemonkey
+    }
+}));

node_modules/@eslint/eslintrc/conf/eslint-all.js

+/**
+ * @fileoverview Stub eslint:all config
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+module.exports = {
+    settings: {
+        "eslint:all": true
+    }
+};

node_modules/@eslint/eslintrc/conf/eslint-recommended.js

+/**
+ * @fileoverview Stub eslint:recommended config
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+module.exports = {
+    settings: {
+        "eslint:recommended": true
+    }
+};

node_modules/@eslint/eslintrc/lib/cascading-config-array-factory.js

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

node_modules/@eslint/eslintrc/lib/config-array-factory.js

+/**
+ * @fileoverview The factory of `ConfigArray` objects.
+ *
+ * This class provides methods to create `ConfigArray` instance.
+ *
+ * - `create(configData, options)`
+ *     Create a `ConfigArray` instance from a config data. This is to handle CLI
+ *     options except `--config`.
+ * - `loadFile(filePath, options)`
+ *     Create a `ConfigArray` instance from a config file. This is to handle
+ *     `--config` option. If the file was not found, throws the following error:
+ *      - If the filename was `*.js`, a `MODULE_NOT_FOUND` error.
+ *      - If the filename was `package.json`, an IO error or an
+ *        `ESLINT_CONFIG_FIELD_NOT_FOUND` error.
+ *      - Otherwise, an IO error such as `ENOENT`.
+ * - `loadInDirectory(directoryPath, options)`
+ *     Create a `ConfigArray` instance from a config file which is on a given
+ *     directory. This tries to load `.eslintrc.*` or `package.json`. If not
+ *     found, returns an empty `ConfigArray`.
+ * - `loadESLintIgnore(filePath)`
+ *     Create a `ConfigArray` instance from a config file that is `.eslintignore`
+ *     format. This is to handle `--ignore-path` option.
+ * - `loadDefaultESLintIgnore()`
+ *     Create a `ConfigArray` instance from `.eslintignore` or `package.json` in
+ *     the current working directory.
+ *
+ * `ConfigArrayFactory` class has the responsibility that loads configuration
+ * files, including loading `extends`, `parser`, and `plugins`. The created
+ * `ConfigArray` instance has the loaded `extends`, `parser`, and `plugins`.
+ *
+ * But this class doesn't handle cascading. `CascadingConfigArrayFactory` class
+ * handles cascading and hierarchy.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs");
+const path = require("path");
+const importFresh = require("import-fresh");
+const stripComments = require("strip-json-comments");
+const ConfigValidator = require("./shared/config-validator");
+const naming = require("./shared/naming");
+const ModuleResolver = require("./shared/relative-module-resolver");
+const {
+    ConfigArray,
+    ConfigDependency,
+    IgnorePattern,
+    OverrideTester
+} = require("./config-array");
+const debug = require("debug")("eslintrc:config-array-factory");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const configFilenames = [
+    ".eslintrc.js",
+    ".eslintrc.cjs",
+    ".eslintrc.yaml",
+    ".eslintrc.yml",
+    ".eslintrc.json",
+    ".eslintrc",
+    "package.json"
+];
+
+// Define types for VSCode IntelliSense.
+/** @typedef {import("./shared/types").ConfigData} ConfigData */
+/** @typedef {import("./shared/types").OverrideConfigData} OverrideConfigData */
+/** @typedef {import("./shared/types").Parser} Parser */
+/** @typedef {import("./shared/types").Plugin} Plugin */
+/** @typedef {import("./shared/types").Rule} Rule */
+/** @typedef {import("./config-array/config-dependency").DependentParser} DependentParser */
+/** @typedef {import("./config-array/config-dependency").DependentPlugin} DependentPlugin */
+/** @typedef {ConfigArray[0]} ConfigArrayElement */
+
+/**
+ * @typedef {Object} ConfigArrayFactoryOptions
+ * @property {Map<string,Plugin>} [additionalPluginPool] The map for additional plugins.
+ * @property {string} [cwd] The path to the current working directory.
+ * @property {string} [resolvePluginsRelativeTo] A path to the directory that plugins should be resolved from. Defaults to `cwd`.
+ * @property {Map<string,Rule>} builtInRules The rules that are built in to ESLint.
+ * @property {Object} [resolver=ModuleResolver] The module resolver object.
+ * @property {string} eslintAllPath The path to the definitions for eslint:all.
+ * @property {string} eslintRecommendedPath The path to the definitions for eslint:recommended.
+ */
+
+/**
+ * @typedef {Object} ConfigArrayFactoryInternalSlots
+ * @property {Map<string,Plugin>} additionalPluginPool The map for additional plugins.
+ * @property {string} cwd The path to the current working directory.
+ * @property {string | undefined} resolvePluginsRelativeTo An absolute path the the directory that plugins should be resolved from.
+ * @property {Map<string,Rule>} builtInRules The rules that are built in to ESLint.
+ * @property {Object} [resolver=ModuleResolver] The module resolver object.
+ * @property {string} eslintAllPath The path to the definitions for eslint:all.
+ * @property {string} eslintRecommendedPath The path to the definitions for eslint:recommended.
+ */
+
+/**
+ * @typedef {Object} ConfigArrayFactoryLoadingContext
+ * @property {string} filePath The path to the current configuration.
+ * @property {string} matchBasePath The base path to resolve relative paths in `overrides[].files`, `overrides[].excludedFiles`, and `ignorePatterns`.
+ * @property {string} name The name of the current configuration.
+ * @property {string} pluginBasePath The base path to resolve plugins.
+ * @property {"config" | "ignore" | "implicit-processor"} type The type of the current configuration. This is `"config"` in normal. This is `"ignore"` if it came from `.eslintignore`. This is `"implicit-processor"` if it came from legacy file-extension processors.
+ */
+
+/**
+ * @typedef {Object} ConfigArrayFactoryLoadingContext
+ * @property {string} filePath The path to the current configuration.
+ * @property {string} matchBasePath The base path to resolve relative paths in `overrides[].files`, `overrides[].excludedFiles`, and `ignorePatterns`.
+ * @property {string} name The name of the current configuration.
+ * @property {"config" | "ignore" | "implicit-processor"} type The type of the current configuration. This is `"config"` in normal. This is `"ignore"` if it came from `.eslintignore`. This is `"implicit-processor"` if it came from legacy file-extension processors.
+ */
+
+/** @type {WeakMap<ConfigArrayFactory, ConfigArrayFactoryInternalSlots>} */
+const internalSlotsMap = new WeakMap();
+
+/**
+ * Check if a given string is a file path.
+ * @param {string} nameOrPath A module name or file path.
+ * @returns {boolean} `true` if the `nameOrPath` is a file path.
+ */
+function isFilePath(nameOrPath) {
+    return (
+        /^\.{1,2}[/\\]/u.test(nameOrPath) ||
+        path.isAbsolute(nameOrPath)
+    );
+}
+
+/**
+ * Convenience wrapper for synchronously reading file contents.
+ * @param {string} filePath The filename to read.
+ * @returns {string} The file contents, with the BOM removed.
+ * @private
+ */
+function readFile(filePath) {
+    return fs.readFileSync(filePath, "utf8").replace(/^\ufeff/u, "");
+}
+
+/**
+ * Loads a YAML configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {ConfigData} 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 {ConfigData} 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}`;
+        e.messageTemplate = "failed-to-read-json";
+        e.messageData = {
+            path: filePath,
+            message: e.message
+        };
+        throw e;
+    }
+}
+
+/**
+ * Loads a legacy (.eslintrc) configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {ConfigData} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadLegacyConfigFile(filePath) {
+    debug(`Loading legacy 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: %s\n%o", filePath, e);
+        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 {ConfigData} 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 importFresh(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 {ConfigData} 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 {
+        const packageData = loadJSONConfigFile(filePath);
+
+        if (!Object.hasOwnProperty.call(packageData, "eslintConfig")) {
+            throw Object.assign(
+                new Error("package.json file doesn't have 'eslintConfig' field."),
+                { code: "ESLINT_CONFIG_FIELD_NOT_FOUND" }
+            );
+        }
+
+        return packageData.eslintConfig;
+    } catch (e) {
+        debug(`Error reading package.json file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Loads a `.eslintignore` from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {string[]} The ignore patterns from the file.
+ * @private
+ */
+function loadESLintIgnoreFile(filePath) {
+    debug(`Loading .eslintignore file: ${filePath}`);
+
+    try {
+        return readFile(filePath)
+            .split(/\r?\n/gu)
+            .filter(line => line.trim() !== "" && !line.startsWith("#"));
+    } catch (e) {
+        debug(`Error reading .eslintignore file: ${filePath}`);
+        e.message = `Cannot read .eslintignore file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Creates an error to notify about a missing config to extend from.
+ * @param {string} configName The name of the missing config.
+ * @param {string} importerName The name of the config that imported the missing config
+ * @param {string} messageTemplate The text template to source error strings from.
+ * @returns {Error} The error object to throw
+ * @private
+ */
+function configInvalidError(configName, importerName, messageTemplate) {
+    return Object.assign(
+        new Error(`Failed to load config "${configName}" to extend from.`),
+        {
+            messageTemplate,
+            messageData: { configName, importerName }
+        }
+    );
+}
+
+/**
+ * Loads a configuration file regardless of the source. Inspects the file path
+ * to determine the correctly way to load the config file.
+ * @param {string} filePath The path to the configuration.
+ * @returns {ConfigData|null} The configuration information.
+ * @private
+ */
+function loadConfigFile(filePath) {
+    switch (path.extname(filePath)) {
+        case ".js":
+        case ".cjs":
+            return loadJSConfigFile(filePath);
+
+        case ".json":
+            if (path.basename(filePath) === "package.json") {
+                return loadPackageJSONConfigFile(filePath);
+            }
+            return loadJSONConfigFile(filePath);
+
+        case ".yaml":
+        case ".yml":
+            return loadYAMLConfigFile(filePath);
+
+        default:
+            return loadLegacyConfigFile(filePath);
+    }
+}
+
+/**
+ * Write debug log.
+ * @param {string} request The requested module name.
+ * @param {string} relativeTo The file path to resolve the request relative to.
+ * @param {string} filePath The resolved file path.
+ * @returns {void}
+ */
+function writeDebugLogForLoading(request, relativeTo, filePath) {
+    /* istanbul ignore next */
+    if (debug.enabled) {
+        let nameAndVersion = null;
+
+        try {
+            const packageJsonPath = ModuleResolver.resolve(
+                `${request}/package.json`,
+                relativeTo
+            );
+            const { version = "unknown" } = require(packageJsonPath);
+
+            nameAndVersion = `${request}@${version}`;
+        } catch (error) {
+            debug("package.json was not found:", error.message);
+            nameAndVersion = request;
+        }
+
+        debug("Loaded: %s (%s)", nameAndVersion, filePath);
+    }
+}
+
+/**
+ * Create a new context with default values.
+ * @param {ConfigArrayFactoryInternalSlots} slots The internal slots.
+ * @param {"config" | "ignore" | "implicit-processor" | undefined} providedType The type of the current configuration. Default is `"config"`.
+ * @param {string | undefined} providedName The name of the current configuration. Default is the relative path from `cwd` to `filePath`.
+ * @param {string | undefined} providedFilePath The path to the current configuration. Default is empty string.
+ * @param {string | undefined} providedMatchBasePath The type of the current configuration. Default is the directory of `filePath` or `cwd`.
+ * @returns {ConfigArrayFactoryLoadingContext} The created context.
+ */
+function createContext(
+    { cwd, resolvePluginsRelativeTo },
+    providedType,
+    providedName,
+    providedFilePath,
+    providedMatchBasePath
+) {
+    const filePath = providedFilePath
+        ? path.resolve(cwd, providedFilePath)
+        : "";
+    const matchBasePath =
+        (providedMatchBasePath && path.resolve(cwd, providedMatchBasePath)) ||
+        (filePath && path.dirname(filePath)) ||
+        cwd;
+    const name =
+        providedName ||
+        (filePath && path.relative(cwd, filePath)) ||
+        "";
+    const pluginBasePath =
+        resolvePluginsRelativeTo ||
+        (filePath && path.dirname(filePath)) ||
+        cwd;
+    const type = providedType || "config";
+
+    return { filePath, matchBasePath, name, pluginBasePath, type };
+}
+
+/**
+ * Normalize a given plugin.
+ * - Ensure the object to have four properties: configs, environments, processors, and rules.
+ * - Ensure the object to not have other properties.
+ * @param {Plugin} plugin The plugin to normalize.
+ * @returns {Plugin} The normalized plugin.
+ */
+function normalizePlugin(plugin) {
+    return {
+        configs: plugin.configs || {},
+        environments: plugin.environments || {},
+        processors: plugin.processors || {},
+        rules: plugin.rules || {}
+    };
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * The factory of `ConfigArray` objects.
+ */
+class ConfigArrayFactory {
+
+    /**
+     * Initialize this instance.
+     * @param {ConfigArrayFactoryOptions} [options] The map for additional plugins.
+     */
+    constructor({
+        additionalPluginPool = new Map(),
+        cwd = process.cwd(),
+        resolvePluginsRelativeTo,
+        builtInRules,
+        resolver = ModuleResolver,
+        eslintAllPath,
+        eslintRecommendedPath
+    } = {}) {
+        internalSlotsMap.set(this, {
+            additionalPluginPool,
+            cwd,
+            resolvePluginsRelativeTo:
+                resolvePluginsRelativeTo &&
+                path.resolve(cwd, resolvePluginsRelativeTo),
+            builtInRules,
+            resolver,
+            eslintAllPath,
+            eslintRecommendedPath
+        });
+    }
+
+    /**
+     * Create `ConfigArray` instance from a config data.
+     * @param {ConfigData|null} configData The config data to create.
+     * @param {Object} [options] The options.
+     * @param {string} [options.basePath] The base path to resolve relative paths in `overrides[].files`, `overrides[].excludedFiles`, and `ignorePatterns`.
+     * @param {string} [options.filePath] The path to this config data.
+     * @param {string} [options.name] The config name.
+     * @returns {ConfigArray} Loaded config.
+     */
+    create(configData, { basePath, filePath, name } = {}) {
+        if (!configData) {
+            return new ConfigArray();
+        }
+
+        const slots = internalSlotsMap.get(this);
+        const ctx = createContext(slots, "config", name, filePath, basePath);
+        const elements = this._normalizeConfigData(configData, ctx);
+
+        return new ConfigArray(...elements);
+    }
+
+    /**
+     * Load a config file.
+     * @param {string} filePath The path to a config file.
+     * @param {Object} [options] The options.
+     * @param {string} [options.basePath] The base path to resolve relative paths in `overrides[].files`, `overrides[].excludedFiles`, and `ignorePatterns`.
+     * @param {string} [options.name] The config name.
+     * @returns {ConfigArray} Loaded config.
+     */
+    loadFile(filePath, { basePath, name } = {}) {
+        const slots = internalSlotsMap.get(this);
+        const ctx = createContext(slots, "config", name, filePath, basePath);
+
+        return new ConfigArray(...this._loadConfigData(ctx));
+    }
+
+    /**
+     * Load the config file on a given directory if exists.
+     * @param {string} directoryPath The path to a directory.
+     * @param {Object} [options] The options.
+     * @param {string} [options.basePath] The base path to resolve relative paths in `overrides[].files`, `overrides[].excludedFiles`, and `ignorePatterns`.
+     * @param {string} [options.name] The config name.
+     * @returns {ConfigArray} Loaded config. An empty `ConfigArray` if any config doesn't exist.
+     */
+    loadInDirectory(directoryPath, { basePath, name } = {}) {
+        const slots = internalSlotsMap.get(this);
+
+        for (const filename of configFilenames) {
+            const ctx = createContext(
+                slots,
+                "config",
+                name,
+                path.join(directoryPath, filename),
+                basePath
+            );
+
+            if (fs.existsSync(ctx.filePath) && fs.statSync(ctx.filePath).isFile()) {
+                let configData;
+
+                try {
+                    configData = loadConfigFile(ctx.filePath);
+                } catch (error) {
+                    if (!error || error.code !== "ESLINT_CONFIG_FIELD_NOT_FOUND") {
+                        throw error;
+                    }
+                }
+
+                if (configData) {
+                    debug(`Config file found: ${ctx.filePath}`);
+                    return new ConfigArray(
+                        ...this._normalizeConfigData(configData, ctx)
+                    );
+                }
+            }
+        }
+
+        debug(`Config file not found on ${directoryPath}`);
+        return new ConfigArray();
+    }
+
+    /**
+     * Check if a config file on a given directory exists or not.
+     * @param {string} directoryPath The path to a directory.
+     * @returns {string | null} The path to the found config file. If not found then null.
+     */
+    static getPathToConfigFileInDirectory(directoryPath) {
+        for (const filename of configFilenames) {
+            const filePath = path.join(directoryPath, filename);
+
+            if (fs.existsSync(filePath)) {
+                if (filename === "package.json") {
+                    try {
+                        loadPackageJSONConfigFile(filePath);
+                        return filePath;
+                    } catch { /* ignore */ }
+                } else {
+                    return filePath;
+                }
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Load `.eslintignore` file.
+     * @param {string} filePath The path to a `.eslintignore` file to load.
+     * @returns {ConfigArray} Loaded config. An empty `ConfigArray` if any config doesn't exist.
+     */
+    loadESLintIgnore(filePath) {
+        const slots = internalSlotsMap.get(this);
+        const ctx = createContext(
+            slots,
+            "ignore",
+            void 0,
+            filePath,
+            slots.cwd
+        );
+        const ignorePatterns = loadESLintIgnoreFile(ctx.filePath);
+
+        return new ConfigArray(
+            ...this._normalizeESLintIgnoreData(ignorePatterns, ctx)
+        );
+    }
+
+    /**
+     * Load `.eslintignore` file in the current working directory.
+     * @returns {ConfigArray} Loaded config. An empty `ConfigArray` if any config doesn't exist.
+     */
+    loadDefaultESLintIgnore() {
+        const slots = internalSlotsMap.get(this);
+        const eslintIgnorePath = path.resolve(slots.cwd, ".eslintignore");
+        const packageJsonPath = path.resolve(slots.cwd, "package.json");
+
+        if (fs.existsSync(eslintIgnorePath)) {
+            return this.loadESLintIgnore(eslintIgnorePath);
+        }
+        if (fs.existsSync(packageJsonPath)) {
+            const data = loadJSONConfigFile(packageJsonPath);
+
+            if (Object.hasOwnProperty.call(data, "eslintIgnore")) {
+                if (!Array.isArray(data.eslintIgnore)) {
+                    throw new Error("Package.json eslintIgnore property requires an array of paths");
+                }
+                const ctx = createContext(
+                    slots,
+                    "ignore",
+                    "eslintIgnore in package.json",
+                    packageJsonPath,
+                    slots.cwd
+                );
+
+                return new ConfigArray(
+                    ...this._normalizeESLintIgnoreData(data.eslintIgnore, ctx)
+                );
+            }
+        }
+
+        return new ConfigArray();
+    }
+
+    /**
+     * Load a given config file.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} Loaded config.
+     * @private
+     */
+    _loadConfigData(ctx) {
+        return this._normalizeConfigData(loadConfigFile(ctx.filePath), ctx);
+    }
+
+    /**
+     * Normalize a given `.eslintignore` data to config array elements.
+     * @param {string[]} ignorePatterns The patterns to ignore files.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    *_normalizeESLintIgnoreData(ignorePatterns, ctx) {
+        const elements = this._normalizeObjectConfigData(
+            { ignorePatterns },
+            ctx
+        );
+
+        // Set `ignorePattern.loose` flag for backward compatibility.
+        for (const element of elements) {
+            if (element.ignorePattern) {
+                element.ignorePattern.loose = true;
+            }
+            yield element;
+        }
+    }
+
+    /**
+     * Normalize a given config to an array.
+     * @param {ConfigData} configData The config data to normalize.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    _normalizeConfigData(configData, ctx) {
+        const validator = new ConfigValidator();
+
+        validator.validateConfigSchema(configData, ctx.name || ctx.filePath);
+        return this._normalizeObjectConfigData(configData, ctx);
+    }
+
+    /**
+     * Normalize a given config to an array.
+     * @param {ConfigData|OverrideConfigData} configData The config data to normalize.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    *_normalizeObjectConfigData(configData, ctx) {
+        const { files, excludedFiles, ...configBody } = configData;
+        const criteria = OverrideTester.create(
+            files,
+            excludedFiles,
+            ctx.matchBasePath
+        );
+        const elements = this._normalizeObjectConfigDataBody(configBody, ctx);
+
+        // Apply the criteria to every element.
+        for (const element of elements) {
+
+            /*
+             * Merge the criteria.
+             * This is for the `overrides` entries that came from the
+             * configurations of `overrides[].extends`.
+             */
+            element.criteria = OverrideTester.and(criteria, element.criteria);
+
+            /*
+             * Remove `root` property to ignore `root` settings which came from
+             * `extends` in `overrides`.
+             */
+            if (element.criteria) {
+                element.root = void 0;
+            }
+
+            yield element;
+        }
+    }
+
+    /**
+     * Normalize a given config to an array.
+     * @param {ConfigData} configData The config data to normalize.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    *_normalizeObjectConfigDataBody(
+        {
+            env,
+            extends: extend,
+            globals,
+            ignorePatterns,
+            noInlineConfig,
+            parser: parserName,
+            parserOptions,
+            plugins: pluginList,
+            processor,
+            reportUnusedDisableDirectives,
+            root,
+            rules,
+            settings,
+            overrides: overrideList = []
+        },
+        ctx
+    ) {
+        const extendList = Array.isArray(extend) ? extend : [extend];
+        const ignorePattern = ignorePatterns && new IgnorePattern(
+            Array.isArray(ignorePatterns) ? ignorePatterns : [ignorePatterns],
+            ctx.matchBasePath
+        );
+
+        // Flatten `extends`.
+        for (const extendName of extendList.filter(Boolean)) {
+            yield* this._loadExtends(extendName, ctx);
+        }
+
+        // Load parser & plugins.
+        const parser = parserName && this._loadParser(parserName, ctx);
+        const plugins = pluginList && this._loadPlugins(pluginList, ctx);
+
+        // Yield pseudo config data for file extension processors.
+        if (plugins) {
+            yield* this._takeFileExtensionProcessors(plugins, ctx);
+        }
+
+        // Yield the config data except `extends` and `overrides`.
+        yield {
+
+            // Debug information.
+            type: ctx.type,
+            name: ctx.name,
+            filePath: ctx.filePath,
+
+            // Config data.
+            criteria: null,
+            env,
+            globals,
+            ignorePattern,
+            noInlineConfig,
+            parser,
+            parserOptions,
+            plugins,
+            processor,
+            reportUnusedDisableDirectives,
+            root,
+            rules,
+            settings
+        };
+
+        // Flatten `overries`.
+        for (let i = 0; i < overrideList.length; ++i) {
+            yield* this._normalizeObjectConfigData(
+                overrideList[i],
+                { ...ctx, name: `${ctx.name}#overrides[${i}]` }
+            );
+        }
+    }
+
+    /**
+     * Load configs of an element in `extends`.
+     * @param {string} extendName The name of a base config.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    _loadExtends(extendName, ctx) {
+        debug("Loading {extends:%j} relative to %s", extendName, ctx.filePath);
+        try {
+            if (extendName.startsWith("eslint:")) {
+                return this._loadExtendedBuiltInConfig(extendName, ctx);
+            }
+            if (extendName.startsWith("plugin:")) {
+                return this._loadExtendedPluginConfig(extendName, ctx);
+            }
+            return this._loadExtendedShareableConfig(extendName, ctx);
+        } catch (error) {
+            error.message += `\nReferenced from: ${ctx.filePath || ctx.name}`;
+            throw error;
+        }
+    }
+
+    /**
+     * Load configs of an element in `extends`.
+     * @param {string} extendName The name of a base config.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    _loadExtendedBuiltInConfig(extendName, ctx) {
+        const { eslintAllPath, eslintRecommendedPath } = internalSlotsMap.get(this);
+
+        if (extendName === "eslint:recommended") {
+            return this._loadConfigData({
+                ...ctx,
+                filePath: eslintRecommendedPath,
+                name: `${ctx.name} » ${extendName}`
+            });
+        }
+        if (extendName === "eslint:all") {
+            return this._loadConfigData({
+                ...ctx,
+                filePath: eslintAllPath,
+                name: `${ctx.name} » ${extendName}`
+            });
+        }
+
+        throw configInvalidError(extendName, ctx.name, "extend-config-missing");
+    }
+
+    /**
+     * Load configs of an element in `extends`.
+     * @param {string} extendName The name of a base config.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    _loadExtendedPluginConfig(extendName, ctx) {
+        const slashIndex = extendName.lastIndexOf("/");
+
+        if (slashIndex === -1) {
+            throw configInvalidError(extendName, ctx.filePath, "plugin-invalid");
+        }
+
+        const pluginName = extendName.slice("plugin:".length, slashIndex);
+        const configName = extendName.slice(slashIndex + 1);
+
+        if (isFilePath(pluginName)) {
+            throw new Error("'extends' cannot use a file path for plugins.");
+        }
+
+        const plugin = this._loadPlugin(pluginName, ctx);
+        const configData =
+            plugin.definition &&
+            plugin.definition.configs[configName];
+
+        if (configData) {
+            return this._normalizeConfigData(configData, {
+                ...ctx,
+                filePath: plugin.filePath || ctx.filePath,
+                name: `${ctx.name} » plugin:${plugin.id}/${configName}`
+            });
+        }
+
+        throw plugin.error || configInvalidError(extendName, ctx.filePath, "extend-config-missing");
+    }
+
+    /**
+     * Load configs of an element in `extends`.
+     * @param {string} extendName The name of a base config.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The normalized config.
+     * @private
+     */
+    _loadExtendedShareableConfig(extendName, ctx) {
+        const { cwd, resolver } = internalSlotsMap.get(this);
+        const relativeTo = ctx.filePath || path.join(cwd, "__placeholder__.js");
+        let request;
+
+        if (isFilePath(extendName)) {
+            request = extendName;
+        } else if (extendName.startsWith(".")) {
+            request = `./${extendName}`; // For backward compatibility. A ton of tests depended on this behavior.
+        } else {
+            request = naming.normalizePackageName(
+                extendName,
+                "eslint-config"
+            );
+        }
+
+        let filePath;
+
+        try {
+            filePath = resolver.resolve(request, relativeTo);
+        } catch (error) {
+            /* istanbul ignore else */
+            if (error && error.code === "MODULE_NOT_FOUND") {
+                throw configInvalidError(extendName, ctx.filePath, "extend-config-missing");
+            }
+            throw error;
+        }
+
+        writeDebugLogForLoading(request, relativeTo, filePath);
+        return this._loadConfigData({
+            ...ctx,
+            filePath,
+            name: `${ctx.name} » ${request}`
+        });
+    }
+
+    /**
+     * Load given plugins.
+     * @param {string[]} names The plugin names to load.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {Record<string,DependentPlugin>} The loaded parser.
+     * @private
+     */
+    _loadPlugins(names, ctx) {
+        return names.reduce((map, name) => {
+            if (isFilePath(name)) {
+                throw new Error("Plugins array cannot includes file paths.");
+            }
+            const plugin = this._loadPlugin(name, ctx);
+
+            map[plugin.id] = plugin;
+
+            return map;
+        }, {});
+    }
+
+    /**
+     * Load a given parser.
+     * @param {string} nameOrPath The package name or the path to a parser file.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {DependentParser} The loaded parser.
+     */
+    _loadParser(nameOrPath, ctx) {
+        debug("Loading parser %j from %s", nameOrPath, ctx.filePath);
+
+        const { cwd } = internalSlotsMap.get(this);
+        const relativeTo = ctx.filePath || path.join(cwd, "__placeholder__.js");
+
+        try {
+            const filePath = ModuleResolver.resolve(nameOrPath, relativeTo);
+
+            writeDebugLogForLoading(nameOrPath, relativeTo, filePath);
+
+            return new ConfigDependency({
+                definition: require(filePath),
+                filePath,
+                id: nameOrPath,
+                importerName: ctx.name,
+                importerPath: ctx.filePath
+            });
+        } catch (error) {
+
+            // If the parser name is "espree", load the espree of ESLint.
+            if (nameOrPath === "espree") {
+                debug("Fallback espree.");
+                return new ConfigDependency({
+                    definition: require("espree"),
+                    filePath: require.resolve("espree"),
+                    id: nameOrPath,
+                    importerName: ctx.name,
+                    importerPath: ctx.filePath
+                });
+            }
+
+            debug("Failed to load parser '%s' declared in '%s'.", nameOrPath, ctx.name);
+            error.message = `Failed to load parser '${nameOrPath}' declared in '${ctx.name}': ${error.message}`;
+
+            return new ConfigDependency({
+                error,
+                id: nameOrPath,
+                importerName: ctx.name,
+                importerPath: ctx.filePath
+            });
+        }
+    }
+
+    /**
+     * Load a given plugin.
+     * @param {string} name The plugin name to load.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {DependentPlugin} The loaded plugin.
+     * @private
+     */
+    _loadPlugin(name, ctx) {
+        debug("Loading plugin %j from %s", name, ctx.filePath);
+
+        const { additionalPluginPool } = internalSlotsMap.get(this);
+        const request = naming.normalizePackageName(name, "eslint-plugin");
+        const id = naming.getShorthandName(request, "eslint-plugin");
+        const relativeTo = path.join(ctx.pluginBasePath, "__placeholder__.js");
+
+        if (name.match(/\s+/u)) {
+            const error = Object.assign(
+                new Error(`Whitespace found in plugin name '${name}'`),
+                {
+                    messageTemplate: "whitespace-found",
+                    messageData: { pluginName: request }
+                }
+            );
+
+            return new ConfigDependency({
+                error,
+                id,
+                importerName: ctx.name,
+                importerPath: ctx.filePath
+            });
+        }
+
+        // Check for additional pool.
+        const plugin =
+            additionalPluginPool.get(request) ||
+            additionalPluginPool.get(id);
+
+        if (plugin) {
+            return new ConfigDependency({
+                definition: normalizePlugin(plugin),
+                filePath: "", // It's unknown where the plugin came from.
+                id,
+                importerName: ctx.name,
+                importerPath: ctx.filePath
+            });
+        }
+
+        let filePath;
+        let error;
+
+        try {
+            filePath = ModuleResolver.resolve(request, relativeTo);
+        } catch (resolveError) {
+            error = resolveError;
+            /* istanbul ignore else */
+            if (error && error.code === "MODULE_NOT_FOUND") {
+                error.messageTemplate = "plugin-missing";
+                error.messageData = {
+                    pluginName: request,
+                    resolvePluginsRelativeTo: ctx.pluginBasePath,
+                    importerName: ctx.name
+                };
+            }
+        }
+
+        if (filePath) {
+            try {
+                writeDebugLogForLoading(request, relativeTo, filePath);
+
+                const startTime = Date.now();
+                const pluginDefinition = require(filePath);
+
+                debug(`Plugin ${filePath} loaded in: ${Date.now() - startTime}ms`);
+
+                return new ConfigDependency({
+                    definition: normalizePlugin(pluginDefinition),
+                    filePath,
+                    id,
+                    importerName: ctx.name,
+                    importerPath: ctx.filePath
+                });
+            } catch (loadError) {
+                error = loadError;
+            }
+        }
+
+        debug("Failed to load plugin '%s' declared in '%s'.", name, ctx.name);
+        error.message = `Failed to load plugin '${name}' declared in '${ctx.name}': ${error.message}`;
+        return new ConfigDependency({
+            error,
+            id,
+            importerName: ctx.name,
+            importerPath: ctx.filePath
+        });
+    }
+
+    /**
+     * Take file expression processors as config array elements.
+     * @param {Record<string,DependentPlugin>} plugins The plugin definitions.
+     * @param {ConfigArrayFactoryLoadingContext} ctx The loading context.
+     * @returns {IterableIterator<ConfigArrayElement>} The config array elements of file expression processors.
+     * @private
+     */
+    *_takeFileExtensionProcessors(plugins, ctx) {
+        for (const pluginId of Object.keys(plugins)) {
+            const processors =
+                plugins[pluginId] &&
+                plugins[pluginId].definition &&
+                plugins[pluginId].definition.processors;
+
+            if (!processors) {
+                continue;
+            }
+
+            for (const processorId of Object.keys(processors)) {
+                if (processorId.startsWith(".")) {
+                    yield* this._normalizeObjectConfigData(
+                        {
+                            files: [`*${processorId}`],
+                            processor: `${pluginId}/${processorId}`
+                        },
+                        {
+                            ...ctx,
+                            type: "implicit-processor",
+                            name: `${ctx.name}#processors["${pluginId}/${processorId}"]`
+                        }
+                    );
+                }
+            }
+        }
+    }
+}
+
+module.exports = { ConfigArrayFactory, createContext };

node_modules/@eslint/eslintrc/lib/config-array/config-array.js

+/**
+ * @fileoverview `ConfigArray` class.
+ *
+ * `ConfigArray` class expresses the full of a configuration. It has the entry
+ * config file, base config files that were extended, loaded parsers, and loaded
+ * plugins.
+ *
+ * `ConfigArray` class provides three properties and two methods.
+ *
+ * - `pluginEnvironments`
+ * - `pluginProcessors`
+ * - `pluginRules`
+ *      The `Map` objects that contain the members of all plugins that this
+ *      config array contains. Those map objects don't have mutation methods.
+ *      Those keys are the member ID such as `pluginId/memberName`.
+ * - `isRoot()`
+ *      If `true` then this configuration has `root:true` property.
+ * - `extractConfig(filePath)`
+ *      Extract the final configuration for a given file. This means merging
+ *      every config array element which that `criteria` property matched. The
+ *      `filePath` argument must be an absolute path.
+ *
+ * `ConfigArrayFactory` provides the loading logic of config files.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { ExtractedConfig } = require("./extracted-config");
+const { IgnorePattern } = require("./ignore-pattern");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+// Define types for VSCode IntelliSense.
+/** @typedef {import("../../shared/types").Environment} Environment */
+/** @typedef {import("../../shared/types").GlobalConf} GlobalConf */
+/** @typedef {import("../../shared/types").RuleConf} RuleConf */
+/** @typedef {import("../../shared/types").Rule} Rule */
+/** @typedef {import("../../shared/types").Plugin} Plugin */
+/** @typedef {import("../../shared/types").Processor} Processor */
+/** @typedef {import("./config-dependency").DependentParser} DependentParser */
+/** @typedef {import("./config-dependency").DependentPlugin} DependentPlugin */
+/** @typedef {import("./override-tester")["OverrideTester"]} OverrideTester */
+
+/**
+ * @typedef {Object} ConfigArrayElement
+ * @property {string} name The name of this config element.
+ * @property {string} filePath The path to the source file of this config element.
+ * @property {InstanceType<OverrideTester>|null} criteria The tester for the `files` and `excludedFiles` of this config element.
+ * @property {Record<string, boolean>|undefined} env The environment settings.
+ * @property {Record<string, GlobalConf>|undefined} globals The global variable settings.
+ * @property {IgnorePattern|undefined} ignorePattern The ignore patterns.
+ * @property {boolean|undefined} noInlineConfig The flag that disables directive comments.
+ * @property {DependentParser|undefined} parser The parser loader.
+ * @property {Object|undefined} parserOptions The parser options.
+ * @property {Record<string, DependentPlugin>|undefined} plugins The plugin loaders.
+ * @property {string|undefined} processor The processor name to refer plugin's processor.
+ * @property {boolean|undefined} reportUnusedDisableDirectives The flag to report unused `eslint-disable` comments.
+ * @property {boolean|undefined} root The flag to express root.
+ * @property {Record<string, RuleConf>|undefined} rules The rule settings
+ * @property {Object|undefined} settings The shared settings.
+ * @property {"config" | "ignore" | "implicit-processor"} type The element type.
+ */
+
+/**
+ * @typedef {Object} ConfigArrayInternalSlots
+ * @property {Map<string, ExtractedConfig>} cache The cache to extract configs.
+ * @property {ReadonlyMap<string, Environment>|null} envMap The map from environment ID to environment definition.
+ * @property {ReadonlyMap<string, Processor>|null} processorMap The map from processor ID to environment definition.
+ * @property {ReadonlyMap<string, Rule>|null} ruleMap The map from rule ID to rule definition.
+ */
+
+/** @type {WeakMap<ConfigArray, ConfigArrayInternalSlots>} */
+const internalSlotsMap = new class extends WeakMap {
+    get(key) {
+        let value = super.get(key);
+
+        if (!value) {
+            value = {
+                cache: new Map(),
+                envMap: null,
+                processorMap: null,
+                ruleMap: null
+            };
+            super.set(key, value);
+        }
+
+        return value;
+    }
+}();
+
+/**
+ * Get the indices which are matched to a given file.
+ * @param {ConfigArrayElement[]} elements The elements.
+ * @param {string} filePath The path to a target file.
+ * @returns {number[]} The indices.
+ */
+function getMatchedIndices(elements, filePath) {
+    const indices = [];
+
+    for (let i = elements.length - 1; i >= 0; --i) {
+        const element = elements[i];
+
+        if (!element.criteria || (filePath && element.criteria.test(filePath))) {
+            indices.push(i);
+        }
+    }
+
+    return indices;
+}
+
+/**
+ * Check if a value is a non-null object.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if the value is a non-null object.
+ */
+function isNonNullObject(x) {
+    return typeof x === "object" && x !== null;
+}
+
+/**
+ * Merge two objects.
+ *
+ * Assign every property values of `y` to `x` if `x` doesn't have the property.
+ * If `x`'s property value is an object, it does recursive.
+ * @param {Object} target The destination to merge
+ * @param {Object|undefined} source The source to merge.
+ * @returns {void}
+ */
+function mergeWithoutOverwrite(target, source) {
+    if (!isNonNullObject(source)) {
+        return;
+    }
+
+    for (const key of Object.keys(source)) {
+        if (key === "__proto__") {
+            continue;
+        }
+
+        if (isNonNullObject(target[key])) {
+            mergeWithoutOverwrite(target[key], source[key]);
+        } else if (target[key] === void 0) {
+            if (isNonNullObject(source[key])) {
+                target[key] = Array.isArray(source[key]) ? [] : {};
+                mergeWithoutOverwrite(target[key], source[key]);
+            } else if (source[key] !== void 0) {
+                target[key] = source[key];
+            }
+        }
+    }
+}
+
+/**
+ * The error for plugin conflicts.
+ */
+class PluginConflictError extends Error {
+
+    /**
+     * Initialize this error object.
+     * @param {string} pluginId The plugin ID.
+     * @param {{filePath:string, importerName:string}[]} plugins The resolved plugins.
+     */
+    constructor(pluginId, plugins) {
+        super(`Plugin "${pluginId}" was conflicted between ${plugins.map(p => `"${p.importerName}"`).join(" and ")}.`);
+        this.messageTemplate = "plugin-conflict";
+        this.messageData = { pluginId, plugins };
+    }
+}
+
+/**
+ * Merge plugins.
+ * `target`'s definition is prior to `source`'s.
+ * @param {Record<string, DependentPlugin>} target The destination to merge
+ * @param {Record<string, DependentPlugin>|undefined} source The source to merge.
+ * @returns {void}
+ */
+function mergePlugins(target, source) {
+    if (!isNonNullObject(source)) {
+        return;
+    }
+
+    for (const key of Object.keys(source)) {
+        if (key === "__proto__") {
+            continue;
+        }
+        const targetValue = target[key];
+        const sourceValue = source[key];
+
+        // Adopt the plugin which was found at first.
+        if (targetValue === void 0) {
+            if (sourceValue.error) {
+                throw sourceValue.error;
+            }
+            target[key] = sourceValue;
+        } else if (sourceValue.filePath !== targetValue.filePath) {
+            throw new PluginConflictError(key, [
+                {
+                    filePath: targetValue.filePath,
+                    importerName: targetValue.importerName
+                },
+                {
+                    filePath: sourceValue.filePath,
+                    importerName: sourceValue.importerName
+                }
+            ]);
+        }
+    }
+}
+
+/**
+ * Merge rule configs.
+ * `target`'s definition is prior to `source`'s.
+ * @param {Record<string, Array>} target The destination to merge
+ * @param {Record<string, RuleConf>|undefined} source The source to merge.
+ * @returns {void}
+ */
+function mergeRuleConfigs(target, source) {
+    if (!isNonNullObject(source)) {
+        return;
+    }
+
+    for (const key of Object.keys(source)) {
+        if (key === "__proto__") {
+            continue;
+        }
+        const targetDef = target[key];
+        const sourceDef = source[key];
+
+        // Adopt the rule config which was found at first.
+        if (targetDef === void 0) {
+            if (Array.isArray(sourceDef)) {
+                target[key] = [...sourceDef];
+            } else {
+                target[key] = [sourceDef];
+            }
+
+        /*
+         * If the first found rule config is severity only and the current rule
+         * config has options, merge the severity and the options.
+         */
+        } else if (
+            targetDef.length === 1 &&
+            Array.isArray(sourceDef) &&
+            sourceDef.length >= 2
+        ) {
+            targetDef.push(...sourceDef.slice(1));
+        }
+    }
+}
+
+/**
+ * Create the extracted config.
+ * @param {ConfigArray} instance The config elements.
+ * @param {number[]} indices The indices to use.
+ * @returns {ExtractedConfig} The extracted config.
+ */
+function createConfig(instance, indices) {
+    const config = new ExtractedConfig();
+    const ignorePatterns = [];
+
+    // Merge elements.
+    for (const index of indices) {
+        const element = instance[index];
+
+        // Adopt the parser which was found at first.
+        if (!config.parser && element.parser) {
+            if (element.parser.error) {
+                throw element.parser.error;
+            }
+            config.parser = element.parser;
+        }
+
+        // Adopt the processor which was found at first.
+        if (!config.processor && element.processor) {
+            config.processor = element.processor;
+        }
+
+        // Adopt the noInlineConfig which was found at first.
+        if (config.noInlineConfig === void 0 && element.noInlineConfig !== void 0) {
+            config.noInlineConfig = element.noInlineConfig;
+            config.configNameOfNoInlineConfig = element.name;
+        }
+
+        // Adopt the reportUnusedDisableDirectives which was found at first.
+        if (config.reportUnusedDisableDirectives === void 0 && element.reportUnusedDisableDirectives !== void 0) {
+            config.reportUnusedDisableDirectives = element.reportUnusedDisableDirectives;
+        }
+
+        // Collect ignorePatterns
+        if (element.ignorePattern) {
+            ignorePatterns.push(element.ignorePattern);
+        }
+
+        // Merge others.
+        mergeWithoutOverwrite(config.env, element.env);
+        mergeWithoutOverwrite(config.globals, element.globals);
+        mergeWithoutOverwrite(config.parserOptions, element.parserOptions);
+        mergeWithoutOverwrite(config.settings, element.settings);
+        mergePlugins(config.plugins, element.plugins);
+        mergeRuleConfigs(config.rules, element.rules);
+    }
+
+    // Create the predicate function for ignore patterns.
+    if (ignorePatterns.length > 0) {
+        config.ignores = IgnorePattern.createIgnore(ignorePatterns.reverse());
+    }
+
+    return config;
+}
+
+/**
+ * Collect definitions.
+ * @template T, U
+ * @param {string} pluginId The plugin ID for prefix.
+ * @param {Record<string,T>} defs The definitions to collect.
+ * @param {Map<string, U>} map The map to output.
+ * @param {function(T): U} [normalize] The normalize function for each value.
+ * @returns {void}
+ */
+function collect(pluginId, defs, map, normalize) {
+    if (defs) {
+        const prefix = pluginId && `${pluginId}/`;
+
+        for (const [key, value] of Object.entries(defs)) {
+            map.set(
+                `${prefix}${key}`,
+                normalize ? normalize(value) : value
+            );
+        }
+    }
+}
+
+/**
+ * Normalize a rule definition.
+ * @param {Function|Rule} rule The rule definition to normalize.
+ * @returns {Rule} The normalized rule definition.
+ */
+function normalizePluginRule(rule) {
+    return typeof rule === "function" ? { create: rule } : rule;
+}
+
+/**
+ * Delete the mutation methods from a given map.
+ * @param {Map<any, any>} map The map object to delete.
+ * @returns {void}
+ */
+function deleteMutationMethods(map) {
+    Object.defineProperties(map, {
+        clear: { configurable: true, value: void 0 },
+        delete: { configurable: true, value: void 0 },
+        set: { configurable: true, value: void 0 }
+    });
+}
+
+/**
+ * Create `envMap`, `processorMap`, `ruleMap` with the plugins in the config array.
+ * @param {ConfigArrayElement[]} elements The config elements.
+ * @param {ConfigArrayInternalSlots} slots The internal slots.
+ * @returns {void}
+ */
+function initPluginMemberMaps(elements, slots) {
+    const processed = new Set();
+
+    slots.envMap = new Map();
+    slots.processorMap = new Map();
+    slots.ruleMap = new Map();
+
+    for (const element of elements) {
+        if (!element.plugins) {
+            continue;
+        }
+
+        for (const [pluginId, value] of Object.entries(element.plugins)) {
+            const plugin = value.definition;
+
+            if (!plugin || processed.has(pluginId)) {
+                continue;
+            }
+            processed.add(pluginId);
+
+            collect(pluginId, plugin.environments, slots.envMap);
+            collect(pluginId, plugin.processors, slots.processorMap);
+            collect(pluginId, plugin.rules, slots.ruleMap, normalizePluginRule);
+        }
+    }
+
+    deleteMutationMethods(slots.envMap);
+    deleteMutationMethods(slots.processorMap);
+    deleteMutationMethods(slots.ruleMap);
+}
+
+/**
+ * Create `envMap`, `processorMap`, `ruleMap` with the plugins in the config array.
+ * @param {ConfigArray} instance The config elements.
+ * @returns {ConfigArrayInternalSlots} The extracted config.
+ */
+function ensurePluginMemberMaps(instance) {
+    const slots = internalSlotsMap.get(instance);
+
+    if (!slots.ruleMap) {
+        initPluginMemberMaps(instance, slots);
+    }
+
+    return slots;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * The Config Array.
+ *
+ * `ConfigArray` instance contains all settings, parsers, and plugins.
+ * You need to call `ConfigArray#extractConfig(filePath)` method in order to
+ * extract, merge and get only the config data which is related to an arbitrary
+ * file.
+ * @extends {Array<ConfigArrayElement>}
+ */
+class ConfigArray extends Array {
+
+    /**
+     * Get the plugin environments.
+     * The returned map cannot be mutated.
+     * @type {ReadonlyMap<string, Environment>} The plugin environments.
+     */
+    get pluginEnvironments() {
+        return ensurePluginMemberMaps(this).envMap;
+    }
+
+    /**
+     * Get the plugin processors.
+     * The returned map cannot be mutated.
+     * @type {ReadonlyMap<string, Processor>} The plugin processors.
+     */
+    get pluginProcessors() {
+        return ensurePluginMemberMaps(this).processorMap;
+    }
+
+    /**
+     * Get the plugin rules.
+     * The returned map cannot be mutated.
+     * @returns {ReadonlyMap<string, Rule>} The plugin rules.
+     */
+    get pluginRules() {
+        return ensurePluginMemberMaps(this).ruleMap;
+    }
+
+    /**
+     * Check if this config has `root` flag.
+     * @returns {boolean} `true` if this config array is root.
+     */
+    isRoot() {
+        for (let i = this.length - 1; i >= 0; --i) {
+            const root = this[i].root;
+
+            if (typeof root === "boolean") {
+                return root;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Extract the config data which is related to a given file.
+     * @param {string} filePath The absolute path to the target file.
+     * @returns {ExtractedConfig} The extracted config data.
+     */
+    extractConfig(filePath) {
+        const { cache } = internalSlotsMap.get(this);
+        const indices = getMatchedIndices(this, filePath);
+        const cacheKey = indices.join(",");
+
+        if (!cache.has(cacheKey)) {
+            cache.set(cacheKey, createConfig(this, indices));
+        }
+
+        return cache.get(cacheKey);
+    }
+
+    /**
+     * Check if a given path is an additional lint target.
+     * @param {string} filePath The absolute path to the target file.
+     * @returns {boolean} `true` if the file is an additional lint target.
+     */
+    isAdditionalTargetPath(filePath) {
+        for (const { criteria, type } of this) {
+            if (
+                type === "config" &&
+                criteria &&
+                !criteria.endsWithWildcard &&
+                criteria.test(filePath)
+            ) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
+
+const exportObject = {
+    ConfigArray,
+
+    /**
+     * Get the used extracted configs.
+     * CLIEngine will use this method to collect used deprecated rules.
+     * @param {ConfigArray} instance The config array object to get.
+     * @returns {ExtractedConfig[]} The used extracted configs.
+     * @private
+     */
+    getUsedExtractedConfigs(instance) {
+        const { cache } = internalSlotsMap.get(instance);
+
+        return Array.from(cache.values());
+    }
+};
+
+module.exports = exportObject;

node_modules/@eslint/eslintrc/lib/config-array/config-dependency.js

+/**
+ * @fileoverview `ConfigDependency` class.
+ *
+ * `ConfigDependency` class expresses a loaded parser or plugin.
+ *
+ * If the parser or plugin was loaded successfully, it has `definition` property
+ * and `filePath` property. Otherwise, it has `error` property.
+ *
+ * When `JSON.stringify()` converted a `ConfigDependency` object to a JSON, it
+ * omits `definition` property.
+ *
+ * `ConfigArrayFactory` creates `ConfigDependency` objects when it loads parsers
+ * or plugins.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const util = require("util");
+
+/**
+ * The class is to store parsers or plugins.
+ * This class hides the loaded object from `JSON.stringify()` and `console.log`.
+ * @template T
+ */
+class ConfigDependency {
+
+    /**
+     * Initialize this instance.
+     * @param {Object} data The dependency data.
+     * @param {T} [data.definition] The dependency if the loading succeeded.
+     * @param {Error} [data.error] The error object if the loading failed.
+     * @param {string} [data.filePath] The actual path to the dependency if the loading succeeded.
+     * @param {string} data.id The ID of this dependency.
+     * @param {string} data.importerName The name of the config file which loads this dependency.
+     * @param {string} data.importerPath The path to the config file which loads this dependency.
+     */
+    constructor({
+        definition = null,
+        error = null,
+        filePath = null,
+        id,
+        importerName,
+        importerPath
+    }) {
+
+        /**
+         * The loaded dependency if the loading succeeded.
+         * @type {T|null}
+         */
+        this.definition = definition;
+
+        /**
+         * The error object if the loading failed.
+         * @type {Error|null}
+         */
+        this.error = error;
+
+        /**
+         * The loaded dependency if the loading succeeded.
+         * @type {string|null}
+         */
+        this.filePath = filePath;
+
+        /**
+         * The ID of this dependency.
+         * @type {string}
+         */
+        this.id = id;
+
+        /**
+         * The name of the config file which loads this dependency.
+         * @type {string}
+         */
+        this.importerName = importerName;
+
+        /**
+         * The path to the config file which loads this dependency.
+         * @type {string}
+         */
+        this.importerPath = importerPath;
+    }
+
+    // eslint-disable-next-line jsdoc/require-description
+    /**
+     * @returns {Object} a JSON compatible object.
+     */
+    toJSON() {
+        const obj = this[util.inspect.custom]();
+
+        // Display `error.message` (`Error#message` is unenumerable).
+        if (obj.error instanceof Error) {
+            obj.error = { ...obj.error, message: obj.error.message };
+        }
+
+        return obj;
+    }
+
+    // eslint-disable-next-line jsdoc/require-description
+    /**
+     * @returns {Object} an object to display by `console.log()`.
+     */
+    [util.inspect.custom]() {
+        const {
+            definition: _ignore, // eslint-disable-line no-unused-vars
+            ...obj
+        } = this;
+
+        return obj;
+    }
+}
+
+/** @typedef {ConfigDependency<import("../../shared/types").Parser>} DependentParser */
+/** @typedef {ConfigDependency<import("../../shared/types").Plugin>} DependentPlugin */
+
+module.exports = { ConfigDependency };

node_modules/@eslint/eslintrc/lib/config-array/extracted-config.js

+/**
+ * @fileoverview `ExtractedConfig` class.
+ *
+ * `ExtractedConfig` class expresses a final configuration for a specific file.
+ *
+ * It provides one method.
+ *
+ * - `toCompatibleObjectAsConfigFileContent()`
+ *      Convert this configuration to the compatible object as the content of
+ *      config files. It converts the loaded parser and plugins to strings.
+ *      `CLIEngine#getConfigForFile(filePath)` method uses this method.
+ *
+ * `ConfigArray#extractConfig(filePath)` creates a `ExtractedConfig` instance.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const { IgnorePattern } = require("./ignore-pattern");
+
+// For VSCode intellisense
+/** @typedef {import("../../shared/types").ConfigData} ConfigData */
+/** @typedef {import("../../shared/types").GlobalConf} GlobalConf */
+/** @typedef {import("../../shared/types").SeverityConf} SeverityConf */
+/** @typedef {import("./config-dependency").DependentParser} DependentParser */
+/** @typedef {import("./config-dependency").DependentPlugin} DependentPlugin */
+
+/**
+ * Check if `xs` starts with `ys`.
+ * @template T
+ * @param {T[]} xs The array to check.
+ * @param {T[]} ys The array that may be the first part of `xs`.
+ * @returns {boolean} `true` if `xs` starts with `ys`.
+ */
+function startsWith(xs, ys) {
+    return xs.length >= ys.length && ys.every((y, i) => y === xs[i]);
+}
+
+/**
+ * The class for extracted config data.
+ */
+class ExtractedConfig {
+    constructor() {
+
+        /**
+         * The config name what `noInlineConfig` setting came from.
+         * @type {string}
+         */
+        this.configNameOfNoInlineConfig = "";
+
+        /**
+         * Environments.
+         * @type {Record<string, boolean>}
+         */
+        this.env = {};
+
+        /**
+         * Global variables.
+         * @type {Record<string, GlobalConf>}
+         */
+        this.globals = {};
+
+        /**
+         * The glob patterns that ignore to lint.
+         * @type {(((filePath:string, dot?:boolean) => boolean) & { basePath:string; patterns:string[] }) | undefined}
+         */
+        this.ignores = void 0;
+
+        /**
+         * The flag that disables directive comments.
+         * @type {boolean|undefined}
+         */
+        this.noInlineConfig = void 0;
+
+        /**
+         * Parser definition.
+         * @type {DependentParser|null}
+         */
+        this.parser = null;
+
+        /**
+         * Options for the parser.
+         * @type {Object}
+         */
+        this.parserOptions = {};
+
+        /**
+         * Plugin definitions.
+         * @type {Record<string, DependentPlugin>}
+         */
+        this.plugins = {};
+
+        /**
+         * Processor ID.
+         * @type {string|null}
+         */
+        this.processor = null;
+
+        /**
+         * The flag that reports unused `eslint-disable` directive comments.
+         * @type {boolean|undefined}
+         */
+        this.reportUnusedDisableDirectives = void 0;
+
+        /**
+         * Rule settings.
+         * @type {Record<string, [SeverityConf, ...any[]]>}
+         */
+        this.rules = {};
+
+        /**
+         * Shared settings.
+         * @type {Object}
+         */
+        this.settings = {};
+    }
+
+    /**
+     * Convert this config to the compatible object as a config file content.
+     * @returns {ConfigData} The converted object.
+     */
+    toCompatibleObjectAsConfigFileContent() {
+        const {
+            /* eslint-disable no-unused-vars */
+            configNameOfNoInlineConfig: _ignore1,
+            processor: _ignore2,
+            /* eslint-enable no-unused-vars */
+            ignores,
+            ...config
+        } = this;
+
+        config.parser = config.parser && config.parser.filePath;
+        config.plugins = Object.keys(config.plugins).filter(Boolean).reverse();
+        config.ignorePatterns = ignores ? ignores.patterns : [];
+
+        // Strip the default patterns from `ignorePatterns`.
+        if (startsWith(config.ignorePatterns, IgnorePattern.DefaultPatterns)) {
+            config.ignorePatterns =
+                config.ignorePatterns.slice(IgnorePattern.DefaultPatterns.length);
+        }
+
+        return config;
+    }
+}
+
+module.exports = { ExtractedConfig };

node_modules/@eslint/eslintrc/lib/config-array/ignore-pattern.js

+/**
+ * @fileoverview `IgnorePattern` class.
+ *
+ * `IgnorePattern` class has the set of glob patterns and the base path.
+ *
+ * It provides two static methods.
+ *
+ * - `IgnorePattern.createDefaultIgnore(cwd)`
+ *      Create the default predicate function.
+ * - `IgnorePattern.createIgnore(ignorePatterns)`
+ *      Create the predicate function from multiple `IgnorePattern` objects.
+ *
+ * It provides two properties and a method.
+ *
+ * - `patterns`
+ *      The glob patterns that ignore to lint.
+ * - `basePath`
+ *      The base path of the glob patterns. If absolute paths existed in the
+ *      glob patterns, those are handled as relative paths to the base path.
+ * - `getPatternsRelativeTo(basePath)`
+ *      Get `patterns` as modified for a given base path. It modifies the
+ *      absolute paths in the patterns as prepending the difference of two base
+ *      paths.
+ *
+ * `ConfigArrayFactory` creates `IgnorePattern` objects when it processes
+ * `ignorePatterns` properties.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert");
+const path = require("path");
+const ignore = require("ignore");
+const debug = require("debug")("eslintrc:ignore-pattern");
+
+/** @typedef {ReturnType<import("ignore").default>} Ignore */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Get the path to the common ancestor directory of given paths.
+ * @param {string[]} sourcePaths The paths to calculate the common ancestor.
+ * @returns {string} The path to the common ancestor directory.
+ */
+function getCommonAncestorPath(sourcePaths) {
+    let result = sourcePaths[0];
+
+    for (let i = 1; i < sourcePaths.length; ++i) {
+        const a = result;
+        const b = sourcePaths[i];
+
+        // Set the shorter one (it's the common ancestor if one includes the other).
+        result = a.length < b.length ? a : b;
+
+        // Set the common ancestor.
+        for (let j = 0, lastSepPos = 0; j < a.length && j < b.length; ++j) {
+            if (a[j] !== b[j]) {
+                result = a.slice(0, lastSepPos);
+                break;
+            }
+            if (a[j] === path.sep) {
+                lastSepPos = j;
+            }
+        }
+    }
+
+    let resolvedResult = result || path.sep;
+
+    // if Windows common ancestor is root of drive must have trailing slash to be absolute.
+    if (resolvedResult && resolvedResult.endsWith(":") && process.platform === "win32") {
+        resolvedResult += path.sep;
+    }
+    return resolvedResult;
+}
+
+/**
+ * Make relative path.
+ * @param {string} from The source path to get relative path.
+ * @param {string} to The destination path to get relative path.
+ * @returns {string} The relative path.
+ */
+function relative(from, to) {
+    const relPath = path.relative(from, to);
+
+    if (path.sep === "/") {
+        return relPath;
+    }
+    return relPath.split(path.sep).join("/");
+}
+
+/**
+ * Get the trailing slash if existed.
+ * @param {string} filePath The path to check.
+ * @returns {string} The trailing slash if existed.
+ */
+function dirSuffix(filePath) {
+    const isDir = (
+        filePath.endsWith(path.sep) ||
+        (process.platform === "win32" && filePath.endsWith("/"))
+    );
+
+    return isDir ? "/" : "";
+}
+
+const DefaultPatterns = Object.freeze(["/**/node_modules/*"]);
+const DotPatterns = Object.freeze([".*", "!.eslintrc.*", "!../"]);
+
+//------------------------------------------------------------------------------
+// Public
+//------------------------------------------------------------------------------
+
+class IgnorePattern {
+
+    /**
+     * The default patterns.
+     * @type {string[]}
+     */
+    static get DefaultPatterns() {
+        return DefaultPatterns;
+    }
+
+    /**
+     * Create the default predicate function.
+     * @param {string} cwd The current working directory.
+     * @returns {((filePath:string, dot:boolean) => boolean) & {basePath:string; patterns:string[]}}
+     * The preficate function.
+     * The first argument is an absolute path that is checked.
+     * The second argument is the flag to not ignore dotfiles.
+     * If the predicate function returned `true`, it means the path should be ignored.
+     */
+    static createDefaultIgnore(cwd) {
+        return this.createIgnore([new IgnorePattern(DefaultPatterns, cwd)]);
+    }
+
+    /**
+     * Create the predicate function from multiple `IgnorePattern` objects.
+     * @param {IgnorePattern[]} ignorePatterns The list of ignore patterns.
+     * @returns {((filePath:string, dot?:boolean) => boolean) & {basePath:string; patterns:string[]}}
+     * The preficate function.
+     * The first argument is an absolute path that is checked.
+     * The second argument is the flag to not ignore dotfiles.
+     * If the predicate function returned `true`, it means the path should be ignored.
+     */
+    static createIgnore(ignorePatterns) {
+        debug("Create with: %o", ignorePatterns);
+
+        const basePath = getCommonAncestorPath(ignorePatterns.map(p => p.basePath));
+        const patterns = [].concat(
+            ...ignorePatterns.map(p => p.getPatternsRelativeTo(basePath))
+        );
+        const ig = ignore().add([...DotPatterns, ...patterns]);
+        const dotIg = ignore().add(patterns);
+
+        debug("  processed: %o", { basePath, patterns });
+
+        return Object.assign(
+            (filePath, dot = false) => {
+                assert(path.isAbsolute(filePath), "'filePath' should be an absolute path.");
+                const relPathRaw = relative(basePath, filePath);
+                const relPath = relPathRaw && (relPathRaw + dirSuffix(filePath));
+                const adoptedIg = dot ? dotIg : ig;
+                const result = relPath !== "" && adoptedIg.ignores(relPath);
+
+                debug("Check", { filePath, dot, relativePath: relPath, result });
+                return result;
+            },
+            { basePath, patterns }
+        );
+    }
+
+    /**
+     * Initialize a new `IgnorePattern` instance.
+     * @param {string[]} patterns The glob patterns that ignore to lint.
+     * @param {string} basePath The base path of `patterns`.
+     */
+    constructor(patterns, basePath) {
+        assert(path.isAbsolute(basePath), "'basePath' should be an absolute path.");
+
+        /**
+         * The glob patterns that ignore to lint.
+         * @type {string[]}
+         */
+        this.patterns = patterns;
+
+        /**
+         * The base path of `patterns`.
+         * @type {string}
+         */
+        this.basePath = basePath;
+
+        /**
+         * If `true` then patterns which don't start with `/` will match the paths to the outside of `basePath`. Defaults to `false`.
+         *
+         * It's set `true` for `.eslintignore`, `package.json`, and `--ignore-path` for backward compatibility.
+         * It's `false` as-is for `ignorePatterns` property in config files.
+         * @type {boolean}
+         */
+        this.loose = false;
+    }
+
+    /**
+     * Get `patterns` as modified for a given base path. It modifies the
+     * absolute paths in the patterns as prepending the difference of two base
+     * paths.
+     * @param {string} newBasePath The base path.
+     * @returns {string[]} Modifired patterns.
+     */
+    getPatternsRelativeTo(newBasePath) {
+        assert(path.isAbsolute(newBasePath), "'newBasePath' should be an absolute path.");
+        const { basePath, loose, patterns } = this;
+
+        if (newBasePath === basePath) {
+            return patterns;
+        }
+        const prefix = `/${relative(newBasePath, basePath)}`;
+
+        return patterns.map(pattern => {
+            const negative = pattern.startsWith("!");
+            const head = negative ? "!" : "";
+            const body = negative ? pattern.slice(1) : pattern;
+
+            if (body.startsWith("/") || body.startsWith("../")) {
+                return `${head}${prefix}${body}`;
+            }
+            return loose ? pattern : `${head}${prefix}/**/${body}`;
+        });
+    }
+}
+
+module.exports = { IgnorePattern };

node_modules/@eslint/eslintrc/lib/config-array/index.js

+/**
+ * @fileoverview `ConfigArray` class.
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const { ConfigArray, getUsedExtractedConfigs } = require("./config-array");
+const { ConfigDependency } = require("./config-dependency");
+const { ExtractedConfig } = require("./extracted-config");
+const { IgnorePattern } = require("./ignore-pattern");
+const { OverrideTester } = require("./override-tester");
+
+module.exports = {
+    ConfigArray,
+    ConfigDependency,
+    ExtractedConfig,
+    IgnorePattern,
+    OverrideTester,
+    getUsedExtractedConfigs
+};

node_modules/@eslint/eslintrc/lib/config-array/override-tester.js

+/**
+ * @fileoverview `OverrideTester` class.
+ *
+ * `OverrideTester` class handles `files` property and `excludedFiles` property
+ * of `overrides` config.
+ *
+ * It provides one method.
+ *
+ * - `test(filePath)`
+ *      Test if a file path matches the pair of `files` property and
+ *      `excludedFiles` property. The `filePath` argument must be an absolute
+ *      path.
+ *
+ * `ConfigArrayFactory` creates `OverrideTester` objects when it processes
+ * `overrides` properties.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const assert = require("assert");
+const path = require("path");
+const util = require("util");
+const { Minimatch } = require("minimatch");
+const minimatchOpts = { dot: true, matchBase: true };
+
+/**
+ * @typedef {Object} Pattern
+ * @property {InstanceType<Minimatch>[] | null} includes The positive matchers.
+ * @property {InstanceType<Minimatch>[] | null} excludes The negative matchers.
+ */
+
+/**
+ * Normalize a given pattern to an array.
+ * @param {string|string[]|undefined} patterns A glob pattern or an array of glob patterns.
+ * @returns {string[]|null} Normalized patterns.
+ * @private
+ */
+function normalizePatterns(patterns) {
+    if (Array.isArray(patterns)) {
+        return patterns.filter(Boolean);
+    }
+    if (typeof patterns === "string" && patterns) {
+        return [patterns];
+    }
+    return [];
+}
+
+/**
+ * Create the matchers of given patterns.
+ * @param {string[]} patterns The patterns.
+ * @returns {InstanceType<Minimatch>[] | null} The matchers.
+ */
+function toMatcher(patterns) {
+    if (patterns.length === 0) {
+        return null;
+    }
+    return patterns.map(pattern => {
+        if (/^\.[/\\]/u.test(pattern)) {
+            return new Minimatch(
+                pattern.slice(2),
+
+                // `./*.js` should not match with `subdir/foo.js`
+                { ...minimatchOpts, matchBase: false }
+            );
+        }
+        return new Minimatch(pattern, minimatchOpts);
+    });
+}
+
+/**
+ * Convert a given matcher to string.
+ * @param {Pattern} matchers The matchers.
+ * @returns {string} The string expression of the matcher.
+ */
+function patternToJson({ includes, excludes }) {
+    return {
+        includes: includes && includes.map(m => m.pattern),
+        excludes: excludes && excludes.map(m => m.pattern)
+    };
+}
+
+/**
+ * The class to test given paths are matched by the patterns.
+ */
+class OverrideTester {
+
+    /**
+     * Create a tester with given criteria.
+     * If there are no criteria, returns `null`.
+     * @param {string|string[]} files The glob patterns for included files.
+     * @param {string|string[]} excludedFiles The glob patterns for excluded files.
+     * @param {string} basePath The path to the base directory to test paths.
+     * @returns {OverrideTester|null} The created instance or `null`.
+     */
+    static create(files, excludedFiles, basePath) {
+        const includePatterns = normalizePatterns(files);
+        const excludePatterns = normalizePatterns(excludedFiles);
+        let endsWithWildcard = false;
+
+        if (includePatterns.length === 0) {
+            return null;
+        }
+
+        // Rejects absolute paths or relative paths to parents.
+        for (const pattern of includePatterns) {
+            if (path.isAbsolute(pattern) || pattern.includes("..")) {
+                throw new Error(`Invalid override pattern (expected relative path not containing '..'): ${pattern}`);
+            }
+            if (pattern.endsWith("*")) {
+                endsWithWildcard = true;
+            }
+        }
+        for (const pattern of excludePatterns) {
+            if (path.isAbsolute(pattern) || pattern.includes("..")) {
+                throw new Error(`Invalid override pattern (expected relative path not containing '..'): ${pattern}`);
+            }
+        }
+
+        const includes = toMatcher(includePatterns);
+        const excludes = toMatcher(excludePatterns);
+
+        return new OverrideTester(
+            [{ includes, excludes }],
+            basePath,
+            endsWithWildcard
+        );
+    }
+
+    /**
+     * Combine two testers by logical and.
+     * If either of the testers was `null`, returns the other tester.
+     * The `basePath` property of the two must be the same value.
+     * @param {OverrideTester|null} a A tester.
+     * @param {OverrideTester|null} b Another tester.
+     * @returns {OverrideTester|null} Combined tester.
+     */
+    static and(a, b) {
+        if (!b) {
+            return a && new OverrideTester(
+                a.patterns,
+                a.basePath,
+                a.endsWithWildcard
+            );
+        }
+        if (!a) {
+            return new OverrideTester(
+                b.patterns,
+                b.basePath,
+                b.endsWithWildcard
+            );
+        }
+
+        assert.strictEqual(a.basePath, b.basePath);
+        return new OverrideTester(
+            a.patterns.concat(b.patterns),
+            a.basePath,
+            a.endsWithWildcard || b.endsWithWildcard
+        );
+    }
+
+    /**
+     * Initialize this instance.
+     * @param {Pattern[]} patterns The matchers.
+     * @param {string} basePath The base path.
+     * @param {boolean} endsWithWildcard If `true` then a pattern ends with `*`.
+     */
+    constructor(patterns, basePath, endsWithWildcard = false) {
+
+        /** @type {Pattern[]} */
+        this.patterns = patterns;
+
+        /** @type {string} */
+        this.basePath = basePath;
+
+        /** @type {boolean} */
+        this.endsWithWildcard = endsWithWildcard;
+    }
+
+    /**
+     * Test if a given path is matched or not.
+     * @param {string} filePath The absolute path to the target file.
+     * @returns {boolean} `true` if the path was matched.
+     */
+    test(filePath) {
+        if (typeof filePath !== "string" || !path.isAbsolute(filePath)) {
+            throw new Error(`'filePath' should be an absolute path, but got ${filePath}.`);
+        }
+        const relativePath = path.relative(this.basePath, filePath);
+
+        return this.patterns.every(({ includes, excludes }) => (
+            (!includes || includes.some(m => m.match(relativePath))) &&
+            (!excludes || !excludes.some(m => m.match(relativePath)))
+        ));
+    }
+
+    // eslint-disable-next-line jsdoc/require-description
+    /**
+     * @returns {Object} a JSON compatible object.
+     */
+    toJSON() {
+        if (this.patterns.length === 1) {
+            return {
+                ...patternToJson(this.patterns[0]),
+                basePath: this.basePath
+            };
+        }
+        return {
+            AND: this.patterns.map(patternToJson),
+            basePath: this.basePath
+        };
+    }
+
+    // eslint-disable-next-line jsdoc/require-description
+    /**
+     * @returns {Object} an object to display by `console.log()`.
+     */
+    [util.inspect.custom]() {
+        return this.toJSON();
+    }
+}
+
+module.exports = { OverrideTester };

node_modules/@eslint/eslintrc/lib/flat-compat.js

+/**
+ * @fileoverview Compatibility class for flat config.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const path = require("path");
+const environments = require("../conf/environments");
+const createDebug = require("debug");
+const { ConfigArrayFactory } = require("./config-array-factory");
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+/** @typedef {import("../../shared/types").Environment} Environment */
+/** @typedef {import("../../shared/types").Processor} Processor */
+
+const debug = createDebug("eslintrc:flat-compat");
+const cafactory = Symbol("cafactory");
+
+/**
+ * Translates an ESLintRC-style config object into a flag-config-style config
+ * object.
+ * @param {Object} eslintrcConfig An ESLintRC-style config object.
+ * @param {Object} options Options to help translate the config.
+ * @param {string} options.resolveConfigRelativeTo To the directory to resolve
+ *      configs from.
+ * @param {string} options.resolvePluginsRelativeTo The directory to resolve
+ *      plugins from.
+ * @param {ReadOnlyMap<string,Environment>} options.pluginEnvironments A map of plugin environment
+ *      names to objects.
+ * @param {ReadOnlyMap<string,Processor>} options.pluginProcessors A map of plugin processor
+ *      names to objects.
+ * @returns {Object} A flag-config-style config object.
+ */
+function translateESLintRC(eslintrcConfig, {
+    resolveConfigRelativeTo,
+    resolvePluginsRelativeTo,
+    pluginEnvironments,
+    pluginProcessors
+}) {
+
+    const flatConfig = {};
+    const configs = [];
+    const languageOptions = {};
+    const linterOptions = {};
+    const keysToCopy = ["settings", "rules", "processor"];
+    const languageOptionsKeysToCopy = ["globals", "parser", "parserOptions"];
+    const linterOptionsKeysToCopy = ["noInlineConfig", "reportUnusedDisableDirectives"];
+
+    // check for special settings for eslint:all and eslint:recommended:
+    if (eslintrcConfig.settings) {
+        if (eslintrcConfig.settings["eslint:all"] === true) {
+            return ["eslint:all"];
+        }
+
+        if (eslintrcConfig.settings["eslint:recommended"] === true) {
+            return ["eslint:recommended"];
+        }
+    }
+
+    // copy over simple translations
+    for (const key of keysToCopy) {
+        if (key in eslintrcConfig && typeof eslintrcConfig[key] !== "undefined") {
+            flatConfig[key] = eslintrcConfig[key];
+        }
+    }
+
+    // copy over languageOptions
+    for (const key of languageOptionsKeysToCopy) {
+        if (key in eslintrcConfig && typeof eslintrcConfig[key] !== "undefined") {
+
+            // create the languageOptions key in the flat config
+            flatConfig.languageOptions = languageOptions;
+
+            if (key === "parser") {
+                debug(`Resolving parser '${languageOptions[key]}' relative to ${resolveConfigRelativeTo}`);
+
+                if (eslintrcConfig[key].error) {
+                    throw eslintrcConfig[key].error;
+                }
+
+                languageOptions[key] = eslintrcConfig[key].definition;
+                continue;
+            }
+
+            // clone any object values that are in the eslintrc config
+            if (eslintrcConfig[key] && typeof eslintrcConfig[key] === "object") {
+                languageOptions[key] = {
+                    ...eslintrcConfig[key]
+                };
+            } else {
+                languageOptions[key] = eslintrcConfig[key];
+            }
+        }
+    }
+
+    // copy over linterOptions
+    for (const key of linterOptionsKeysToCopy) {
+        if (key in eslintrcConfig && typeof eslintrcConfig[key] !== "undefined") {
+            flatConfig.linterOptions = linterOptions;
+            linterOptions[key] = eslintrcConfig[key];
+        }
+    }
+
+    // move ecmaVersion a level up
+    if (languageOptions.parserOptions) {
+
+        if ("ecmaVersion" in languageOptions.parserOptions) {
+            languageOptions.ecmaVersion = languageOptions.parserOptions.ecmaVersion;
+            delete languageOptions.parserOptions.ecmaVersion;
+        }
+
+        if ("sourceType" in languageOptions.parserOptions) {
+            languageOptions.sourceType = languageOptions.parserOptions.sourceType;
+            delete languageOptions.parserOptions.sourceType;
+        }
+
+        // check to see if we even need parserOptions anymore and remove it if not
+        if (Object.keys(languageOptions.parserOptions).length === 0) {
+            delete languageOptions.parserOptions;
+        }
+    }
+
+    // overrides
+    if (eslintrcConfig.criteria) {
+        flatConfig.files = [absoluteFilePath => eslintrcConfig.criteria.test(absoluteFilePath)];
+    }
+
+    // translate plugins
+    if (eslintrcConfig.plugins && typeof eslintrcConfig.plugins === "object") {
+        debug(`Translating plugins: ${eslintrcConfig.plugins}`);
+
+        flatConfig.plugins = {};
+
+        for (const pluginName of Object.keys(eslintrcConfig.plugins)) {
+
+            debug(`Translating plugin: ${pluginName}`);
+            debug(`Resolving plugin '${pluginName} relative to ${resolvePluginsRelativeTo}`);
+
+            const { definition: plugin, error } = eslintrcConfig.plugins[pluginName];
+
+            if (error) {
+                throw error;
+            }
+
+            flatConfig.plugins[pluginName] = plugin;
+
+            // create a config for any processors
+            if (plugin.processors) {
+                for (const processorName of Object.keys(plugin.processors)) {
+                    if (processorName.startsWith(".")) {
+                        debug(`Assigning processor: ${pluginName}/${processorName}`);
+
+                        configs.unshift({
+                            files: [`**/*${processorName}`],
+                            processor: pluginProcessors.get(`${pluginName}/${processorName}`)
+                        });
+                    }
+
+                }
+            }
+        }
+    }
+
+    // translate env - must come after plugins
+    if (eslintrcConfig.env && typeof eslintrcConfig.env === "object") {
+        for (const envName of Object.keys(eslintrcConfig.env)) {
+
+            // only add environments that are true
+            if (eslintrcConfig.env[envName]) {
+                debug(`Translating environment: ${envName}`);
+
+                if (environments.has(envName)) {
+
+                    // built-in environments should be defined first
+                    configs.unshift(...translateESLintRC(environments.get(envName), {
+                        resolveConfigRelativeTo,
+                        resolvePluginsRelativeTo
+                    }));
+                } else if (pluginEnvironments.has(envName)) {
+
+                    // if the environment comes from a plugin, it should come after the plugin config
+                    configs.push(...translateESLintRC(pluginEnvironments.get(envName), {
+                        resolveConfigRelativeTo,
+                        resolvePluginsRelativeTo
+                    }));
+                }
+            }
+        }
+    }
+
+    // only add if there are actually keys in the config
+    if (Object.keys(flatConfig).length > 0) {
+        configs.push(flatConfig);
+    }
+
+    return configs;
+}
+
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+/**
+ * A compatibility class for working with configs.
+ */
+class FlatCompat {
+
+    constructor({
+        baseDirectory = process.cwd(),
+        resolvePluginsRelativeTo = baseDirectory
+    } = {}) {
+        this.baseDirectory = baseDirectory;
+        this.resolvePluginsRelativeTo = resolvePluginsRelativeTo;
+        this[cafactory] = new ConfigArrayFactory({
+            cwd: baseDirectory,
+            resolvePluginsRelativeTo,
+            eslintAllPath: path.resolve(__dirname, "../conf/eslint-all.js"),
+            eslintRecommendedPath: path.resolve(__dirname, "../conf/eslint-recommended.js")
+        });
+    }
+
+    /**
+     * Translates an ESLintRC-style config into a flag-config-style config.
+     * @param {Object} eslintrcConfig The ESLintRC-style config object.
+     * @returns {Object} A flag-config-style config object.
+     */
+    config(eslintrcConfig) {
+        const eslintrcArray = this[cafactory].create(eslintrcConfig, {
+            basePath: this.baseDirectory
+        });
+
+        const flatArray = [];
+        let hasIgnorePatterns = false;
+
+        eslintrcArray.forEach(configData => {
+            if (configData.type === "config") {
+                hasIgnorePatterns = hasIgnorePatterns || configData.ignorePattern;
+                flatArray.push(...translateESLintRC(configData, {
+                    resolveConfigRelativeTo: path.join(this.baseDirectory, "__placeholder.js"),
+                    resolvePluginsRelativeTo: path.join(this.resolvePluginsRelativeTo, "__placeholder.js"),
+                    pluginEnvironments: eslintrcArray.pluginEnvironments,
+                    pluginProcessors: eslintrcArray.pluginProcessors
+                }));
+            }
+        });
+
+        // combine ignorePatterns to emulate ESLintRC behavior better
+        if (hasIgnorePatterns) {
+            flatArray.unshift({
+                ignores: [filePath => {
+
+                    // Compute the final config for this file.
+                    // This filters config array elements by `files`/`excludedFiles` then merges the elements.
+                    const finalConfig = eslintrcArray.extractConfig(filePath);
+
+                    // Test the `ignorePattern` properties of the final config.
+                    return Boolean(finalConfig.ignores) && finalConfig.ignores(filePath);
+                }]
+            });
+        }
+
+        return flatArray;
+    }
+
+    /**
+     * Translates the `env` section of an ESLintRC-style config.
+     * @param {Object} envConfig The `env` section of an ESLintRC config.
+     * @returns {Object} A flag-config object representing the environments.
+     */
+    env(envConfig) {
+        return this.config({
+            env: envConfig
+        });
+    }
+
+    /**
+     * Translates the `extends` section of an ESLintRC-style config.
+     * @param {...string} configsToExtend The names of the configs to load.
+     * @returns {Object} A flag-config object representing the config.
+     */
+    extends(...configsToExtend) {
+        return this.config({
+            extends: configsToExtend
+        });
+    }
+
+    /**
+     * Translates the `plugins` section of an ESLintRC-style config.
+     * @param {...string} plugins The names of the plugins to load.
+     * @returns {Object} A flag-config object representing the plugins.
+     */
+    plugins(...plugins) {
+        return this.config({
+            plugins
+        });
+    }
+}
+
+exports.FlatCompat = FlatCompat;

node_modules/@eslint/eslintrc/lib/index.js

+/**
+ * @fileoverview Package exports for @eslint/eslintrc
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    ConfigArrayFactory,
+    createContext: createConfigArrayFactoryContext
+} = require("./config-array-factory");
+
+const { CascadingConfigArrayFactory } = require("./cascading-config-array-factory");
+const ModuleResolver = require("./shared/relative-module-resolver");
+const { ConfigArray, getUsedExtractedConfigs } = require("./config-array");
+const { ConfigDependency } = require("./config-array/config-dependency");
+const { ExtractedConfig } = require("./config-array/extracted-config");
+const { IgnorePattern } = require("./config-array/ignore-pattern");
+const { OverrideTester } = require("./config-array/override-tester");
+const ConfigOps = require("./shared/config-ops");
+const ConfigValidator = require("./shared/config-validator");
+const naming = require("./shared/naming");
+const { FlatCompat } = require("./flat-compat");
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+
+    Legacy: {
+        ConfigArray,
+        createConfigArrayFactoryContext,
+        CascadingConfigArrayFactory,
+        ConfigArrayFactory,
+        ConfigDependency,
+        ExtractedConfig,
+        IgnorePattern,
+        OverrideTester,
+        getUsedExtractedConfigs,
+
+        // shared
+        ConfigOps,
+        ConfigValidator,
+        ModuleResolver,
+        naming
+    },
+
+    FlatCompat
+
+};

node_modules/@eslint/eslintrc/lib/shared/ajv.js

+/**
+ * @fileoverview The instance of Ajv validator.
+ * @author Evgeny Poberezkin
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Ajv = require("ajv"),
+    metaSchema = require("ajv/lib/refs/json-schema-draft-04.json");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = (additionalOptions = {}) => {
+    const ajv = new Ajv({
+        meta: false,
+        useDefaults: true,
+        validateSchema: false,
+        missingRefs: "ignore",
+        verbose: true,
+        schemaId: "auto",
+        ...additionalOptions
+    });
+
+    ajv.addMetaSchema(metaSchema);
+    // eslint-disable-next-line no-underscore-dangle
+    ajv._opts.defaultMeta = metaSchema.id;
+
+    return ajv;
+};