1183 lines
34 KiB
Plaintext
1183 lines
34 KiB
Plaintext
/**
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* @fileoverview Main class using flat config
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* @author Nicholas C. Zakas
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const fs = require("node:fs/promises");
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const { existsSync } = require("node:fs");
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const path = require("node:path");
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const { version } = require("../../package.json");
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const { Linter } = require("../linter");
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const { getRuleFromConfig } = require("../config/flat-config-helpers");
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const { defaultConfig } = require("../config/default-config");
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const {
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Legacy: {
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ConfigOps: { getRuleSeverity },
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ModuleResolver,
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naming,
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},
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} = require("@eslint/eslintrc");
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const {
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findFiles,
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getCacheFile,
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isNonEmptyString,
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isArrayOfNonEmptyString,
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createIgnoreResult,
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isErrorMessage,
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processOptions,
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} = require("./eslint-helpers");
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const { pathToFileURL } = require("node:url");
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const LintResultCache = require("../cli-engine/lint-result-cache");
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const { Retrier } = require("@humanwhocodes/retry");
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const { ConfigLoader, LegacyConfigLoader } = require("../config/config-loader");
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/*
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* This is necessary to allow overwriting writeFile for testing purposes.
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* We can just use fs/promises once we drop Node.js 12 support.
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*/
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//------------------------------------------------------------------------------
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// Typedefs
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//------------------------------------------------------------------------------
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// For VSCode IntelliSense
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/** @typedef {import("../cli-engine/cli-engine").ConfigArray} ConfigArray */
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/** @typedef {import("../shared/types").ConfigData} ConfigData */
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/** @typedef {import("../shared/types").DeprecatedRuleInfo} DeprecatedRuleInfo */
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/** @typedef {import("../shared/types").LintMessage} LintMessage */
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/** @typedef {import("../shared/types").LintResult} LintResult */
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/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
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/** @typedef {import("../shared/types").Plugin} Plugin */
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/** @typedef {import("../shared/types").ResultsMeta} ResultsMeta */
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/** @typedef {import("../shared/types").RuleConf} RuleConf */
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/** @typedef {import("../shared/types").Rule} Rule */
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/** @typedef {ReturnType<ConfigArray.extractConfig>} ExtractedConfig */
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/** @typedef {import('../cli-engine/cli-engine').CLIEngine} CLIEngine */
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/** @typedef {import('./legacy-eslint').CLIEngineLintReport} CLIEngineLintReport */
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/**
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* The options with which to configure the ESLint instance.
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* @typedef {Object} ESLintOptions
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* @property {boolean} [allowInlineConfig] Enable or disable inline configuration comments.
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* @property {ConfigData|Array<ConfigData>} [baseConfig] Base config, extended by all configs used with this instance
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* @property {boolean} [cache] Enable result caching.
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* @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
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* @property {"metadata" | "content"} [cacheStrategy] The strategy used to detect changed files.
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* @property {string} [cwd] The value to use for the current working directory.
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* @property {boolean} [errorOnUnmatchedPattern] If `false` then `ESLint#lintFiles()` doesn't throw even if no target files found. Defaults to `true`.
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* @property {boolean|Function} [fix] Execute in autofix mode. If a function, should return a boolean.
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* @property {string[]} [fixTypes] Array of rule types to apply fixes for.
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* @property {string[]} [flags] Array of feature flags to enable.
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* @property {boolean} [globInputPaths] Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
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* @property {boolean} [ignore] False disables all ignore patterns except for the default ones.
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* @property {string[]} [ignorePatterns] Ignore file patterns to use in addition to config ignores. These patterns are relative to `cwd`.
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* @property {ConfigData|Array<ConfigData>} [overrideConfig] Override config, overrides all configs used with this instance
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* @property {boolean|string} [overrideConfigFile] Searches for default config file when falsy;
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* doesn't do any config file lookup when `true`; considered to be a config filename
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* when a string.
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* @property {Record<string,Plugin>} [plugins] An array of plugin implementations.
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* @property {boolean} [stats] True enables added statistics on lint results.
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* @property {boolean} [warnIgnored] Show warnings when the file list includes ignored files
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* @property {boolean} [passOnNoPatterns=false] When set to true, missing patterns cause
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* the linting operation to short circuit and not report any failures.
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*/
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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const debug = require("debug")("eslint:eslint");
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const privateMembers = new WeakMap();
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const removedFormatters = new Set([
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"checkstyle",
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"codeframe",
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"compact",
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"jslint-xml",
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"junit",
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"table",
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"tap",
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"unix",
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"visualstudio",
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]);
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/**
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* It will calculate the error and warning count for collection of messages per file
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* @param {LintMessage[]} messages Collection of messages
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* @returns {Object} Contains the stats
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* @private
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*/
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function calculateStatsPerFile(messages) {
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const stat = {
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errorCount: 0,
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fatalErrorCount: 0,
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warningCount: 0,
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fixableErrorCount: 0,
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fixableWarningCount: 0,
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};
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for (let i = 0; i < messages.length; i++) {
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const message = messages[i];
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if (message.fatal || message.severity === 2) {
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stat.errorCount++;
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if (message.fatal) {
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stat.fatalErrorCount++;
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}
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if (message.fix) {
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stat.fixableErrorCount++;
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}
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} else {
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stat.warningCount++;
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if (message.fix) {
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stat.fixableWarningCount++;
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}
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}
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}
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return stat;
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}
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/**
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* Create rulesMeta object.
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* @param {Map<string,Rule>} rules a map of rules from which to generate the object.
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* @returns {Object} metadata for all enabled rules.
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*/
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function createRulesMeta(rules) {
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return Array.from(rules).reduce((retVal, [id, rule]) => {
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retVal[id] = rule.meta;
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return retVal;
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}, {});
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}
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/**
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* Return the absolute path of a file named `"__placeholder__.js"` in a given directory.
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* This is used as a replacement for a missing file path.
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* @param {string} cwd An absolute directory path.
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* @returns {string} The absolute path of a file named `"__placeholder__.js"` in the given directory.
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*/
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function getPlaceholderPath(cwd) {
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return path.join(cwd, "__placeholder__.js");
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}
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/** @type {WeakMap<ExtractedConfig, DeprecatedRuleInfo[]>} */
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const usedDeprecatedRulesCache = new WeakMap();
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/**
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* Create used deprecated rule list.
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* @param {CLIEngine} eslint The CLIEngine instance.
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* @param {string} maybeFilePath The absolute path to a lint target file or `"<text>"`.
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* @returns {DeprecatedRuleInfo[]} The used deprecated rule list.
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*/
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function getOrFindUsedDeprecatedRules(eslint, maybeFilePath) {
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const {
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options: { cwd },
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configLoader,
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} = privateMembers.get(eslint);
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const filePath = path.isAbsolute(maybeFilePath)
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? maybeFilePath
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: getPlaceholderPath(cwd);
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const configs = configLoader.getCachedConfigArrayForFile(filePath);
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const config = configs.getConfig(filePath);
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// Most files use the same config, so cache it.
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if (config && !usedDeprecatedRulesCache.has(config)) {
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const retv = [];
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if (config.rules) {
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for (const [ruleId, ruleConf] of Object.entries(config.rules)) {
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if (getRuleSeverity(ruleConf) === 0) {
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continue;
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}
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const rule = getRuleFromConfig(ruleId, config);
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const meta = rule && rule.meta;
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if (meta && meta.deprecated) {
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const usesNewFormat = typeof meta.deprecated === "object";
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retv.push({
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ruleId,
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replacedBy: usesNewFormat
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? (meta.deprecated.replacedBy?.map(
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replacement =>
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`${replacement.plugin?.name !== void 0 ? `${naming.getShorthandName(replacement.plugin.name, "eslint-plugin")}/` : ""}${replacement.rule?.name ?? ""}`,
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) ?? [])
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: meta.replacedBy || [],
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info: usesNewFormat ? meta.deprecated : void 0,
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});
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}
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}
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}
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usedDeprecatedRulesCache.set(config, Object.freeze(retv));
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}
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return config ? usedDeprecatedRulesCache.get(config) : Object.freeze([]);
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}
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/**
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* Processes the linting results generated by a CLIEngine linting report to
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* match the ESLint class's API.
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* @param {CLIEngine} eslint The CLIEngine instance.
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* @param {CLIEngineLintReport} report The CLIEngine linting report to process.
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* @returns {LintResult[]} The processed linting results.
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*/
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function processLintReport(eslint, { results }) {
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const descriptor = {
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configurable: true,
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enumerable: true,
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get() {
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return getOrFindUsedDeprecatedRules(eslint, this.filePath);
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},
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};
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for (const result of results) {
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Object.defineProperty(result, "usedDeprecatedRules", descriptor);
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}
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return results;
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}
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/**
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* An Array.prototype.sort() compatible compare function to order results by their file path.
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* @param {LintResult} a The first lint result.
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* @param {LintResult} b The second lint result.
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* @returns {number} An integer representing the order in which the two results should occur.
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*/
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function compareResultsByFilePath(a, b) {
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if (a.filePath < b.filePath) {
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return -1;
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}
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if (a.filePath > b.filePath) {
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return 1;
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}
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return 0;
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}
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/**
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* Determines which config file to use. This is determined by seeing if an
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* override config file was passed, and if so, using it; otherwise, as long
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* as override config file is not explicitly set to `false`, it will search
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* upwards from the cwd for a file named `eslint.config.js`.
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*
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* This function is used primarily by the `--inspect-config` option. For now,
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* we will maintain the existing behavior, which is to search up from the cwd.
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* @param {ESLintOptions} options The ESLint instance options.
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* @returns {Promise<{configFilePath:string|undefined;basePath:string}>} Location information for
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* the config file.
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*/
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async function locateConfigFileToUse({ configFile, cwd }) {
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const configLoader = new ConfigLoader({
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cwd,
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configFile,
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});
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const configFilePath = await configLoader.findConfigFileForPath(
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path.join(cwd, "__placeholder__.js"),
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);
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if (!configFilePath) {
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throw new Error("No ESLint configuration file was found.");
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}
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return {
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configFilePath,
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basePath: configFile ? cwd : path.dirname(configFilePath),
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};
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}
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/**
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* Processes an source code using ESLint.
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* @param {Object} config The config object.
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* @param {string} config.text The source code to verify.
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* @param {string} config.cwd The path to the current working directory.
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* @param {string|undefined} config.filePath The path to the file of `text`. If this is undefined, it uses `<text>`.
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* @param {FlatConfigArray} config.configs The config.
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* @param {boolean} config.fix If `true` then it does fix.
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* @param {boolean} config.allowInlineConfig If `true` then it uses directive comments.
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* @param {Function} config.ruleFilter A predicate function to filter which rules should be run.
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* @param {boolean} config.stats If `true`, then if reports extra statistics with the lint results.
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* @param {Linter} config.linter The linter instance to verify.
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* @returns {LintResult} The result of linting.
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* @private
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*/
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function verifyText({
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text,
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cwd,
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filePath: providedFilePath,
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configs,
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fix,
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allowInlineConfig,
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ruleFilter,
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stats,
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linter,
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}) {
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const filePath = providedFilePath || "<text>";
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debug(`Lint ${filePath}`);
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/*
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* Verify.
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* `config.extractConfig(filePath)` requires an absolute path, but `linter`
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* doesn't know CWD, so it gives `linter` an absolute path always.
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*/
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const filePathToVerify =
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filePath === "<text>" ? getPlaceholderPath(cwd) : filePath;
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const { fixed, messages, output } = linter.verifyAndFix(text, configs, {
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allowInlineConfig,
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filename: filePathToVerify,
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fix,
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ruleFilter,
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stats,
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/**
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* Check if the linter should adopt a given code block or not.
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* @param {string} blockFilename The virtual filename of a code block.
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* @returns {boolean} `true` if the linter should adopt the code block.
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*/
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filterCodeBlock(blockFilename) {
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return configs.getConfig(blockFilename) !== void 0;
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},
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});
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// Tweak and return.
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const result = {
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filePath: filePath === "<text>" ? filePath : path.resolve(filePath),
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messages,
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suppressedMessages: linter.getSuppressedMessages(),
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...calculateStatsPerFile(messages),
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};
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if (fixed) {
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result.output = output;
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}
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if (
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result.errorCount + result.warningCount > 0 &&
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typeof result.output === "undefined"
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) {
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result.source = text;
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}
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if (stats) {
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result.stats = {
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times: linter.getTimes(),
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fixPasses: linter.getFixPassCount(),
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};
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}
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return result;
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}
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/**
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* Checks whether a message's rule type should be fixed.
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* @param {LintMessage} message The message to check.
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* @param {FlatConfig} config The config for the file that generated the message.
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* @param {string[]} fixTypes An array of fix types to check.
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* @returns {boolean} Whether the message should be fixed.
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*/
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function shouldMessageBeFixed(message, config, fixTypes) {
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if (!message.ruleId) {
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return fixTypes.has("directive");
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}
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const rule = message.ruleId && getRuleFromConfig(message.ruleId, config);
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return Boolean(rule && rule.meta && fixTypes.has(rule.meta.type));
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}
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/**
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* Creates an error to be thrown when an array of results passed to `getRulesMetaForResults` was not created by the current engine.
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* @returns {TypeError} An error object.
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*/
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function createExtraneousResultsError() {
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return new TypeError(
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"Results object was not created from this ESLint instance.",
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);
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}
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/**
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* Creates a fixer function based on the provided fix, fixTypesSet, and config.
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* @param {Function|boolean} fix The original fix option.
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* @param {Set<string>} fixTypesSet A set of fix types to filter messages for fixing.
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* @param {FlatConfig} config The config for the file that generated the message.
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* @returns {Function|boolean} The fixer function or the original fix value.
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*/
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function getFixerForFixTypes(fix, fixTypesSet, config) {
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if (!fix || !fixTypesSet) {
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return fix;
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}
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const originalFix = typeof fix === "function" ? fix : () => true;
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return message =>
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shouldMessageBeFixed(message, config, fixTypesSet) &&
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originalFix(message);
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}
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//-----------------------------------------------------------------------------
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// Main API
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//-----------------------------------------------------------------------------
|
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|
|
/**
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|
* Primary Node.js API for ESLint.
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|
*/
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|
class ESLint {
|
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/**
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* The type of configuration used by this class.
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* @type {string}
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*/
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static configType = "flat";
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|
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/**
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* The loader to use for finding config files.
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* @type {ConfigLoader|LegacyConfigLoader}
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*/
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#configLoader;
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|
|
/**
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|
* Creates a new instance of the main ESLint API.
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|
* @param {ESLintOptions} options The options for this instance.
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*/
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|
constructor(options = {}) {
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const defaultConfigs = [];
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const processedOptions = processOptions(options);
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const linter = new Linter({
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cwd: processedOptions.cwd,
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configType: "flat",
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flags: processedOptions.flags,
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});
|
|
|
|
const cacheFilePath = getCacheFile(
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processedOptions.cacheLocation,
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|
processedOptions.cwd,
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);
|
|
|
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const lintResultCache = processedOptions.cache
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|
? new LintResultCache(cacheFilePath, processedOptions.cacheStrategy)
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: null;
|
|
|
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const configLoaderOptions = {
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|
cwd: processedOptions.cwd,
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|
baseConfig: processedOptions.baseConfig,
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|
overrideConfig: processedOptions.overrideConfig,
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|
configFile: processedOptions.configFile,
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|
ignoreEnabled: processedOptions.ignore,
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ignorePatterns: processedOptions.ignorePatterns,
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defaultConfigs,
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};
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this.#configLoader = linter.hasFlag("unstable_config_lookup_from_file")
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? new ConfigLoader(configLoaderOptions)
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: new LegacyConfigLoader(configLoaderOptions);
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debug(`Using config loader ${this.#configLoader.constructor.name}`);
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|
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privateMembers.set(this, {
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options: processedOptions,
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linter,
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cacheFilePath,
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lintResultCache,
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defaultConfigs,
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configs: null,
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configLoader: this.#configLoader,
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});
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|
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/**
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|
* If additional plugins are passed in, add that to the default
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* configs for this instance.
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*/
|
|
if (options.plugins) {
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const plugins = {};
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|
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for (const [pluginName, plugin] of Object.entries(
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options.plugins,
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)) {
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plugins[naming.getShorthandName(pluginName, "eslint-plugin")] =
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plugin;
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}
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|
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defaultConfigs.push({
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plugins,
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});
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}
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|
|
// Check for the .eslintignore file, and warn if it's present.
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|
if (existsSync(path.resolve(processedOptions.cwd, ".eslintignore"))) {
|
|
process.emitWarning(
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'The ".eslintignore" file is no longer supported. Switch to using the "ignores" property in "eslint.config.js": https://eslint.org/docs/latest/use/configure/migration-guide#ignoring-files',
|
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"ESLintIgnoreWarning",
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);
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|
}
|
|
}
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|
|
/**
|
|
* The version text.
|
|
* @type {string}
|
|
*/
|
|
static get version() {
|
|
return version;
|
|
}
|
|
|
|
/**
|
|
* The default configuration that ESLint uses internally. This is provided for tooling that wants to calculate configurations using the same defaults as ESLint.
|
|
* Keep in mind that the default configuration may change from version to version, so you shouldn't rely on any particular keys or values to be present.
|
|
* @type {ConfigArray}
|
|
*/
|
|
static get defaultConfig() {
|
|
return defaultConfig;
|
|
}
|
|
|
|
/**
|
|
* Outputs fixes from the given results to files.
|
|
* @param {LintResult[]} results The lint results.
|
|
* @returns {Promise<void>} Returns a promise that is used to track side effects.
|
|
*/
|
|
static async outputFixes(results) {
|
|
if (!Array.isArray(results)) {
|
|
throw new Error("'results' must be an array");
|
|
}
|
|
|
|
await Promise.all(
|
|
results
|
|
.filter(result => {
|
|
if (typeof result !== "object" || result === null) {
|
|
throw new Error("'results' must include only objects");
|
|
}
|
|
return (
|
|
typeof result.output === "string" &&
|
|
path.isAbsolute(result.filePath)
|
|
);
|
|
})
|
|
.map(r => fs.writeFile(r.filePath, r.output)),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns results that only contains errors.
|
|
* @param {LintResult[]} results The results to filter.
|
|
* @returns {LintResult[]} The filtered results.
|
|
*/
|
|
static getErrorResults(results) {
|
|
const filtered = [];
|
|
|
|
results.forEach(result => {
|
|
const filteredMessages = result.messages.filter(isErrorMessage);
|
|
const filteredSuppressedMessages =
|
|
result.suppressedMessages.filter(isErrorMessage);
|
|
|
|
if (filteredMessages.length > 0) {
|
|
filtered.push({
|
|
...result,
|
|
messages: filteredMessages,
|
|
suppressedMessages: filteredSuppressedMessages,
|
|
errorCount: filteredMessages.length,
|
|
warningCount: 0,
|
|
fixableErrorCount: result.fixableErrorCount,
|
|
fixableWarningCount: 0,
|
|
});
|
|
}
|
|
});
|
|
|
|
return filtered;
|
|
}
|
|
|
|
/**
|
|
* Returns meta objects for each rule represented in the lint results.
|
|
* @param {LintResult[]} results The results to fetch rules meta for.
|
|
* @returns {Object} A mapping of ruleIds to rule meta objects.
|
|
* @throws {TypeError} When the results object wasn't created from this ESLint instance.
|
|
* @throws {TypeError} When a plugin or rule is missing.
|
|
*/
|
|
getRulesMetaForResults(results) {
|
|
// short-circuit simple case
|
|
if (results.length === 0) {
|
|
return {};
|
|
}
|
|
|
|
const resultRules = new Map();
|
|
const {
|
|
configLoader,
|
|
options: { cwd },
|
|
} = privateMembers.get(this);
|
|
|
|
for (const result of results) {
|
|
/*
|
|
* Normalize filename for <text>.
|
|
*/
|
|
const filePath =
|
|
result.filePath === "<text>"
|
|
? getPlaceholderPath(cwd)
|
|
: result.filePath;
|
|
const allMessages = result.messages.concat(
|
|
result.suppressedMessages,
|
|
);
|
|
|
|
for (const { ruleId } of allMessages) {
|
|
if (!ruleId) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* All of the plugin and rule information is contained within the
|
|
* calculated config for the given file.
|
|
*/
|
|
let configs;
|
|
|
|
try {
|
|
configs =
|
|
configLoader.getCachedConfigArrayForFile(filePath);
|
|
} catch {
|
|
throw createExtraneousResultsError();
|
|
}
|
|
|
|
const config = configs.getConfig(filePath);
|
|
|
|
if (!config) {
|
|
throw createExtraneousResultsError();
|
|
}
|
|
const rule = getRuleFromConfig(ruleId, config);
|
|
|
|
// ignore unknown rules
|
|
if (rule) {
|
|
resultRules.set(ruleId, rule);
|
|
}
|
|
}
|
|
}
|
|
|
|
return createRulesMeta(resultRules);
|
|
}
|
|
|
|
/**
|
|
* Indicates if the given feature flag is enabled for this instance.
|
|
* @param {string} flag The feature flag to check.
|
|
* @returns {boolean} `true` if the feature flag is enabled, `false` if not.
|
|
*/
|
|
hasFlag(flag) {
|
|
// note: Linter does validation of the flags
|
|
return privateMembers.get(this).linter.hasFlag(flag);
|
|
}
|
|
|
|
/**
|
|
* Executes the current configuration on an array of file and directory names.
|
|
* @param {string|string[]} patterns An array of file and directory names.
|
|
* @returns {Promise<LintResult[]>} The results of linting the file patterns given.
|
|
*/
|
|
async lintFiles(patterns) {
|
|
let normalizedPatterns = patterns;
|
|
const {
|
|
cacheFilePath,
|
|
lintResultCache,
|
|
linter,
|
|
options: eslintOptions,
|
|
} = privateMembers.get(this);
|
|
|
|
/*
|
|
* Special cases:
|
|
* 1. `patterns` is an empty string
|
|
* 2. `patterns` is an empty array
|
|
*
|
|
* In both cases, we use the cwd as the directory to lint.
|
|
*/
|
|
if (
|
|
patterns === "" ||
|
|
(Array.isArray(patterns) && patterns.length === 0)
|
|
) {
|
|
/*
|
|
* Special case: If `passOnNoPatterns` is true, then we just exit
|
|
* without doing any work.
|
|
*/
|
|
if (eslintOptions.passOnNoPatterns) {
|
|
return [];
|
|
}
|
|
|
|
normalizedPatterns = ["."];
|
|
} else {
|
|
if (
|
|
!isNonEmptyString(patterns) &&
|
|
!isArrayOfNonEmptyString(patterns)
|
|
) {
|
|
throw new Error(
|
|
"'patterns' must be a non-empty string or an array of non-empty strings",
|
|
);
|
|
}
|
|
|
|
if (typeof patterns === "string") {
|
|
normalizedPatterns = [patterns];
|
|
}
|
|
}
|
|
|
|
debug(`Using file patterns: ${normalizedPatterns}`);
|
|
|
|
const {
|
|
allowInlineConfig,
|
|
cache,
|
|
cwd,
|
|
fix,
|
|
fixTypes,
|
|
ruleFilter,
|
|
stats,
|
|
globInputPaths,
|
|
errorOnUnmatchedPattern,
|
|
warnIgnored,
|
|
} = eslintOptions;
|
|
const startTime = Date.now();
|
|
const fixTypesSet = fixTypes ? new Set(fixTypes) : null;
|
|
|
|
// Delete cache file; should this be done here?
|
|
if (!cache && cacheFilePath) {
|
|
debug(`Deleting cache file at ${cacheFilePath}`);
|
|
|
|
try {
|
|
await fs.unlink(cacheFilePath);
|
|
} catch (error) {
|
|
const errorCode = error && error.code;
|
|
|
|
// Ignore errors when no such file exists or file system is read only (and cache file does not exist)
|
|
if (
|
|
errorCode !== "ENOENT" &&
|
|
!(errorCode === "EROFS" && !existsSync(cacheFilePath))
|
|
) {
|
|
throw error;
|
|
}
|
|
}
|
|
}
|
|
|
|
const filePaths = await findFiles({
|
|
patterns: normalizedPatterns,
|
|
cwd,
|
|
globInputPaths,
|
|
configLoader: this.#configLoader,
|
|
errorOnUnmatchedPattern,
|
|
});
|
|
const controller = new AbortController();
|
|
const retryCodes = new Set(["ENFILE", "EMFILE"]);
|
|
const retrier = new Retrier(error => retryCodes.has(error.code), {
|
|
concurrency: 100,
|
|
});
|
|
|
|
debug(
|
|
`${filePaths.length} files found in: ${Date.now() - startTime}ms`,
|
|
);
|
|
|
|
/*
|
|
* Because we need to process multiple files, including reading from disk,
|
|
* it is most efficient to start by reading each file via promises so that
|
|
* they can be done in parallel. Then, we can lint the returned text. This
|
|
* ensures we are waiting the minimum amount of time in between lints.
|
|
*/
|
|
const results = await Promise.all(
|
|
filePaths.map(async filePath => {
|
|
const configs =
|
|
await this.#configLoader.loadConfigArrayForFile(filePath);
|
|
const config = configs.getConfig(filePath);
|
|
|
|
/*
|
|
* If a filename was entered that cannot be matched
|
|
* to a config, then notify the user.
|
|
*/
|
|
if (!config) {
|
|
if (warnIgnored) {
|
|
const configStatus = configs.getConfigStatus(filePath);
|
|
|
|
return createIgnoreResult(filePath, cwd, configStatus);
|
|
}
|
|
|
|
return void 0;
|
|
}
|
|
|
|
// Skip if there is cached result.
|
|
if (lintResultCache) {
|
|
const cachedResult = lintResultCache.getCachedLintResults(
|
|
filePath,
|
|
config,
|
|
);
|
|
|
|
if (cachedResult) {
|
|
const hadMessages =
|
|
cachedResult.messages &&
|
|
cachedResult.messages.length > 0;
|
|
|
|
if (hadMessages && fix) {
|
|
debug(
|
|
`Reprocessing cached file to allow autofix: ${filePath}`,
|
|
);
|
|
} else {
|
|
debug(
|
|
`Skipping file since it hasn't changed: ${filePath}`,
|
|
);
|
|
return cachedResult;
|
|
}
|
|
}
|
|
}
|
|
|
|
// set up fixer for fixTypes if necessary
|
|
const fixer = getFixerForFixTypes(fix, fixTypesSet, config);
|
|
|
|
return retrier
|
|
.retry(
|
|
() =>
|
|
fs
|
|
.readFile(filePath, {
|
|
encoding: "utf8",
|
|
signal: controller.signal,
|
|
})
|
|
.then(text => {
|
|
// fail immediately if an error occurred in another file
|
|
controller.signal.throwIfAborted();
|
|
|
|
// do the linting
|
|
const result = verifyText({
|
|
text,
|
|
filePath,
|
|
configs,
|
|
cwd,
|
|
fix: fixer,
|
|
allowInlineConfig,
|
|
ruleFilter,
|
|
stats,
|
|
linter,
|
|
});
|
|
|
|
/*
|
|
* Store the lint result in the LintResultCache.
|
|
* NOTE: The LintResultCache will remove the file source and any
|
|
* other properties that are difficult to serialize, and will
|
|
* hydrate those properties back in on future lint runs.
|
|
*/
|
|
if (lintResultCache) {
|
|
lintResultCache.setCachedLintResults(
|
|
filePath,
|
|
config,
|
|
result,
|
|
);
|
|
}
|
|
|
|
return result;
|
|
}),
|
|
{ signal: controller.signal },
|
|
)
|
|
.catch(error => {
|
|
controller.abort(error);
|
|
throw error;
|
|
});
|
|
}),
|
|
);
|
|
|
|
// Persist the cache to disk.
|
|
if (lintResultCache) {
|
|
lintResultCache.reconcile();
|
|
}
|
|
|
|
const finalResults = results.filter(result => !!result);
|
|
|
|
return processLintReport(this, {
|
|
results: finalResults,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Executes the current configuration on text.
|
|
* @param {string} code A string of JavaScript code to lint.
|
|
* @param {Object} [options] The options.
|
|
* @param {string} [options.filePath] The path to the file of the source code.
|
|
* @param {boolean} [options.warnIgnored] When set to true, warn if given filePath is an ignored path.
|
|
* @returns {Promise<LintResult[]>} The results of linting the string of code given.
|
|
*/
|
|
async lintText(code, options = {}) {
|
|
// Parameter validation
|
|
|
|
if (typeof code !== "string") {
|
|
throw new Error("'code' must be a string");
|
|
}
|
|
|
|
if (typeof options !== "object") {
|
|
throw new Error("'options' must be an object, null, or undefined");
|
|
}
|
|
|
|
// Options validation
|
|
|
|
const { filePath, warnIgnored, ...unknownOptions } = options || {};
|
|
|
|
const unknownOptionKeys = Object.keys(unknownOptions);
|
|
|
|
if (unknownOptionKeys.length > 0) {
|
|
throw new Error(
|
|
`'options' must not include the unknown option(s): ${unknownOptionKeys.join(", ")}`,
|
|
);
|
|
}
|
|
|
|
if (filePath !== void 0 && !isNonEmptyString(filePath)) {
|
|
throw new Error(
|
|
"'options.filePath' must be a non-empty string or undefined",
|
|
);
|
|
}
|
|
|
|
if (
|
|
typeof warnIgnored !== "boolean" &&
|
|
typeof warnIgnored !== "undefined"
|
|
) {
|
|
throw new Error(
|
|
"'options.warnIgnored' must be a boolean or undefined",
|
|
);
|
|
}
|
|
|
|
// Now we can get down to linting
|
|
|
|
const { linter, options: eslintOptions } = privateMembers.get(this);
|
|
const {
|
|
allowInlineConfig,
|
|
cwd,
|
|
fix,
|
|
fixTypes,
|
|
warnIgnored: constructorWarnIgnored,
|
|
ruleFilter,
|
|
stats,
|
|
} = eslintOptions;
|
|
const results = [];
|
|
const startTime = Date.now();
|
|
const fixTypesSet = fixTypes ? new Set(fixTypes) : null;
|
|
const resolvedFilename = path.resolve(
|
|
cwd,
|
|
filePath || "__placeholder__.js",
|
|
);
|
|
const configs =
|
|
await this.#configLoader.loadConfigArrayForFile(resolvedFilename);
|
|
const configStatus =
|
|
configs?.getConfigStatus(resolvedFilename) ?? "unconfigured";
|
|
|
|
// Clear the last used config arrays.
|
|
if (resolvedFilename && configStatus !== "matched") {
|
|
const shouldWarnIgnored =
|
|
typeof warnIgnored === "boolean"
|
|
? warnIgnored
|
|
: constructorWarnIgnored;
|
|
|
|
if (shouldWarnIgnored) {
|
|
results.push(
|
|
createIgnoreResult(resolvedFilename, cwd, configStatus),
|
|
);
|
|
}
|
|
} else {
|
|
const config = configs.getConfig(resolvedFilename);
|
|
const fixer = getFixerForFixTypes(fix, fixTypesSet, config);
|
|
|
|
// Do lint.
|
|
results.push(
|
|
verifyText({
|
|
text: code,
|
|
filePath: resolvedFilename.endsWith("__placeholder__.js")
|
|
? "<text>"
|
|
: resolvedFilename,
|
|
configs,
|
|
cwd,
|
|
fix: fixer,
|
|
allowInlineConfig,
|
|
ruleFilter,
|
|
stats,
|
|
linter,
|
|
}),
|
|
);
|
|
}
|
|
|
|
debug(`Linting complete in: ${Date.now() - startTime}ms`);
|
|
|
|
return processLintReport(this, {
|
|
results,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Returns the formatter representing the given formatter name.
|
|
* @param {string} [name] The name of the formatter to load.
|
|
* The following values are allowed:
|
|
* - `undefined` ... Load `stylish` builtin formatter.
|
|
* - A builtin formatter name ... Load the builtin formatter.
|
|
* - A third-party formatter name:
|
|
* - `foo` → `eslint-formatter-foo`
|
|
* - `@foo` → `@foo/eslint-formatter`
|
|
* - `@foo/bar` → `@foo/eslint-formatter-bar`
|
|
* - A file path ... Load the file.
|
|
* @returns {Promise<Formatter>} A promise resolving to the formatter object.
|
|
* This promise will be rejected if the given formatter was not found or not
|
|
* a function.
|
|
*/
|
|
async loadFormatter(name = "stylish") {
|
|
if (typeof name !== "string") {
|
|
throw new Error("'name' must be a string");
|
|
}
|
|
|
|
// replace \ with / for Windows compatibility
|
|
const normalizedFormatName = name.replace(/\\/gu, "/");
|
|
const namespace = naming.getNamespaceFromTerm(normalizedFormatName);
|
|
|
|
// grab our options
|
|
const { cwd } = privateMembers.get(this).options;
|
|
|
|
let formatterPath;
|
|
|
|
// if there's a slash, then it's a file (TODO: this check seems dubious for scoped npm packages)
|
|
if (!namespace && normalizedFormatName.includes("/")) {
|
|
formatterPath = path.resolve(cwd, normalizedFormatName);
|
|
} else {
|
|
try {
|
|
const npmFormat = naming.normalizePackageName(
|
|
normalizedFormatName,
|
|
"eslint-formatter",
|
|
);
|
|
|
|
// TODO: This is pretty dirty...would be nice to clean up at some point.
|
|
formatterPath = ModuleResolver.resolve(
|
|
npmFormat,
|
|
getPlaceholderPath(cwd),
|
|
);
|
|
} catch {
|
|
formatterPath = path.resolve(
|
|
__dirname,
|
|
"../",
|
|
"cli-engine",
|
|
"formatters",
|
|
`${normalizedFormatName}.js`,
|
|
);
|
|
}
|
|
}
|
|
|
|
let formatter;
|
|
|
|
try {
|
|
formatter = (await import(pathToFileURL(formatterPath))).default;
|
|
} catch (ex) {
|
|
// check for formatters that have been removed
|
|
if (removedFormatters.has(name)) {
|
|
ex.message = `The ${name} formatter is no longer part of core ESLint. Install it manually with \`npm install -D eslint-formatter-${name}\``;
|
|
} else {
|
|
ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
|
|
}
|
|
|
|
throw ex;
|
|
}
|
|
|
|
if (typeof formatter !== "function") {
|
|
throw new TypeError(
|
|
`Formatter must be a function, but got a ${typeof formatter}.`,
|
|
);
|
|
}
|
|
|
|
const eslint = this;
|
|
|
|
return {
|
|
/**
|
|
* The main formatter method.
|
|
* @param {LintResult[]} results The lint results to format.
|
|
* @param {ResultsMeta} resultsMeta Warning count and max threshold.
|
|
* @returns {string} The formatted lint results.
|
|
*/
|
|
format(results, resultsMeta) {
|
|
let rulesMeta = null;
|
|
|
|
results.sort(compareResultsByFilePath);
|
|
|
|
return formatter(results, {
|
|
...resultsMeta,
|
|
cwd,
|
|
get rulesMeta() {
|
|
if (!rulesMeta) {
|
|
rulesMeta = eslint.getRulesMetaForResults(results);
|
|
}
|
|
|
|
return rulesMeta;
|
|
},
|
|
});
|
|
},
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Returns a configuration object for the given file based on the CLI options.
|
|
* This is the same logic used by the ESLint CLI executable to determine
|
|
* configuration for each file it processes.
|
|
* @param {string} filePath The path of the file to retrieve a config object for.
|
|
* @returns {Promise<ConfigData|undefined>} A configuration object for the file
|
|
* or `undefined` if there is no configuration data for the object.
|
|
*/
|
|
async calculateConfigForFile(filePath) {
|
|
if (!isNonEmptyString(filePath)) {
|
|
throw new Error("'filePath' must be a non-empty string");
|
|
}
|
|
const options = privateMembers.get(this).options;
|
|
const absolutePath = path.resolve(options.cwd, filePath);
|
|
const configs =
|
|
await this.#configLoader.loadConfigArrayForFile(absolutePath);
|
|
|
|
if (!configs) {
|
|
const error = new Error("Could not find config file.");
|
|
|
|
error.messageTemplate = "config-file-missing";
|
|
throw error;
|
|
}
|
|
|
|
return configs.getConfig(absolutePath);
|
|
}
|
|
|
|
/**
|
|
* Finds the config file being used by this instance based on the options
|
|
* passed to the constructor.
|
|
* @param {string} [filePath] The path of the file to find the config file for.
|
|
* @returns {Promise<string|undefined>} The path to the config file being used or
|
|
* `undefined` if no config file is being used.
|
|
*/
|
|
findConfigFile(filePath) {
|
|
const options = privateMembers.get(this).options;
|
|
|
|
/*
|
|
* Because the new config lookup scheme skips the current directory
|
|
* and looks into the parent directories, we need to use a placeholder
|
|
* directory to ensure the file in cwd is checked.
|
|
*/
|
|
const fakeCwd = path.join(options.cwd, "__placeholder__");
|
|
|
|
return this.#configLoader
|
|
.findConfigFileForPath(filePath ?? fakeCwd)
|
|
.catch(() => void 0);
|
|
}
|
|
|
|
/**
|
|
* Checks if a given path is ignored by ESLint.
|
|
* @param {string} filePath The path of the file to check.
|
|
* @returns {Promise<boolean>} Whether or not the given path is ignored.
|
|
*/
|
|
async isPathIgnored(filePath) {
|
|
const config = await this.calculateConfigForFile(filePath);
|
|
|
|
return config === void 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns whether flat config should be used.
|
|
* @returns {Promise<boolean>} Whether flat config should be used.
|
|
*/
|
|
async function shouldUseFlatConfig() {
|
|
return process.env.ESLINT_USE_FLAT_CONFIG !== "false";
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Public Interface
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
ESLint,
|
|
shouldUseFlatConfig,
|
|
locateConfigFileToUse,
|
|
};
|