2 * @fileoverview Main CLI object.
3 * @author Nicholas C. Zakas
9 * The CLI object should *not* call process.exit() directly. It should only return
10 * exit codes. This allows other programs to use the CLI object and still control
11 * when the program exits.
14 //------------------------------------------------------------------------------
16 //------------------------------------------------------------------------------
18 const fs = require("fs");
19 const path = require("path");
20 const defaultOptions = require("../../conf/default-cli-options");
21 const pkg = require("../../package.json");
28 CascadingConfigArrayFactory,
30 getUsedExtractedConfigs,
33 } = require("@eslint/eslintrc");
35 const { FileEnumerator } = require("./file-enumerator");
37 const { Linter } = require("../linter");
38 const builtInRules = require("../rules");
39 const loadRules = require("./load-rules");
40 const hash = require("./hash");
41 const LintResultCache = require("./lint-result-cache");
43 const debug = require("debug")("eslint:cli-engine");
44 const validFixTypes = new Set(["problem", "suggestion", "layout"]);
46 //------------------------------------------------------------------------------
48 //------------------------------------------------------------------------------
50 // For VSCode IntelliSense
51 /** @typedef {import("../shared/types").ConfigData} ConfigData */
52 /** @typedef {import("../shared/types").DeprecatedRuleInfo} DeprecatedRuleInfo */
53 /** @typedef {import("../shared/types").LintMessage} LintMessage */
54 /** @typedef {import("../shared/types").ParserOptions} ParserOptions */
55 /** @typedef {import("../shared/types").Plugin} Plugin */
56 /** @typedef {import("../shared/types").RuleConf} RuleConf */
57 /** @typedef {import("../shared/types").Rule} Rule */
58 /** @typedef {ReturnType<CascadingConfigArrayFactory["getConfigArrayForFile"]>} ConfigArray */
59 /** @typedef {ReturnType<ConfigArray["extractConfig"]>} ExtractedConfig */
62 * The options to configure a CLI engine with.
63 * @typedef {Object} CLIEngineOptions
64 * @property {boolean} [allowInlineConfig] Enable or disable inline configuration comments.
65 * @property {ConfigData} [baseConfig] Base config object, extended by all configs used with this CLIEngine instance
66 * @property {boolean} [cache] Enable result caching.
67 * @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
68 * @property {string} [configFile] The configuration file to use.
69 * @property {string} [cwd] The value to use for the current working directory.
70 * @property {string[]} [envs] An array of environments to load.
71 * @property {string[]|null} [extensions] An array of file extensions to check.
72 * @property {boolean|Function} [fix] Execute in autofix mode. If a function, should return a boolean.
73 * @property {string[]} [fixTypes] Array of rule types to apply fixes for.
74 * @property {string[]} [globals] An array of global variables to declare.
75 * @property {boolean} [ignore] False disables use of .eslintignore.
76 * @property {string} [ignorePath] The ignore file to use instead of .eslintignore.
77 * @property {string|string[]} [ignorePattern] One or more glob patterns to ignore.
78 * @property {boolean} [useEslintrc] False disables looking for .eslintrc
79 * @property {string} [parser] The name of the parser to use.
80 * @property {ParserOptions} [parserOptions] An object of parserOption settings to use.
81 * @property {string[]} [plugins] An array of plugins to load.
82 * @property {Record<string,RuleConf>} [rules] An object of rules to use.
83 * @property {string[]} [rulePaths] An array of directories to load custom rules from.
84 * @property {boolean} [reportUnusedDisableDirectives] `true` adds reports for unused eslint-disable directives
85 * @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.
86 * @property {string} [resolvePluginsRelativeTo] The folder where plugins should be resolved from, defaulting to the CWD
91 * @typedef {Object} LintResult
92 * @property {string} filePath The path to the file that was linted.
93 * @property {LintMessage[]} messages All of the messages for the result.
94 * @property {number} errorCount Number of errors for the result.
95 * @property {number} warningCount Number of warnings for the result.
96 * @property {number} fixableErrorCount Number of fixable errors for the result.
97 * @property {number} fixableWarningCount Number of fixable warnings for the result.
98 * @property {string} [source] The source code of the file that was linted.
99 * @property {string} [output] The source code of the file that was linted, with as many fixes applied as possible.
104 * @typedef {Object} LintReport
105 * @property {LintResult[]} results All of the result.
106 * @property {number} errorCount Number of errors for the result.
107 * @property {number} warningCount Number of warnings for the result.
108 * @property {number} fixableErrorCount Number of fixable errors for the result.
109 * @property {number} fixableWarningCount Number of fixable warnings for the result.
110 * @property {DeprecatedRuleInfo[]} usedDeprecatedRules The list of used deprecated rules.
114 * Private data for CLIEngine.
115 * @typedef {Object} CLIEngineInternalSlots
116 * @property {Map<string, Plugin>} additionalPluginPool The map for additional plugins.
117 * @property {string} cacheFilePath The path to the cache of lint results.
118 * @property {CascadingConfigArrayFactory} configArrayFactory The factory of configs.
119 * @property {(filePath: string) => boolean} defaultIgnores The default predicate function to check if a file ignored or not.
120 * @property {FileEnumerator} fileEnumerator The file enumerator.
121 * @property {ConfigArray[]} lastConfigArrays The list of config arrays that the last `executeOnFiles` or `executeOnText` used.
122 * @property {LintResultCache|null} lintResultCache The cache of lint results.
123 * @property {Linter} linter The linter instance which has loaded rules.
124 * @property {CLIEngineOptions} options The normalized options of this instance.
127 //------------------------------------------------------------------------------
129 //------------------------------------------------------------------------------
131 /** @type {WeakMap<CLIEngine, CLIEngineInternalSlots>} */
132 const internalSlotsMap = new WeakMap();
135 * Determines if each fix type in an array is supported by ESLint and throws
137 * @param {string[]} fixTypes An array of fix types to check.
139 * @throws {Error} If an invalid fix type is found.
141 function validateFixTypes(fixTypes) {
142 for (const fixType of fixTypes) {
143 if (!validFixTypes.has(fixType)) {
144 throw new Error(`Invalid fix type "${fixType}" found.`);
150 * It will calculate the error and warning count for collection of messages per file
151 * @param {LintMessage[]} messages Collection of messages
152 * @returns {Object} Contains the stats
155 function calculateStatsPerFile(messages) {
156 return messages.reduce((stat, message) => {
157 if (message.fatal || message.severity === 2) {
160 stat.fatalErrorCount++;
163 stat.fixableErrorCount++;
168 stat.fixableWarningCount++;
176 fixableErrorCount: 0,
177 fixableWarningCount: 0
182 * It will calculate the error and warning count for collection of results from all files
183 * @param {LintResult[]} results Collection of messages from all the files
184 * @returns {Object} Contains the stats
187 function calculateStatsPerRun(results) {
188 return results.reduce((stat, result) => {
189 stat.errorCount += result.errorCount;
190 stat.fatalErrorCount += result.fatalErrorCount;
191 stat.warningCount += result.warningCount;
192 stat.fixableErrorCount += result.fixableErrorCount;
193 stat.fixableWarningCount += result.fixableWarningCount;
199 fixableErrorCount: 0,
200 fixableWarningCount: 0
205 * Processes an source code using ESLint.
206 * @param {Object} config The config object.
207 * @param {string} config.text The source code to verify.
208 * @param {string} config.cwd The path to the current working directory.
209 * @param {string|undefined} config.filePath The path to the file of `text`. If this is undefined, it uses `<text>`.
210 * @param {ConfigArray} config.config The config.
211 * @param {boolean} config.fix If `true` then it does fix.
212 * @param {boolean} config.allowInlineConfig If `true` then it uses directive comments.
213 * @param {boolean} config.reportUnusedDisableDirectives If `true` then it reports unused `eslint-disable` comments.
214 * @param {FileEnumerator} config.fileEnumerator The file enumerator to check if a path is a target or not.
215 * @param {Linter} config.linter The linter instance to verify.
216 * @returns {LintResult} The result of linting.
219 function verifyText({
222 filePath: providedFilePath,
226 reportUnusedDisableDirectives,
230 const filePath = providedFilePath || "<text>";
232 debug(`Lint ${filePath}`);
236 * `config.extractConfig(filePath)` requires an absolute path, but `linter`
237 * doesn't know CWD, so it gives `linter` an absolute path always.
239 const filePathToVerify = filePath === "<text>" ? path.join(cwd, filePath) : filePath;
240 const { fixed, messages, output } = linter.verifyAndFix(
245 filename: filePathToVerify,
247 reportUnusedDisableDirectives,
250 * Check if the linter should adopt a given code block or not.
251 * @param {string} blockFilename The virtual filename of a code block.
252 * @returns {boolean} `true` if the linter should adopt the code block.
254 filterCodeBlock(blockFilename) {
255 return fileEnumerator.isTargetPath(blockFilename);
264 ...calculateStatsPerFile(messages)
268 result.output = output;
271 result.errorCount + result.warningCount > 0 &&
272 typeof result.output === "undefined"
274 result.source = text;
281 * Returns result with warning by ignore settings
282 * @param {string} filePath File path of checked code
283 * @param {string} baseDir Absolute path of base directory
284 * @returns {LintResult} Result with single warning
287 function createIgnoreResult(filePath, baseDir) {
289 const isHidden = filePath.split(path.sep)
290 .find(segment => /^\./u.test(segment));
291 const isInNodeModules = baseDir && path.relative(baseDir, filePath).startsWith("node_modules");
294 message = "File ignored by default. Use a negated ignore pattern (like \"--ignore-pattern '!<relative/path/to/filename>'\") to override.";
295 } else if (isInNodeModules) {
296 message = "File ignored by default. Use \"--ignore-pattern '!node_modules/*'\" to override.";
298 message = "File ignored because of a matching ignore pattern. Use \"--no-ignore\" to override.";
302 filePath: path.resolve(filePath),
312 fixableErrorCount: 0,
313 fixableWarningCount: 0
319 * @param {string} ruleId The rule ID to get.
320 * @param {ConfigArray[]} configArrays The config arrays that have plugin rules.
321 * @returns {Rule|null} The rule or null.
323 function getRule(ruleId, configArrays) {
324 for (const configArray of configArrays) {
325 const rule = configArray.pluginRules.get(ruleId);
331 return builtInRules.get(ruleId) || null;
335 * Collect used deprecated rules.
336 * @param {ConfigArray[]} usedConfigArrays The config arrays which were used.
337 * @returns {IterableIterator<DeprecatedRuleInfo>} Used deprecated rules.
339 function *iterateRuleDeprecationWarnings(usedConfigArrays) {
340 const processedRuleIds = new Set();
342 // Flatten used configs.
343 /** @type {ExtractedConfig[]} */
344 const configs = [].concat(
345 ...usedConfigArrays.map(getUsedExtractedConfigs)
348 // Traverse rule configs.
349 for (const config of configs) {
350 for (const [ruleId, ruleConfig] of Object.entries(config.rules)) {
352 // Skip if it was processed.
353 if (processedRuleIds.has(ruleId)) {
356 processedRuleIds.add(ruleId);
358 // Skip if it's not used.
359 if (!ConfigOps.getRuleSeverity(ruleConfig)) {
362 const rule = getRule(ruleId, usedConfigArrays);
364 // Skip if it's not deprecated.
365 if (!(rule && rule.meta && rule.meta.deprecated)) {
369 // This rule was used and deprecated.
372 replacedBy: rule.meta.replacedBy || []
379 * Checks if the given message is an error message.
380 * @param {LintMessage} message The message to check.
381 * @returns {boolean} Whether or not the message is an error message.
384 function isErrorMessage(message) {
385 return message.severity === 2;
390 * return the cacheFile to be used by eslint, based on whether the provided parameter is
391 * a directory or looks like a directory (ends in `path.sep`), in which case the file
392 * name will be the `cacheFile/.cache_hashOfCWD`
394 * if cacheFile points to a file or looks like a file then in will just use that file
395 * @param {string} cacheFile The name of file to be used to store the cache
396 * @param {string} cwd Current working directory
397 * @returns {string} the resolved path to the cache file
399 function getCacheFile(cacheFile, cwd) {
402 * make sure the path separators are normalized for the environment/os
403 * keeping the trailing path separator if present
405 const normalizedCacheFile = path.normalize(cacheFile);
407 const resolvedCacheFile = path.resolve(cwd, normalizedCacheFile);
408 const looksLikeADirectory = normalizedCacheFile.slice(-1) === path.sep;
411 * return the name for the cache file in case the provided parameter is a directory
412 * @returns {string} the resolved path to the cacheFile
414 function getCacheFileForDirectory() {
415 return path.join(resolvedCacheFile, `.cache_${hash(cwd)}`);
421 fileStats = fs.lstatSync(resolvedCacheFile);
428 * in case the file exists we need to verify if the provided path
429 * is a directory or a file. If it is a directory we want to create a file
430 * inside that directory
435 * is a directory or is a file, but the original file the user provided
436 * looks like a directory but `path.resolve` removed the `last path.sep`
437 * so we need to still treat this like a directory
439 if (fileStats.isDirectory() || looksLikeADirectory) {
440 return getCacheFileForDirectory();
443 // is file so just use that file
444 return resolvedCacheFile;
448 * here we known the file or directory doesn't exist,
449 * so we will try to infer if its a directory if it looks like a directory
450 * for the current operating system.
453 // if the last character passed is a path separator we assume is a directory
454 if (looksLikeADirectory) {
455 return getCacheFileForDirectory();
458 return resolvedCacheFile;
462 * Convert a string array to a boolean map.
463 * @param {string[]|null} keys The keys to assign true.
464 * @param {boolean} defaultValue The default value for each property.
465 * @param {string} displayName The property name which is used in error message.
466 * @returns {Record<string,boolean>} The boolean map.
468 function toBooleanMap(keys, defaultValue, displayName) {
469 if (keys && !Array.isArray(keys)) {
470 throw new Error(`${displayName} must be an array.`);
472 if (keys && keys.length > 0) {
473 return keys.reduce((map, def) => {
474 const [key, value] = def.split(":");
476 if (key !== "__proto__") {
477 map[key] = value === void 0
489 * Create a config data from CLI options.
490 * @param {CLIEngineOptions} options The options
491 * @returns {ConfigData|null} The created config data.
493 function createConfigDataFromOptions(options) {
501 const env = toBooleanMap(options.envs, true, "envs");
502 const globals = toBooleanMap(options.globals, false, "globals");
506 globals === void 0 &&
507 (ignorePattern === void 0 || ignorePattern.length === 0) &&
509 parserOptions === void 0 &&
510 plugins === void 0 &&
518 ignorePatterns: ignorePattern,
527 * Checks whether a directory exists at the given location
528 * @param {string} resolvedPath A path from the CWD
529 * @returns {boolean} `true` if a directory exists
531 function directoryExists(resolvedPath) {
533 return fs.statSync(resolvedPath).isDirectory();
535 if (error && (error.code === "ENOENT" || error.code === "ENOTDIR")) {
542 //------------------------------------------------------------------------------
544 //------------------------------------------------------------------------------
549 * Creates a new instance of the core CLI engine.
550 * @param {CLIEngineOptions} providedOptions The options for this instance.
552 constructor(providedOptions) {
553 const options = Object.assign(
556 { cwd: process.cwd() },
560 if (options.fix === void 0) {
564 const additionalPluginPool = new Map();
565 const cacheFilePath = getCacheFile(
566 options.cacheLocation || options.cacheFile,
569 const configArrayFactory = new CascadingConfigArrayFactory({
570 additionalPluginPool,
571 baseConfig: options.baseConfig || null,
572 cliConfig: createConfigDataFromOptions(options),
574 ignorePath: options.ignorePath,
575 resolvePluginsRelativeTo: options.resolvePluginsRelativeTo,
576 rulePaths: options.rulePaths,
577 specificConfigPath: options.configFile,
578 useEslintrc: options.useEslintrc,
581 eslintRecommendedPath: path.resolve(__dirname, "../../conf/eslint-recommended.js"),
582 eslintAllPath: path.resolve(__dirname, "../../conf/eslint-all.js")
584 const fileEnumerator = new FileEnumerator({
587 extensions: options.extensions,
588 globInputPaths: options.globInputPaths,
589 errorOnUnmatchedPattern: options.errorOnUnmatchedPattern,
590 ignore: options.ignore
592 const lintResultCache =
593 options.cache ? new LintResultCache(cacheFilePath, options.cacheStrategy) : null;
594 const linter = new Linter({ cwd: options.cwd });
596 /** @type {ConfigArray[]} */
597 const lastConfigArrays = [configArrayFactory.getConfigArrayForFile()];
599 // Store private data.
600 internalSlotsMap.set(this, {
601 additionalPluginPool,
604 defaultIgnores: IgnorePattern.createDefaultIgnore(options.cwd),
612 // setup special filter for fixes
613 if (options.fix && options.fixTypes && options.fixTypes.length > 0) {
614 debug(`Using fix types ${options.fixTypes}`);
616 // throw an error if any invalid fix types are found
617 validateFixTypes(options.fixTypes);
619 // convert to Set for faster lookup
620 const fixTypes = new Set(options.fixTypes);
622 // save original value of options.fix in case it's a function
623 const originalFix = (typeof options.fix === "function")
624 ? options.fix : () => true;
626 options.fix = message => {
627 const rule = message.ruleId && getRule(message.ruleId, lastConfigArrays);
628 const matches = rule && rule.meta && fixTypes.has(rule.meta.type);
630 return matches && originalFix(message);
636 const { lastConfigArrays } = internalSlotsMap.get(this);
638 return new Map(function *() {
641 for (const configArray of lastConfigArrays) {
642 yield* configArray.pluginRules;
648 * Returns results that only contains errors.
649 * @param {LintResult[]} results The results to filter.
650 * @returns {LintResult[]} The filtered results.
652 static getErrorResults(results) {
655 results.forEach(result => {
656 const filteredMessages = result.messages.filter(isErrorMessage);
658 if (filteredMessages.length > 0) {
661 messages: filteredMessages,
662 errorCount: filteredMessages.length,
664 fixableErrorCount: result.fixableErrorCount,
665 fixableWarningCount: 0
674 * Outputs fixes from the given results to files.
675 * @param {LintReport} report The report object created by CLIEngine.
678 static outputFixes(report) {
679 report.results.filter(result => Object.prototype.hasOwnProperty.call(result, "output")).forEach(result => {
680 fs.writeFileSync(result.filePath, result.output);
686 * Add a plugin by passing its configuration
687 * @param {string} name Name of the plugin.
688 * @param {Plugin} pluginObject Plugin configuration object.
691 addPlugin(name, pluginObject) {
693 additionalPluginPool,
696 } = internalSlotsMap.get(this);
698 additionalPluginPool.set(name, pluginObject);
699 configArrayFactory.clearCache();
700 lastConfigArrays.length = 1;
701 lastConfigArrays[0] = configArrayFactory.getConfigArrayForFile();
705 * Resolves the patterns passed into executeOnFiles() into glob-based patterns
706 * for easier handling.
707 * @param {string[]} patterns The file patterns passed on the command line.
708 * @returns {string[]} The equivalent glob patterns.
710 resolveFileGlobPatterns(patterns) {
711 const { options } = internalSlotsMap.get(this);
713 if (options.globInputPaths === false) {
714 return patterns.filter(Boolean);
717 const extensions = (options.extensions || [".js"]).map(ext => ext.replace(/^\./u, ""));
718 const dirSuffix = `/**/*.{${extensions.join(",")}}`;
720 return patterns.filter(Boolean).map(pathname => {
721 const resolvedPath = path.resolve(options.cwd, pathname);
722 const newPath = directoryExists(resolvedPath)
723 ? pathname.replace(/[/\\]$/u, "") + dirSuffix
726 return path.normalize(newPath).replace(/\\/gu, "/");
731 * Executes the current configuration on an array of file and directory names.
732 * @param {string[]} patterns An array of file and directory names.
733 * @returns {LintReport} The results for all files that were linted.
735 executeOnFiles(patterns) {
747 reportUnusedDisableDirectives
749 } = internalSlotsMap.get(this);
751 const startTime = Date.now();
753 // Clear the last used config arrays.
754 lastConfigArrays.length = 0;
756 // Delete cache file; should this do here?
759 fs.unlinkSync(cacheFilePath);
761 const errorCode = error && error.code;
763 // Ignore errors when no such file exists or file system is read only (and cache file does not exist)
764 if (errorCode !== "ENOENT" && !(errorCode === "EROFS" && !fs.existsSync(cacheFilePath))) {
770 // Iterate source code files.
771 for (const { config, filePath, ignored } of fileEnumerator.iterateFiles(patterns)) {
773 results.push(createIgnoreResult(filePath, cwd));
778 * Store used configs for:
779 * - this method uses to collect used deprecated rules.
780 * - `getRules()` method uses to collect all loaded rules.
781 * - `--fix-type` option uses to get the loaded rule's meta data.
783 if (!lastConfigArrays.includes(config)) {
784 lastConfigArrays.push(config);
787 // Skip if there is cached result.
788 if (lintResultCache) {
790 lintResultCache.getCachedLintResults(filePath, config);
794 cachedResult.messages &&
795 cachedResult.messages.length > 0;
797 if (hadMessages && fix) {
798 debug(`Reprocessing cached file to allow autofix: ${filePath}`);
800 debug(`Skipping file since it hasn't changed: ${filePath}`);
801 results.push(cachedResult);
808 const result = verifyText({
809 text: fs.readFileSync(filePath, "utf8"),
815 reportUnusedDisableDirectives,
820 results.push(result);
823 * Store the lint result in the LintResultCache.
824 * NOTE: The LintResultCache will remove the file source and any
825 * other properties that are difficult to serialize, and will
826 * hydrate those properties back in on future lint runs.
828 if (lintResultCache) {
829 lintResultCache.setCachedLintResults(filePath, config, result);
833 // Persist the cache to disk.
834 if (lintResultCache) {
835 lintResultCache.reconcile();
838 debug(`Linting complete in: ${Date.now() - startTime}ms`);
839 let usedDeprecatedRules;
843 ...calculateStatsPerRun(results),
845 // Initialize it lazily because CLI and `ESLint` API don't use it.
846 get usedDeprecatedRules() {
847 if (!usedDeprecatedRules) {
848 usedDeprecatedRules = Array.from(
849 iterateRuleDeprecationWarnings(lastConfigArrays)
852 return usedDeprecatedRules;
858 * Executes the current configuration on text.
859 * @param {string} text A string of JavaScript code to lint.
860 * @param {string} [filename] An optional string representing the texts filename.
861 * @param {boolean} [warnIgnored] Always warn when a file is ignored
862 * @returns {LintReport} The results for the linting.
864 executeOnText(text, filename, warnIgnored) {
874 reportUnusedDisableDirectives
876 } = internalSlotsMap.get(this);
878 const startTime = Date.now();
879 const resolvedFilename = filename && path.resolve(cwd, filename);
882 // Clear the last used config arrays.
883 lastConfigArrays.length = 0;
884 if (resolvedFilename && this.isPathIgnored(resolvedFilename)) {
886 results.push(createIgnoreResult(resolvedFilename, cwd));
889 const config = configArrayFactory.getConfigArrayForFile(
890 resolvedFilename || "__placeholder__.js"
894 * Store used configs for:
895 * - this method uses to collect used deprecated rules.
896 * - `getRules()` method uses to collect all loaded rules.
897 * - `--fix-type` option uses to get the loaded rule's meta data.
899 lastConfigArrays.push(config);
902 results.push(verifyText({
904 filePath: resolvedFilename,
909 reportUnusedDisableDirectives,
915 debug(`Linting complete in: ${Date.now() - startTime}ms`);
916 let usedDeprecatedRules;
920 ...calculateStatsPerRun(results),
922 // Initialize it lazily because CLI and `ESLint` API don't use it.
923 get usedDeprecatedRules() {
924 if (!usedDeprecatedRules) {
925 usedDeprecatedRules = Array.from(
926 iterateRuleDeprecationWarnings(lastConfigArrays)
929 return usedDeprecatedRules;
935 * Returns a configuration object for the given file based on the CLI options.
936 * This is the same logic used by the ESLint CLI executable to determine
937 * configuration for each file it processes.
938 * @param {string} filePath The path of the file to retrieve a config object for.
939 * @returns {ConfigData} A configuration object for the file.
941 getConfigForFile(filePath) {
942 const { configArrayFactory, options } = internalSlotsMap.get(this);
943 const absolutePath = path.resolve(options.cwd, filePath);
945 if (directoryExists(absolutePath)) {
947 new Error("'filePath' should not be a directory path."),
948 { messageTemplate: "print-config-with-directory-path" }
952 return configArrayFactory
953 .getConfigArrayForFile(absolutePath)
954 .extractConfig(absolutePath)
955 .toCompatibleObjectAsConfigFileContent();
959 * Checks if a given path is ignored by ESLint.
960 * @param {string} filePath The path of the file to check.
961 * @returns {boolean} Whether or not the given path is ignored.
963 isPathIgnored(filePath) {
967 options: { cwd, ignore }
968 } = internalSlotsMap.get(this);
969 const absolutePath = path.resolve(cwd, filePath);
972 const config = configArrayFactory
973 .getConfigArrayForFile(absolutePath)
974 .extractConfig(absolutePath);
975 const ignores = config.ignores || defaultIgnores;
977 return ignores(absolutePath);
980 return defaultIgnores(absolutePath);
984 * Returns the formatter representing the given format or null if the `format` is not a string.
985 * @param {string} [format] The name of the format to load or the path to a
987 * @returns {(Function|null)} The formatter function or null if the `format` is not a string.
989 getFormatter(format) {
991 // default is stylish
992 const resolvedFormatName = format || "stylish";
994 // only strings are valid formatters
995 if (typeof resolvedFormatName === "string") {
997 // replace \ with / for Windows compatibility
998 const normalizedFormatName = resolvedFormatName.replace(/\\/gu, "/");
1000 const slots = internalSlotsMap.get(this);
1001 const cwd = slots ? slots.options.cwd : process.cwd();
1002 const namespace = naming.getNamespaceFromTerm(normalizedFormatName);
1006 // if there's a slash, then it's a file (TODO: this check seems dubious for scoped npm packages)
1007 if (!namespace && normalizedFormatName.indexOf("/") > -1) {
1008 formatterPath = path.resolve(cwd, normalizedFormatName);
1011 const npmFormat = naming.normalizePackageName(normalizedFormatName, "eslint-formatter");
1013 formatterPath = ModuleResolver.resolve(npmFormat, path.join(cwd, "__placeholder__.js"));
1015 formatterPath = path.resolve(__dirname, "formatters", normalizedFormatName);
1020 return require(formatterPath);
1022 ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
1032 CLIEngine.version = pkg.version;
1033 CLIEngine.getFormatter = CLIEngine.prototype.getFormatter;
1039 * Get the internal slots of a given CLIEngine instance for tests.
1040 * @param {CLIEngine} instance The CLIEngine instance to get.
1041 * @returns {CLIEngineInternalSlots} The internal slots.
1043 getCLIEngineInternalSlots(instance) {
1044 return internalSlotsMap.get(instance);