548 lines
19 KiB
JavaScript
548 lines
19 KiB
JavaScript
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/**
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* @fileoverview `FileEnumerator` class.
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*
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* `FileEnumerator` class has two responsibilities:
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*
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* 1. Find target files by processing glob patterns.
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* 2. Tie each target file and appropriate configuration.
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*
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* It provides a method:
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*
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* - `iterateFiles(patterns)`
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* Iterate files which are matched by given patterns together with the
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* corresponded configuration. This is for `CLIEngine#executeOnFiles()`.
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* While iterating files, it loads the configuration file of each directory
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* before iterate files on the directory, so we can use the configuration
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* files to determine target files.
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*
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* @example
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* const enumerator = new FileEnumerator();
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* const linter = new Linter();
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*
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* for (const { config, filePath } of enumerator.iterateFiles(["*.js"])) {
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* const code = fs.readFileSync(filePath, "utf8");
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* const messages = linter.verify(code, config, filePath);
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*
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* console.log(messages);
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* }
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*
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* @author Toru Nagashima <https://github.com/mysticatea>
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const fs = require("fs");
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const path = require("path");
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const getGlobParent = require("glob-parent");
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const isGlob = require("is-glob");
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const escapeRegExp = require("escape-string-regexp");
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const { Minimatch } = require("minimatch");
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const {
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Legacy: {
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IgnorePattern,
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CascadingConfigArrayFactory
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}
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} = require("@eslint/eslintrc");
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const debug = require("debug")("eslint:file-enumerator");
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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const minimatchOpts = { dot: true, matchBase: true };
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const dotfilesPattern = /(?:(?:^\.)|(?:[/\\]\.))[^/\\.].*/u;
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const NONE = 0;
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const IGNORED_SILENTLY = 1;
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const IGNORED = 2;
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// For VSCode intellisense
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/** @typedef {ReturnType<CascadingConfigArrayFactory.getConfigArrayForFile>} ConfigArray */
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/**
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* @typedef {Object} FileEnumeratorOptions
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* @property {CascadingConfigArrayFactory} [configArrayFactory] The factory for config arrays.
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* @property {string} [cwd] The base directory to start lookup.
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* @property {string[]} [extensions] The extensions to match files for directory patterns.
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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] The flag to check ignored files.
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* @property {string[]} [rulePaths] The value of `--rulesdir` option.
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*/
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/**
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* @typedef {Object} FileAndConfig
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* @property {string} filePath The path to a target file.
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* @property {ConfigArray} config The config entries of that file.
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* @property {boolean} ignored If `true` then this file should be ignored and warned because it was directly specified.
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*/
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/**
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* @typedef {Object} FileEntry
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* @property {string} filePath The path to a target file.
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* @property {ConfigArray} config The config entries of that file.
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* @property {NONE|IGNORED_SILENTLY|IGNORED} flag The flag.
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* - `NONE` means the file is a target file.
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* - `IGNORED_SILENTLY` means the file should be ignored silently.
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* - `IGNORED` means the file should be ignored and warned because it was directly specified.
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*/
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/**
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* @typedef {Object} FileEnumeratorInternalSlots
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* @property {CascadingConfigArrayFactory} configArrayFactory The factory for config arrays.
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* @property {string} cwd The base directory to start lookup.
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* @property {RegExp|null} extensionRegExp The RegExp to test if a string ends with specific file extensions.
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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} ignoreFlag The flag to check ignored files.
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* @property {(filePath:string, dot:boolean) => boolean} defaultIgnores The default predicate function to ignore files.
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*/
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/** @type {WeakMap<FileEnumerator, FileEnumeratorInternalSlots>} */
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const internalSlotsMap = new WeakMap();
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/**
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* Check if a string is a glob pattern or not.
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* @param {string} pattern A glob pattern.
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* @returns {boolean} `true` if the string is a glob pattern.
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*/
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function isGlobPattern(pattern) {
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return isGlob(path.sep === "\\" ? pattern.replace(/\\/gu, "/") : pattern);
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}
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/**
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* Get stats of a given path.
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* @param {string} filePath The path to target file.
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* @throws {Error} As may be thrown by `fs.statSync`.
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* @returns {fs.Stats|null} The stats.
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* @private
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*/
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function statSafeSync(filePath) {
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try {
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return fs.statSync(filePath);
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} catch (error) {
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/* c8 ignore next */
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if (error.code !== "ENOENT") {
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throw error;
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}
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return null;
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}
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}
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/**
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* Get filenames in a given path to a directory.
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* @param {string} directoryPath The path to target directory.
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* @throws {Error} As may be thrown by `fs.readdirSync`.
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* @returns {import("fs").Dirent[]} The filenames.
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* @private
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*/
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function readdirSafeSync(directoryPath) {
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try {
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return fs.readdirSync(directoryPath, { withFileTypes: true });
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} catch (error) {
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/* c8 ignore next */
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if (error.code !== "ENOENT") {
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throw error;
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}
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return [];
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}
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}
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/**
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* Create a `RegExp` object to detect extensions.
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* @param {string[] | null} extensions The extensions to create.
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* @returns {RegExp | null} The created `RegExp` object or null.
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*/
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function createExtensionRegExp(extensions) {
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if (extensions) {
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const normalizedExts = extensions.map(ext => escapeRegExp(
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ext.startsWith(".")
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? ext.slice(1)
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: ext
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));
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return new RegExp(
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`.\\.(?:${normalizedExts.join("|")})$`,
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"u"
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);
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}
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return null;
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}
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/**
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* The error type when no files match a glob.
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*/
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class NoFilesFoundError extends Error {
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/**
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* @param {string} pattern The glob pattern which was not found.
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* @param {boolean} globDisabled If `true` then the pattern was a glob pattern, but glob was disabled.
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*/
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constructor(pattern, globDisabled) {
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super(`No files matching '${pattern}' were found${globDisabled ? " (glob was disabled)" : ""}.`);
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this.messageTemplate = "file-not-found";
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this.messageData = { pattern, globDisabled };
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}
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}
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/**
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* The error type when there are files matched by a glob, but all of them have been ignored.
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*/
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class AllFilesIgnoredError extends Error {
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/**
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* @param {string} pattern The glob pattern which was not found.
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*/
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constructor(pattern) {
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super(`All files matched by '${pattern}' are ignored.`);
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this.messageTemplate = "all-files-ignored";
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this.messageData = { pattern };
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}
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}
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/**
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* This class provides the functionality that enumerates every file which is
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* matched by given glob patterns and that configuration.
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*/
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class FileEnumerator {
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/**
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* Initialize this enumerator.
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* @param {FileEnumeratorOptions} options The options.
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*/
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constructor({
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cwd = process.cwd(),
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configArrayFactory = new CascadingConfigArrayFactory({
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cwd,
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getEslintRecommendedConfig: () => require("@eslint/js").configs.recommended,
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getEslintAllConfig: () => require("@eslint/js").configs.all
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}),
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extensions = null,
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globInputPaths = true,
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errorOnUnmatchedPattern = true,
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ignore = true
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} = {}) {
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internalSlotsMap.set(this, {
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configArrayFactory,
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cwd,
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defaultIgnores: IgnorePattern.createDefaultIgnore(cwd),
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extensionRegExp: createExtensionRegExp(extensions),
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globInputPaths,
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errorOnUnmatchedPattern,
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ignoreFlag: ignore
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});
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}
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/**
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* Check if a given file is target or not.
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* @param {string} filePath The path to a candidate file.
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* @param {ConfigArray} [providedConfig] Optional. The configuration for the file.
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* @returns {boolean} `true` if the file is a target.
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*/
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isTargetPath(filePath, providedConfig) {
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const {
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configArrayFactory,
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extensionRegExp
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} = internalSlotsMap.get(this);
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// If `--ext` option is present, use it.
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if (extensionRegExp) {
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return extensionRegExp.test(filePath);
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}
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// `.js` file is target by default.
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if (filePath.endsWith(".js")) {
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return true;
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}
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// use `overrides[].files` to check additional targets.
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const config =
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providedConfig ||
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configArrayFactory.getConfigArrayForFile(
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filePath,
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{ ignoreNotFoundError: true }
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);
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return config.isAdditionalTargetPath(filePath);
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}
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/**
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* Iterate files which are matched by given glob patterns.
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* @param {string|string[]} patternOrPatterns The glob patterns to iterate files.
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* @throws {NoFilesFoundError|AllFilesIgnoredError} On an unmatched pattern.
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* @returns {IterableIterator<FileAndConfig>} The found files.
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*/
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*iterateFiles(patternOrPatterns) {
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const { globInputPaths, errorOnUnmatchedPattern } = internalSlotsMap.get(this);
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const patterns = Array.isArray(patternOrPatterns)
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? patternOrPatterns
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: [patternOrPatterns];
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debug("Start to iterate files: %o", patterns);
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// The set of paths to remove duplicate.
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const set = new Set();
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for (const pattern of patterns) {
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let foundRegardlessOfIgnored = false;
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let found = false;
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// Skip empty string.
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if (!pattern) {
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continue;
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}
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// Iterate files of this pattern.
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for (const { config, filePath, flag } of this._iterateFiles(pattern)) {
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foundRegardlessOfIgnored = true;
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if (flag === IGNORED_SILENTLY) {
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continue;
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}
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found = true;
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// Remove duplicate paths while yielding paths.
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if (!set.has(filePath)) {
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set.add(filePath);
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yield {
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config,
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filePath,
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ignored: flag === IGNORED
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};
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}
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}
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// Raise an error if any files were not found.
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if (errorOnUnmatchedPattern) {
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if (!foundRegardlessOfIgnored) {
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throw new NoFilesFoundError(
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pattern,
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!globInputPaths && isGlob(pattern)
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);
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}
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if (!found) {
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throw new AllFilesIgnoredError(pattern);
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}
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}
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}
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debug(`Complete iterating files: ${JSON.stringify(patterns)}`);
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}
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/**
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* Iterate files which are matched by a given glob pattern.
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* @param {string} pattern The glob pattern to iterate files.
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* @returns {IterableIterator<FileEntry>} The found files.
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*/
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_iterateFiles(pattern) {
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const { cwd, globInputPaths } = internalSlotsMap.get(this);
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const absolutePath = path.resolve(cwd, pattern);
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const isDot = dotfilesPattern.test(pattern);
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const stat = statSafeSync(absolutePath);
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if (stat && stat.isDirectory()) {
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return this._iterateFilesWithDirectory(absolutePath, isDot);
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}
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if (stat && stat.isFile()) {
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return this._iterateFilesWithFile(absolutePath);
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}
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if (globInputPaths && isGlobPattern(pattern)) {
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return this._iterateFilesWithGlob(pattern, isDot);
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}
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return [];
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}
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/**
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* Iterate a file which is matched by a given path.
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* @param {string} filePath The path to the target file.
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* @returns {IterableIterator<FileEntry>} The found files.
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* @private
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*/
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_iterateFilesWithFile(filePath) {
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debug(`File: ${filePath}`);
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const { configArrayFactory } = internalSlotsMap.get(this);
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const config = configArrayFactory.getConfigArrayForFile(filePath);
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const ignored = this._isIgnoredFile(filePath, { config, direct: true });
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const flag = ignored ? IGNORED : NONE;
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return [{ config, filePath, flag }];
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}
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/**
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* Iterate files in a given path.
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* @param {string} directoryPath The path to the target directory.
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* @param {boolean} dotfiles If `true` then it doesn't skip dot files by default.
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* @returns {IterableIterator<FileEntry>} The found files.
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* @private
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*/
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_iterateFilesWithDirectory(directoryPath, dotfiles) {
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debug(`Directory: ${directoryPath}`);
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||
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|
return this._iterateFilesRecursive(
|
||
|
|
directoryPath,
|
||
|
|
{ dotfiles, recursive: true, selector: null }
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Iterate files which are matched by a given glob pattern.
|
||
|
|
* @param {string} pattern The glob pattern to iterate files.
|
||
|
|
* @param {boolean} dotfiles If `true` then it doesn't skip dot files by default.
|
||
|
|
* @returns {IterableIterator<FileEntry>} The found files.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
_iterateFilesWithGlob(pattern, dotfiles) {
|
||
|
|
debug(`Glob: ${pattern}`);
|
||
|
|
|
||
|
|
const { cwd } = internalSlotsMap.get(this);
|
||
|
|
const directoryPath = path.resolve(cwd, getGlobParent(pattern));
|
||
|
|
const absolutePath = path.resolve(cwd, pattern);
|
||
|
|
const globPart = absolutePath.slice(directoryPath.length + 1);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* recursive if there are `**` or path separators in the glob part.
|
||
|
|
* Otherwise, patterns such as `src/*.js`, it doesn't need recursive.
|
||
|
|
*/
|
||
|
|
const recursive = /\*\*|\/|\\/u.test(globPart);
|
||
|
|
const selector = new Minimatch(absolutePath, minimatchOpts);
|
||
|
|
|
||
|
|
debug(`recursive? ${recursive}`);
|
||
|
|
|
||
|
|
return this._iterateFilesRecursive(
|
||
|
|
directoryPath,
|
||
|
|
{ dotfiles, recursive, selector }
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Iterate files in a given path.
|
||
|
|
* @param {string} directoryPath The path to the target directory.
|
||
|
|
* @param {Object} options The options to iterate files.
|
||
|
|
* @param {boolean} [options.dotfiles] If `true` then it doesn't skip dot files by default.
|
||
|
|
* @param {boolean} [options.recursive] If `true` then it dives into sub directories.
|
||
|
|
* @param {InstanceType<Minimatch>} [options.selector] The matcher to choose files.
|
||
|
|
* @returns {IterableIterator<FileEntry>} The found files.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
*_iterateFilesRecursive(directoryPath, options) {
|
||
|
|
debug(`Enter the directory: ${directoryPath}`);
|
||
|
|
const { configArrayFactory } = internalSlotsMap.get(this);
|
||
|
|
|
||
|
|
/** @type {ConfigArray|null} */
|
||
|
|
let config = null;
|
||
|
|
|
||
|
|
// Enumerate the files of this directory.
|
||
|
|
for (const entry of readdirSafeSync(directoryPath)) {
|
||
|
|
const filePath = path.join(directoryPath, entry.name);
|
||
|
|
const fileInfo = entry.isSymbolicLink() ? statSafeSync(filePath) : entry;
|
||
|
|
|
||
|
|
if (!fileInfo) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check if the file is matched.
|
||
|
|
if (fileInfo.isFile()) {
|
||
|
|
if (!config) {
|
||
|
|
config = configArrayFactory.getConfigArrayForFile(
|
||
|
|
filePath,
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We must ignore `ConfigurationNotFoundError` at this
|
||
|
|
* point because we don't know if target files exist in
|
||
|
|
* this directory.
|
||
|
|
*/
|
||
|
|
{ ignoreNotFoundError: true }
|
||
|
|
);
|
||
|
|
}
|
||
|
|
const matched = options.selector
|
||
|
|
|
||
|
|
// Started with a glob pattern; choose by the pattern.
|
||
|
|
? options.selector.match(filePath)
|
||
|
|
|
||
|
|
// Started with a directory path; choose by file extensions.
|
||
|
|
: this.isTargetPath(filePath, config);
|
||
|
|
|
||
|
|
if (matched) {
|
||
|
|
const ignored = this._isIgnoredFile(filePath, { ...options, config });
|
||
|
|
const flag = ignored ? IGNORED_SILENTLY : NONE;
|
||
|
|
|
||
|
|
debug(`Yield: ${entry.name}${ignored ? " but ignored" : ""}`);
|
||
|
|
yield {
|
||
|
|
config: configArrayFactory.getConfigArrayForFile(filePath),
|
||
|
|
filePath,
|
||
|
|
flag
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
debug(`Didn't match: ${entry.name}`);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Dive into the sub directory.
|
||
|
|
} else if (options.recursive && fileInfo.isDirectory()) {
|
||
|
|
if (!config) {
|
||
|
|
config = configArrayFactory.getConfigArrayForFile(
|
||
|
|
filePath,
|
||
|
|
{ ignoreNotFoundError: true }
|
||
|
|
);
|
||
|
|
}
|
||
|
|
const ignored = this._isIgnoredFile(
|
||
|
|
filePath + path.sep,
|
||
|
|
{ ...options, config }
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!ignored) {
|
||
|
|
yield* this._iterateFilesRecursive(filePath, options);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
debug(`Leave the directory: ${directoryPath}`);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if a given file should be ignored.
|
||
|
|
* @param {string} filePath The path to a file to check.
|
||
|
|
* @param {Object} options Options
|
||
|
|
* @param {ConfigArray} [options.config] The config for this file.
|
||
|
|
* @param {boolean} [options.dotfiles] If `true` then this is not ignore dot files by default.
|
||
|
|
* @param {boolean} [options.direct] If `true` then this is a direct specified file.
|
||
|
|
* @returns {boolean} `true` if the file should be ignored.
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
_isIgnoredFile(filePath, {
|
||
|
|
config: providedConfig,
|
||
|
|
dotfiles = false,
|
||
|
|
direct = false
|
||
|
|
}) {
|
||
|
|
const {
|
||
|
|
configArrayFactory,
|
||
|
|
defaultIgnores,
|
||
|
|
ignoreFlag
|
||
|
|
} = internalSlotsMap.get(this);
|
||
|
|
|
||
|
|
if (ignoreFlag) {
|
||
|
|
const config =
|
||
|
|
providedConfig ||
|
||
|
|
configArrayFactory.getConfigArrayForFile(
|
||
|
|
filePath,
|
||
|
|
{ ignoreNotFoundError: true }
|
||
|
|
);
|
||
|
|
const ignores =
|
||
|
|
config.extractConfig(filePath).ignores || defaultIgnores;
|
||
|
|
|
||
|
|
return ignores(filePath, dotfiles);
|
||
|
|
}
|
||
|
|
|
||
|
|
return !direct && defaultIgnores(filePath, dotfiles);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Public Interface
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
module.exports = { FileEnumerator };
|