| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | 'use strict'; |
| 9 | |
| 10 | const minimatch = require('minimatch'); |
| 11 | const {ESLint} = require('eslint'); |
| 12 | const listChangedFiles = require('../shared/listChangedFiles'); |
| 13 | |
| 14 | const allPaths = ['**/*.js']; |
| 15 | |
| 16 | let changedFiles = null; |
| 17 | |
| 18 | async function runESLintOnFilesWithOptions(filePatterns, onlyChanged, options) { |
| 19 | const eslint = new ESLint(options); |
| 20 | const formatter = await eslint.loadFormatter(); |
| 21 | |
| 22 | if (onlyChanged && changedFiles === null) { |
| 23 | // Calculate lazily. |
| 24 | changedFiles = [...listChangedFiles()]; |
| 25 | } |
| 26 | const finalFilePatterns = onlyChanged |
| 27 | ? intersect(changedFiles, filePatterns) |
| 28 | : filePatterns; |
| 29 | const results = await eslint.lintFiles(finalFilePatterns); |
| 30 | |
| 31 | if (options != null && options.fix === true) { |
| 32 | await ESLint.outputFixes(results); |
| 33 | } |
| 34 | |
| 35 | // When using `ignorePattern`, eslint will show `File ignored...` warnings for any ignores. |
| 36 | // We don't care because we *expect* some passed files will be ignores if `ignorePattern` is used. |
| 37 | const messages = results.filter(item => { |
| 38 | if (!onlyChanged) { |
| 39 | // Don't suppress the message on a full run. |
| 40 | // We only expect it to happen for "only changed" runs. |
| 41 | return true; |
| 42 | } |
| 43 | const ignoreMessage = |
| 44 | 'File ignored because of a matching ignore pattern. Use "--no-ignore" to override.'; |
| 45 | return !(item.messages[0] && item.messages[0].message === ignoreMessage); |
| 46 | }); |
| 47 | |
| 48 | const errorCount = results.reduce( |
| 49 | (count, result) => count + result.errorCount, |
| 50 | 0 |
| 51 | ); |
| 52 | const warningCount = results.reduce( |
| 53 | (count, result) => count + result.warningCount, |
| 54 | 0 |
| 55 | ); |
| 56 | const ignoredMessageCount = results.length - messages.length; |
| 57 | return { |
| 58 | output: formatter.format(messages), |
| 59 | errorCount: errorCount, |
| 60 | warningCount: warningCount - ignoredMessageCount, |
| 61 | }; |
| 62 | } |
| 63 | |
| 64 | function intersect(files, patterns) { |
| 65 | let intersection = []; |
| 66 | patterns.forEach(pattern => { |
| 67 | intersection = [ |
| 68 | ...intersection, |
| 69 | ...minimatch.match(files, pattern, {matchBase: true}), |
| 70 | ]; |
| 71 | }); |
| 72 | return [...new Set(intersection)]; |
| 73 | } |
| 74 | |
| 75 | async function runESLint({onlyChanged, paths, ...options}) { |
| 76 | if (typeof onlyChanged !== 'boolean') { |
| 77 | throw new Error('Pass options.onlyChanged as a boolean.'); |
| 78 | } |
| 79 | if (onlyChanged && paths !== undefined) { |
| 80 | throw new Error('Cannot specify paths when onlyChanged is true.'); |
| 81 | } |
| 82 | if (paths === undefined || paths.length === 0) { |
| 83 | paths = allPaths; |
| 84 | } |
| 85 | const {errorCount, warningCount, output} = await runESLintOnFilesWithOptions( |
| 86 | paths, |
| 87 | onlyChanged, |
| 88 | options |
| 89 | ); |
| 90 | console.log(output); |
| 91 | return errorCount === 0 && warningCount === 0; |
| 92 | } |
| 93 | |
| 94 | module.exports = runESLint; |