89 lines
2.5 KiB
JavaScript
89 lines
2.5 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const minimatch = require('minimatch');
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const {ESLint} = require('eslint');
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const listChangedFiles = require('../shared/listChangedFiles');
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const allPaths = ['**/*.js'];
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let changedFiles = null;
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async function runESLintOnFilesWithOptions(filePatterns, onlyChanged, options) {
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const eslint = new ESLint(options);
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const formatter = await eslint.loadFormatter();
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if (onlyChanged && changedFiles === null) {
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// Calculate lazily.
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changedFiles = [...listChangedFiles()];
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}
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const finalFilePatterns = onlyChanged
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? intersect(changedFiles, filePatterns)
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: filePatterns;
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const results = await eslint.lintFiles(finalFilePatterns);
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if (options != null && options.fix === true) {
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await ESLint.outputFixes(results);
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}
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// When using `ignorePattern`, eslint will show `File ignored...` warnings for any ignores.
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// We don't care because we *expect* some passed files will be ignores if `ignorePattern` is used.
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const messages = results.filter(item => {
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if (!onlyChanged) {
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// Don't suppress the message on a full run.
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// We only expect it to happen for "only changed" runs.
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return true;
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}
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const ignoreMessage =
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'File ignored because of a matching ignore pattern. Use "--no-ignore" to override.';
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return !(item.messages[0] && item.messages[0].message === ignoreMessage);
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});
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const errorCount = results.reduce(
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(count, result) => count + result.errorCount,
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0
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);
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const warningCount = results.reduce(
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(count, result) => count + result.warningCount,
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0
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);
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const ignoredMessageCount = results.length - messages.length;
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return {
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output: formatter.format(messages),
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errorCount: errorCount,
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warningCount: warningCount - ignoredMessageCount,
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};
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}
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function intersect(files, patterns) {
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let intersection = [];
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patterns.forEach(pattern => {
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intersection = [
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...intersection,
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...minimatch.match(files, pattern, {matchBase: true}),
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];
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});
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return [...new Set(intersection)];
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}
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async function runESLint({onlyChanged, ...options}) {
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if (typeof onlyChanged !== 'boolean') {
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throw new Error('Pass options.onlyChanged as a boolean.');
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}
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const {errorCount, warningCount, output} = await runESLintOnFilesWithOptions(
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allPaths,
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onlyChanged,
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options
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);
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console.log(output);
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return errorCount === 0 && warningCount === 0;
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}
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module.exports = runESLint;
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