/
lintTs.mjs
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/
lintTs.mjs
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import * as os from 'os';
import * as path from 'path';
import * as url from 'url';
import chalk from 'chalk';
import {ESLint} from 'eslint';
import pLimit from 'p-limit';
import {getPackagesWithTsConfig} from './buildUtils.mjs';
// we want to limit the number of processes we spawn
const cpus = Math.max(
1,
(typeof os.availableParallelism === 'function'
? os.availableParallelism()
: os.cpus().length) - 1,
);
const mutex = pLimit(cpus);
const fix = process.argv.slice(2).some(arg => arg === '--fix');
const monorepoRoot = path.resolve(url.fileURLToPath(import.meta.url), '../..');
// TODO: remove this list at some point and run against all packages
const packagesToTest = [
'babel-jest',
'babel-plugin-jest-hoist',
'diff-sequences',
'jest',
'jest-changed-files',
'jest-console',
'jest-docblock',
'jest-environment',
'jest-globals',
'jest-resolve-dependencies',
'jest-schemas',
'jest-source-map',
'jest-test-result',
'jest-test-sequencer',
'jest-transform',
'jest-types',
'jest-watcher',
'test-globals',
'test-utils',
];
const packagesWithTs = getPackagesWithTsConfig()
.map(({packageDir}) => packageDir)
.concat(path.resolve(monorepoRoot, 'e2e'))
.filter(packageDir => packagesToTest.some(pkg => packageDir.endsWith(pkg)));
const allLintResults = [];
try {
await Promise.all(
packagesWithTs.map(packageDir =>
mutex(async () => {
const eslint = new ESLint({
cache: true,
cacheLocation: path.resolve(packageDir, '.eslintcache'),
cwd: monorepoRoot,
extensions: ['.ts'],
fix,
fixTypes: ['problem', 'suggestion', 'layout'],
overrideConfig: {
extends: [
'plugin:@typescript-eslint/recommended-requiring-type-checking',
],
overrides: [
{
files: ['**/__tests__/**'],
plugins: ['jest'],
rules: {
'@typescript-eslint/unbound-method': 'off',
'jest/unbound-method': 'error',
},
},
],
parser: '@typescript-eslint/parser',
parserOptions: {
project: ['./tsconfig.json', `${packageDir}/tsconfig.json`],
tsconfigRootDir: monorepoRoot,
},
plugins: ['@typescript-eslint'],
root: true,
rules: {
'@typescript-eslint/consistent-type-exports': 'error',
'@typescript-eslint/dot-notation': 'error',
'@typescript-eslint/non-nullable-type-assertion-style': 'error',
'@typescript-eslint/prefer-nullish-coalescing': 'error',
'@typescript-eslint/prefer-readonly': 'error',
// TODO: activate this at some point
// '@typescript-eslint/prefer-readonly-parameter-types': 'error',
'@typescript-eslint/prefer-reduce-type-parameter': 'error',
'@typescript-eslint/return-await': 'error',
'@typescript-eslint/strict-boolean-expressions': 'error',
'@typescript-eslint/switch-exhaustiveness-check': 'error',
},
},
});
const filesToLint = packageDir.endsWith('e2e')
? `${packageDir}/__tests__/`
: `${packageDir}/src/`;
let results = await eslint.lintFiles(filesToLint);
if (fix) {
await ESLint.outputFixes(results);
// re-run after outputting fixes
results = await eslint.lintFiles(filesToLint);
}
const filteredResults = ESLint.getErrorResults(results);
allLintResults.push(...filteredResults);
}),
),
);
} catch (e) {
console.error(
chalk.inverse.red(' Unable to lint using TypeScript info files '),
);
throw e;
}
if (allLintResults.length > 0) {
const eslint = new ESLint({cwd: monorepoRoot});
const formatter = await eslint.loadFormatter('stylish');
const resultText = formatter.format(allLintResults);
console.error(resultText);
console.error(
chalk.inverse.red(' Unable to lint using TypeScript info files '),
);
process.exitCode = 1;
} else {
console.log(
chalk.inverse.green(' Successfully linted using TypeScript info files '),
);
}