mirror of https://github.com/facebook/jest.git
84 lines
2.1 KiB
JavaScript
84 lines
2.1 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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/**
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* Watch files for changes and rebuild (copy from 'src/' to `build/`) if changed
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*/
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import {execSync} from 'child_process';
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import * as path from 'path';
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import {fileURLToPath} from 'url';
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import chalk from 'chalk';
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import chokidar from 'chokidar';
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import fs from 'graceful-fs';
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import {PACKAGES_DIR, getPackages} from './buildUtils.mjs';
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const BUILD_CMD = `node ${path.resolve(
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path.dirname(fileURLToPath(import.meta.url)),
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'build.mjs',
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)}`;
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let filesToBuild = new Map();
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const exists = filename => {
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try {
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return fs.statSync(filename).isFile();
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} catch {}
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return false;
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};
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const rebuild = filename => filesToBuild.set(filename, true);
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chokidar
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.watch(
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getPackages().map(p => path.resolve(p.packageDir, 'src')),
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{
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ignoreInitial: true,
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ignored: /(^|[/\\])\../, // ignore dotfiles
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},
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)
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.on('all', (event, filePath) => {
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if (
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(event === 'change' || event === 'rename' || event === 'add') &&
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exists(filePath)
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) {
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console.log(
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chalk.green('->'),
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`${event}: ${path.relative(PACKAGES_DIR, filePath)}`,
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);
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rebuild(filePath);
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} else {
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filePath.split(path.join(path.sep, 'src', path.sep));
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const buildFile = filePath
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.replace(
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path.join(path.sep, 'src', path.sep),
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path.join(path.sep, 'build', path.sep),
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)
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.replace(/\.ts$/, '.js');
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try {
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fs.unlinkSync(buildFile);
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process.stdout.write(
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`${chalk.red(' \u2022 ')}${path.relative(
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PACKAGES_DIR,
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buildFile,
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)} (deleted)\n`,
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);
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} catch {}
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}
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});
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setInterval(() => {
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const files = Array.from(filesToBuild.keys());
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if (files.length) {
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filesToBuild = new Map();
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try {
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execSync(`${BUILD_CMD} ${files.join(' ')}`, {stdio: [0, 1, 2]});
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} catch {}
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}
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}, 100);
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console.log(chalk.red('->'), chalk.cyan('Watching for changes...'));
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