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build.js
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build.js
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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.
*/
/**
* script to build (transpile) files.
* By default it transpiles js files for all packages and writes them
* into `build/` directory.
* Non-js files not matching IGNORE_PATTERN will be copied without transpiling.
*
* Example:
* node ./scripts/build.js
* node ./scripts/build.js /users/123/jest/packages/jest-111/src/111.js
*
* NOTE: this script is node@6 compatible
*/
'use strict';
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const babel = require('@babel/core');
const chalk = require('chalk');
const glob = require('glob');
const micromatch = require('micromatch');
const prettier = require('prettier');
const transformOptions = require('../babel.config.js');
const {getPackages, adjustToTerminalWidth, OK} = require('./buildUtils');
const SRC_DIR = 'src';
const BUILD_DIR = 'build';
const JS_FILES_PATTERN = '**/*.js';
const TS_FILES_PATTERN = '**/*.ts';
const IGNORE_PATTERN = '**/__{tests,mocks}__/**';
const PACKAGES_DIR = path.resolve(__dirname, '../packages');
const INLINE_REQUIRE_EXCLUDE_LIST =
/packages\/expect|(jest-(circus|diff|get-type|jasmine2|matcher-utils|message-util|regex-util|snapshot))|pretty-format\//;
const prettierConfig = prettier.resolveConfig.sync(__filename);
prettierConfig.trailingComma = 'none';
prettierConfig.parser = 'babel';
function getPackageName(file) {
return path.relative(PACKAGES_DIR, file).split(path.sep)[0];
}
function getBuildPath(file, buildFolder) {
const pkgName = getPackageName(file);
const pkgSrcPath = path.resolve(PACKAGES_DIR, pkgName, SRC_DIR);
const pkgBuildPath = path.resolve(PACKAGES_DIR, pkgName, buildFolder);
const relativeToSrcPath = path.relative(pkgSrcPath, file);
return path.resolve(pkgBuildPath, relativeToSrcPath).replace(/\.ts$/, '.js');
}
function buildNodePackage({packageDir, pkg}) {
const srcDir = path.resolve(packageDir, SRC_DIR);
const pattern = path.resolve(srcDir, '**/*');
const files = glob.sync(pattern, {nodir: true});
process.stdout.write(adjustToTerminalWidth(`${pkg.name}\n`));
files.forEach(file => buildFile(file, true));
assert.ok(
fs.existsSync(path.resolve(packageDir, pkg.main)),
`Main file "${pkg.main}" in ${pkg.name} should exist`,
);
process.stdout.write(`${OK}\n`);
}
function buildFile(file, silent) {
const destPath = getBuildPath(file, BUILD_DIR);
if (micromatch.isMatch(file, IGNORE_PATTERN)) {
silent ||
process.stdout.write(
chalk.dim(' \u2022 ') +
path.relative(PACKAGES_DIR, file) +
' (ignore)\n',
);
return;
}
fs.mkdirSync(path.dirname(destPath), {recursive: true});
if (
!micromatch.isMatch(file, JS_FILES_PATTERN) &&
!micromatch.isMatch(file, TS_FILES_PATTERN)
) {
fs.createReadStream(file).pipe(fs.createWriteStream(destPath));
silent ||
process.stdout.write(
chalk.red(' \u2022 ') +
path.relative(PACKAGES_DIR, file) +
chalk.red(' \u21D2 ') +
path.relative(PACKAGES_DIR, destPath) +
' (copy)' +
'\n',
);
} else {
const options = Object.assign({}, transformOptions);
options.plugins = options.plugins.slice();
if (INLINE_REQUIRE_EXCLUDE_LIST.test(file)) {
// The excluded modules are injected into the user's sandbox
// We need to guard some globals there.
options.plugins.push(
require.resolve('./babel-plugin-jest-native-globals'),
);
} else {
options.plugins = options.plugins.map(plugin => {
if (
Array.isArray(plugin) &&
plugin[0] === '@babel/plugin-transform-modules-commonjs'
) {
return [plugin[0], Object.assign({}, plugin[1], {lazy: true})];
}
return plugin;
});
}
const transformed = babel.transformFileSync(file, options).code;
const prettyCode = prettier.format(transformed, prettierConfig);
fs.writeFileSync(destPath, prettyCode);
silent ||
process.stdout.write(
chalk.green(' \u2022 ') +
path.relative(PACKAGES_DIR, file) +
chalk.green(' \u21D2 ') +
path.relative(PACKAGES_DIR, destPath) +
'\n',
);
}
}
const files = process.argv.slice(2);
if (files.length) {
files.forEach(file => buildFile(file));
} else {
const packages = getPackages();
process.stdout.write(chalk.inverse(' Building packages \n'));
packages.forEach(buildNodePackage);
}