metro/scripts/build.js

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2017-01-26 12:56:40 +00:00
/**
* Copyright (c) 2014, Facebook, Inc. All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
/**
* script to build (transpile) files.
* By default it transpiles all files for all packages and writes them
* into `build/` directory.
* Non-js or files matching IGNORE_PATTERN will be copied without transpiling.
*
* Example:
* node ./scripts/build.js
* node ./scripts/build.js /user/c/metro-bundler/packages/metro-abc/src/abc.js
*/
const babel = require('babel-core');
const chalk = require('chalk');
const fs = require('fs');
const getPackages = require('./_getPackages');
const glob = require('glob');
const micromatch = require('micromatch');
const path = require('path');
const spawnSync = require('child_process').spawnSync;
const SRC_DIR = 'src';
const JS_FILES_PATTERN = '**/*.js';
const IGNORE_PATTERN = '**/__tests__/**';
const PACKAGES_DIR = path.resolve(__dirname, '../packages');
const babelOptions = JSON.parse(fs.readFileSync(
path.resolve(__dirname, '..', '.babelrc'),
'utf8'
));
babelOptions.babelrc = false;
const fixedWidth = str => {
const WIDTH = 80;
const strs = str.match(new RegExp(`(.{1,${WIDTH}})`, 'g'));
let lastString = strs[strs.length - 1];
if (lastString.length < WIDTH) {
lastString += Array(WIDTH - lastString.length).join(chalk.dim('.'));
}
return strs.slice(0, -1).concat(lastString).join('\n');
};
function buildPackage(p) {
const srcDir = path.resolve(p, SRC_DIR);
const pattern = path.resolve(srcDir, '**/*');
const files = glob.sync(pattern, {nodir: true});
process.stdout.write(
fixedWidth(`${path.basename(p)}\n`)
);
files.forEach(file => buildFile(file, true));
process.stdout.write(`[ ${chalk.green('OK')} ]\n`);
}
function buildFile(file, silent) {
const packageName = path.relative(PACKAGES_DIR, file).split(path.sep)[0];
const packageSrcPath = path.resolve(PACKAGES_DIR, packageName, 'src');
const packageBuildPath = path.resolve(PACKAGES_DIR, packageName, 'build');
const relativeToSrcPath = path.relative(packageSrcPath, file);
const destPath = path.resolve(packageBuildPath, relativeToSrcPath);
spawnSync('mkdir', ['-p', path.dirname(destPath)]);
if (micromatch.isMatch(file, IGNORE_PATTERN)) {
silent || process.stdout.write(
chalk.dim(' \u2022 ') +
path.relative(PACKAGES_DIR, file) +
' (ignore)\n'
);
} else if (!micromatch.isMatch(file, JS_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 transformed = babel.transformFileSync(file, babelOptions).code;
spawnSync('mkdir', ['-p', path.dirname(destPath)]);
fs.writeFileSync(destPath, transformed);
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(buildFile);
} else {
process.stdout.write(chalk.bold.inverse('Building packages\n'));
getPackages().forEach(buildPackage);
process.stdout.write('\n');
}