angular-cn/tools/code.angularjs.org/add-license-to-rx.js

#! /usr/bin/env node
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * TODO: remove this file when license is included in RxJS bundles.
 * https://github.com/ReactiveX/RxJS/issues/1067
 *
 * This script runs after bundles have already been copied to the build-path,
 * to prepend the license to each bundle.
 **/
var fs = require('fs');
var args = require('minimist')(process.argv);

var license = fs.readFileSync(args['license-path']);
// Make the license block into a JS comment
license = `/**
${license}
**/
`;

var bundles =
    fs.readdirSync(args['build-path'])
        // Match files that begin with Rx and end with js
        .filter(bundle => /^Rx\.?.*\.js$/.test(bundle))
        // Load file contents
        .map(bundle => {
          return {
            path: bundle,
            contents: fs.readFileSync(`${args['build-path']}/${bundle}`).toString()
          };
        })
        // Concatenate license to bundle
        .map(bundle => { return {path: bundle.path, contents: `${license}${bundle.contents}`}; })
        // Write file to disk
        .forEach(
            bundle => fs.writeFileSync(`${args['build-path']}/${bundle.path}`, bundle.contents));