angular-cn/packages/zone.js/rollup.config.js

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const node = require('rollup-plugin-node-resolve');
const commonjs = require('rollup-plugin-commonjs');
// Parse the stamp file produced by Bazel from the version control system
let version = '<unknown>';
if (bazel_version_file) {
const versionTag = require('fs')
.readFileSync(bazel_version_file, {encoding: 'utf-8'})
.split('\n')
.find(s => s.startsWith('BUILD_SCM_VERSION'));
// Don't assume BUILD_SCM_VERSION exists
if (versionTag) {
version = versionTag.split(' ')[1].trim();
}
}
// Add 'use strict' to the bundle, https://github.com/angular/angular/pull/40456
// When rollup build esm bundle of zone.js, there will be no 'use strict'
// since all esm bundles are `strict`, but when webpack load the esm bundle,
// because zone.js is a module without export and import, webpack is unable
// to determine the bundle is `esm` module or not, so it doesn't add the 'use strict'
// which webpack does to all other `esm` modules which has export or import.
// And it causes issues such as https://github.com/angular/angular/issues/40215
// `this` should be `undefined` but is assigned with `Window` instead.
const banner = `'use strict';
/**
* @license Angular v${version}
* (c) 2010-2021 Google LLC. https://angular.io/
* License: MIT
*/`;
module.exports = {
plugins: [
node({
mainFields: ['es2015', 'module', 'jsnext:main', 'main'],
}),
commonjs(),
],
external: id => {
if (/build-esm/.test(id)) {
return false;
}
return /rxjs/.test(id) || /electron/.test(id);
},
output: {
globals: {
electron: 'electron',
'rxjs/Observable': 'Rx',
'rxjs/Subscriber': 'Rx',
'rxjs/Subscription': 'Rx',
'rxjs/Scheduler': 'Rx.Scheduler',
'rxjs/scheduler/asap': 'Rx.Scheduler',
'rxjs/scheduler/async': 'Rx.Scheduler',
'rxjs/symbol/rxSubscriber': 'Rx.Symbol'
},
banner
},
}