b9dce19b3d
Adds a command for building all release packages. This command is primarily used by the release tool for building release output in version branches. The release tool cannot build the release packages configured in `master` as those packages could differ from the packages available in a given version branch. Also, the build process could have changed, so we want to have an API for building release packages that is guaranteed to be consistent across branches. PR Close #38656
37 lines
1.7 KiB
TypeScript
37 lines
1.7 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {fork} from 'child_process';
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import {BuiltPackage} from '../config/index';
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/**
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* Builds the release output without polluting the process stdout. Build scripts commonly
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* print messages to stderr or stdout. This is fine in most cases, but sometimes other tooling
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* reserves stdout for data transfer (e.g. when `ng release build --json` is invoked). To not
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* pollute the stdout in such cases, we launch a child process for building the release packages
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* and redirect all stdout output to the stderr channel (which can be read in the terminal).
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*/
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export async function buildReleaseOutput(): Promise<BuiltPackage[]|null> {
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return new Promise(resolve => {
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const buildProcess = fork(require.resolve('./build-worker'), [], {
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// The stdio option is set to redirect any "stdout" output directly to the "stderr" file
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// descriptor. An additional "ipc" file descriptor is created to support communication with
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// the build process. https://nodejs.org/api/child_process.html#child_process_options_stdio.
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stdio: ['inherit', 2, 2, 'ipc'],
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});
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let builtPackages: BuiltPackage[]|null = null;
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// The child process will pass the `buildPackages()` output through the
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// IPC channel. We keep track of it so that we can use it as resolve value.
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buildProcess.on('message', buildResponse => builtPackages = buildResponse);
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// On child process exit, resolve the promise with the received output.
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buildProcess.on('exit', () => resolve(builtPackages));
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});
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}
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