mirror of
https://github.com/angular/angular-cli.git
synced 2025-05-17 19:13:34 +08:00
3df6fba4c1
To support the eventual migration of the CLI to ESM, the CLI commandline tool is now bootstrapped by dynamically importing the main initialization code. This is done to allow the main bin file (`ng`) to remain CommonJS so that older versions of Node.js can be checked and validated prior to the execution of the CLI. This separate bootstrap file is needed to allow the use of a dynamic import expression without crashing older versions of Node.js that do not support dynamic import expressions and would otherwise throw a syntax error. This bootstrap file is required from the main bin file only after the Node.js version is determined to be in the supported range. The use of the dynamic import expression allows CommonJS code to execute either CommonJS or ESM code.
57 lines
1.9 KiB
JavaScript
Executable File
57 lines
1.9 KiB
JavaScript
Executable File
#!/usr/bin/env node
|
|
/**
|
|
* @license
|
|
* Copyright Google LLC 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
|
|
*/
|
|
|
|
/* eslint-disable no-console */
|
|
/* eslint-disable import/no-unassigned-import */
|
|
'use strict';
|
|
|
|
// Provide a title to the process in `ps`.
|
|
// Due to an obscure Mac bug, do not start this title with any symbol.
|
|
try {
|
|
process.title = 'ng ' + Array.from(process.argv).slice(2).join(' ');
|
|
} catch (_) {
|
|
// If an error happened above, use the most basic title.
|
|
process.title = 'ng';
|
|
}
|
|
|
|
// This node version check ensures that extremely old versions of node are not used.
|
|
// These may not support ES2015 features such as const/let/async/await/etc.
|
|
// These would then crash with a hard to diagnose error message.
|
|
var version = process.versions.node.split('.').map((part) => Number(part));
|
|
if (version[0] % 2 === 1 && version[0] > 14) {
|
|
// Allow new odd numbered releases with a warning (currently v15+)
|
|
console.warn(
|
|
'Node.js version ' +
|
|
process.version +
|
|
' detected.\n' +
|
|
'Odd numbered Node.js versions will not enter LTS status and should not be used for production.' +
|
|
' For more information, please see https://nodejs.org/en/about/releases/.',
|
|
);
|
|
|
|
require('./bootstrap');
|
|
} else if (
|
|
version[0] < 12 ||
|
|
version[0] === 13 ||
|
|
(version[0] === 12 && version[1] < 20) ||
|
|
(version[0] === 14 && version[1] < 15)
|
|
) {
|
|
// Error and exit if less than 12.20 or 13.x or less than 14.15
|
|
console.error(
|
|
'Node.js version ' +
|
|
process.version +
|
|
' detected.\n' +
|
|
'The Angular CLI requires a minimum Node.js version of either v12.20 or v14.15.\n\n' +
|
|
'Please update your Node.js version or visit https://nodejs.org/ for additional instructions.\n',
|
|
);
|
|
|
|
process.exitCode = 3;
|
|
} else {
|
|
require('./bootstrap');
|
|
}
|