mirror of
https://github.com/angular/angular-cli.git
synced 2025-05-20 13:32:43 +08:00
1bbabb24ca
Apart from better code quality, this helps reduce the time of CLI bootstrapping time, as retrieving the package manager name is a rather expensive operator due to the number of process spawns. The package manager name isn't always needed until we run a command and therefore in some cases we can see an improvement of around `~600ms`. Ex: `ng b --help`. From ` 1.34s` to `0.76s`. This will be important when we eventually introduce auto complete as users will get faster loopback.
108 lines
3.5 KiB
TypeScript
108 lines
3.5 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 { Argv } from 'yargs';
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import {
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CommandModuleImplementation,
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CommandScope,
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Options,
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OtherOptions,
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} from '../../command-builder/command-module';
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import {
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DEFAULT_SCHEMATICS_COLLECTION,
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SchematicsCommandArgs,
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SchematicsCommandModule,
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} from '../../command-builder/schematics-command-module';
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import { VERSION } from '../../utilities/version';
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interface NewCommandArgs extends SchematicsCommandArgs {
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collection?: string;
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}
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export class NewCommandModule
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extends SchematicsCommandModule
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implements CommandModuleImplementation<NewCommandArgs>
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{
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private readonly schematicName = 'ng-new';
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static override scope = CommandScope.Out;
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protected override allowPrivateSchematics = true;
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command = 'new [name]';
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aliases = 'n';
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describe = 'Creates a new Angular workspace.';
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longDescriptionPath?: string | undefined;
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override async builder(argv: Argv): Promise<Argv<NewCommandArgs>> {
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const localYargs = (await super.builder(argv)).option('collection', {
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alias: 'c',
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describe: 'A collection of schematics to use in generating the initial application.',
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type: 'string',
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});
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const {
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options: { collectionNameFromArgs },
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} = this.context.args;
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const collectionName =
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typeof collectionNameFromArgs === 'string'
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? collectionNameFromArgs
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: await this.getCollectionFromConfig();
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const workflow = await this.getOrCreateWorkflowForBuilder(collectionName);
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const collection = workflow.engine.createCollection(collectionName);
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const options = await this.getSchematicOptions(collection, this.schematicName, workflow);
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return this.addSchemaOptionsToCommand(localYargs, options);
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}
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async run(options: Options<NewCommandArgs> & OtherOptions): Promise<number | void> {
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// Register the version of the CLI in the registry.
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const collectionName = options.collection ?? (await this.getCollectionFromConfig());
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const workflow = await this.getOrCreateWorkflowForExecution(collectionName, options);
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workflow.registry.addSmartDefaultProvider('ng-cli-version', () => VERSION.full);
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const { dryRun, force, interactive, defaults, collection, ...schematicOptions } = options;
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// Compatibility check for NPM 7
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if (
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collectionName === '@schematics/angular' &&
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!schematicOptions.skipInstall &&
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(schematicOptions.packageManager === undefined || schematicOptions.packageManager === 'npm')
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) {
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this.context.packageManager.ensureCompatibility();
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}
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return this.runSchematic({
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collectionName,
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schematicName: this.schematicName,
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schematicOptions,
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executionOptions: {
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dryRun,
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force,
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interactive,
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defaults,
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},
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});
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}
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/** Find a collection from config that has an `ng-new` schematic. */
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private async getCollectionFromConfig(): Promise<string> {
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for (const collectionName of await this.getSchematicCollections()) {
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const workflow = this.getOrCreateWorkflowForBuilder(collectionName);
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const collection = workflow.engine.createCollection(collectionName);
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const schematicsInCollection = collection.description.schematics;
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if (Object.keys(schematicsInCollection).includes(this.schematicName)) {
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return collectionName;
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}
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}
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return DEFAULT_SCHEMATICS_COLLECTION;
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}
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}
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