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Commit ec19736

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refactor(@angular/cli): provide default serve target for applications
The `serve` command will now use a default project target and builder name if the target entry is not explicitly defined. This allows the removal of additional configuration from an `angular.json` file. If the target is already present than it will take priority over any default builder behavior. The default logic will use the appropriate development server builder for officially supported packages (`@angular/build`/`@angular-devkit/build-angular`). The `dev-server` builder from these packages will currently assume a `development` configuration is present within the `build` target. The default behavior may be expanded in the future to support more arbitrary `build` target configurations. If there is third-party package usage within the `build` target, the CLI will attempt to discover a `dev-server` builder within the same package used by the `build` target. If none is found, no default will be added and the `serve` command will issue an error when no explicit target is present.
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  • packages/angular/cli/src/commands/serve

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‎packages/angular/cli/src/commands/serve/cli.ts‎

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@@ -6,6 +6,7 @@
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* found in the LICENSE file at https://angular.dev/license
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*/
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import { workspaces } from '@angular-devkit/core';
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import { ArchitectCommandModule } from '../../command-builder/architect-command-module';
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import { CommandModuleImplementation } from '../../command-builder/command-module';
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import { RootCommands } from '../command-config';
@@ -19,4 +20,41 @@ export default class ServeCommandModule
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aliases = RootCommands['serve'].aliases;
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describe = 'Builds and serves your application, rebuilding on file changes.';
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longDescriptionPath?: string | undefined;
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override async findDefaultBuilderName(
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project: workspaces.ProjectDefinition,
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): Promise<string | undefined> {
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// Only application type projects have a dev server target
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if (project.extensions['projectType'] !== 'application') {
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return;
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}
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const buildTarget = project.targets.get('build');
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if (!buildTarget) {
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// No default if there is no build target
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return;
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}
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// Provide a default based on the defined builder for the 'build' target
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switch (buildTarget.builder) {
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case '@angular-devkit/build-angular:application':
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case '@angular-devkit/build-angular:browser-esbuild':
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case '@angular-devkit/build-angular:browser':
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return '@angular-devkit/build-angular:dev-server';
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case '@angular/build:application':
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return '@angular/build:dev-server';
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}
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// For other builders, attempt to resolve a 'dev-server' builder from the 'build' target package name
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const [buildPackageName] = buildTarget.builder.split(':', 1);
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if (buildPackageName) {
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try {
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const qualifiedBuilderName = `${buildPackageName}:dev-server`;
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await this.getArchitectHost().resolveBuilder(qualifiedBuilderName);
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// Use builder if it resolves successfully
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return qualifiedBuilderName;
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} catch {}
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}
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}
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}

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