f263306 refactor(@angular/build): make buildTarget optional in unit-test builder

Author: Angular Builds

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@angular/build",
-  "version": "21.0.0-next.5+sha-3b7dabb",
+  "version": "21.0.0-next.5+sha-f263306",
   "description": "Official build system for Angular",
   "keywords": [
     "Angular CLI",
@@ -23,7 +23,7 @@
   "builders": "builders.json",
   "dependencies": {
     "@ampproject/remapping": "2.3.0",
-    "@angular-devkit/architect": "github:angular/angular-devkit-architect-builds#3b7dabb",
+    "@angular-devkit/architect": "github:angular/angular-devkit-architect-builds#f263306",
     "@babel/core": "7.28.4",
     "@babel/helper-annotate-as-pure": "7.27.3",
     "@babel/helper-split-export-declaration": "7.24.7",
@@ -60,7 +60,7 @@
     "@angular/platform-browser": "^21.0.0-next.0",
     "@angular/platform-server": "^21.0.0-next.0",
     "@angular/service-worker": "^21.0.0-next.0",
-    "@angular/ssr": "github:angular/angular-ssr-builds#3b7dabb",
+    "@angular/ssr": "github:angular/angular-ssr-builds#f263306",
     "karma": "^6.4.0",
     "less": "^4.2.0",
     "ng-packagr": "^21.0.0-next.0",

src/builders/unit-test/builder.js

@@ -266,7 +266,15 @@ async function* execute(options, context, extensions) {
     // Get base build options from the buildTarget
     let buildTargetOptions;
     try {
-        buildTargetOptions = (await context.validateOptions(await context.getTargetOptions(normalizedOptions.buildTarget), await context.getBuilderNameForTarget(normalizedOptions.buildTarget)));
+        const builderName = await context.getBuilderNameForTarget(normalizedOptions.buildTarget);
+        if (builderName !== '@angular/build:application' &&
+            // TODO: Add comprehensive support for ng-packagr.
+            builderName !== '@angular/build:ng-packagr') {
+            context.logger.warn(`The 'buildTarget' is configured to use '${builderName}', which is not supported. ` +
+                `The 'unit-test' builder is designed to work with '@angular/build:application'. ` +
+                'Unexpected behavior or build failures may occur.');
+        }
+        buildTargetOptions = (await context.validateOptions(await context.getTargetOptions(normalizedOptions.buildTarget), builderName));
     }
     catch (e) {
         (0, error_1.assertIsError)(e);
@@ -304,10 +312,8 @@ async function* execute(options, context, extensions) {
                 ...runnerBuildOptions,
                 watch: normalizedOptions.watch,
                 progress: normalizedOptions.buildProgress ?? buildTargetOptions.progress,
+                ...(normalizedOptions.tsConfig ? { tsConfig: normalizedOptions.tsConfig } : {}),
             };
-            if (normalizedOptions.tsConfig) {
-                applicationBuildOptions.tsConfig = normalizedOptions.tsConfig;
-            }
             const dumpDirectory = normalizedOptions.dumpVirtualFiles
                 ? node_path_1.default.join(normalizedOptions.cacheOptions.path, 'unit-test', 'output-files')
                 : undefined;

src/builders/unit-test/schema.d.ts

@@ -10,10 +10,11 @@ export type Schema = {
     browsers?: string[];
     /**
      * Specifies the build target to use for the unit test build in the format
-     * `project:target[:configuration]`. You can also pass a comma-separated list of
+     * `project:target[:configuration]`. This defaults to the `build` target of the current
+     * project with the `development` configuration. You can also pass a comma-separated list of
      * configurations. Example: `project:target:production,staging`.
      */
-    buildTarget: string;
+    buildTarget?: string;
     /**
      * Enables coverage reporting for tests.
      */

src/builders/unit-test/schema.json

@@ -6,7 +6,7 @@
   "properties": {
     "buildTarget": {
       "type": "string",
-      "description": "Specifies the build target to use for the unit test build in the format `project:target[:configuration]`. You can also pass a comma-separated list of configurations. Example: `project:target:production,staging`.",
+      "description": "Specifies the build target to use for the unit test build in the format `project:target[:configuration]`. This defaults to the `build` target of the current project with the `development` configuration. You can also pass a comma-separated list of configurations. Example: `project:target:production,staging`.",
       "pattern": "^[^:\\s]*:[^:\\s]*(:[^\\s]+)?$"
     },
     "tsConfig": {
@@ -262,5 +262,5 @@
     }
   },
   "additionalProperties": false,
-  "required": ["buildTarget", "runner"]
+  "required": ["runner"]
 }

src/utils/normalize-cache.js

@@ -10,7 +10,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.normalizeCacheOptions = normalizeCacheOptions;
 const node_path_1 = require("node:path");
 /** Version placeholder is replaced during the build process with actual package version */
-const VERSION = '21.0.0-next.5+sha-3b7dabb';
+const VERSION = '21.0.0-next.5+sha-f263306';
 function hasCacheMetadata(value) {
     return (!!value &&
         typeof value === 'object' &&

uniqueId

@@ -1 +1 @@
-Thu Oct 02 2025 17:11:43 GMT+0000 (Coordinated Universal Time)
+Thu Oct 02 2025 18:25:45 GMT+0000 (Coordinated Universal Time)