fixup! fix(@angular/build): enhance build logs and output location for library builder

Author: alan-agius4

packages/angular/build/src/builders/library/builder.ts

@@ -148,16 +148,16 @@ export async function* executeLibraryBuilder(
       watcher,
       buildAction,
     );
+    if (isWatchMode && progress) {
+      logger.info('Watch mode enabled. Watching for file changes...');
+    }
+
     yield initialResult;
 
     if (!isWatchMode || !watcher) {
       return;
     }
 
-    if (progress) {
-      logger.info('Watch mode enabled. Watching for file changes...');
-    }
-
     yield* runWatchLoop(
       watcher,
       normalizedOptions,

packages/angular/build/src/builders/library/tests/behavior/build_spec.ts

@@ -173,7 +173,7 @@ describeLibraryBuilder(executeLibraryBuilder, LIBRARY_BUILDER_INFO, (harness) =>
         ...BASE_OPTIONS,
       });
 
-      const { result, logs } = await harness.executeOnce();
+      const { result, logs } = await harness.executeOnce({ outputLogsOnFailure: false });
       expect(result?.success).toBeFalse();
       expect(logs).toContain(
         jasmine.objectContaining({
@@ -189,5 +189,21 @@ describeLibraryBuilder(executeLibraryBuilder, LIBRARY_BUILDER_INFO, (harness) =>
         }),
       );
     });
+
+    it('should log watch mode enabled after initial build in watch mode', async () => {
+      harness.useTarget('build', {
+        ...BASE_OPTIONS,
+        watch: true,
+      });
+
+      const { result, logs } = await harness.executeOnce();
+      expect(result?.success).toBeTrue();
+      expect(logs).toContain(
+        jasmine.objectContaining({
+          level: 'info',
+          message: 'Watch mode enabled. Watching for file changes...',
+        }),
+      );
+    });
   });
 });