fix(@angular/build): update vitest to 4.0.6 and remove coverage workaround

Upgrades Vitest and @vitest/coverage-v8 dependencies to version 4.0.6.

This update allows for the removal of a temporary workaround that augmented `BaseCoverageProvider.prototype.isIncluded` in `executor.ts`. The issue with direct filesystem checks in Vitest's coverage provider has been resolved in version 4.0.6, simplifying the code and relying on the official library's implementation.

Author: clydin

modules/testing/builder/package.json

@@ -4,9 +4,9 @@
     "@angular-devkit/architect": "workspace:*",
     "@angular/ssr": "workspace:*",
     "@angular-devkit/build-angular": "workspace:*",
-    "@vitest/coverage-v8": "4.0.4",
+    "@vitest/coverage-v8": "4.0.6",
     "jsdom": "27.0.1",
     "rxjs": "7.8.2",
-    "vitest": "4.0.4"
+    "vitest": "4.0.6"
   }
 }

packages/angular/build/package.json

@@ -56,7 +56,7 @@
     "ng-packagr": "21.0.0-rc.0",
     "postcss": "8.5.6",
     "rxjs": "7.8.2",
-    "vitest": "4.0.4"
+    "vitest": "4.0.6"
   },
   "peerDependencies": {
     "@angular/core": "0.0.0-ANGULAR-FW-PEER-DEP",
@@ -74,7 +74,7 @@
     "tailwindcss": "^2.0.0 || ^3.0.0 || ^4.0.0",
     "tslib": "^2.3.0",
     "typescript": ">=5.9 <6.0",
-    "vitest": "^4.0.0"
+    "vitest": "^4.0.6"
   },
   "peerDependenciesMeta": {
     "@angular/core": {

packages/angular/build/src/builders/unit-test/runners/vitest/executor.ts

@@ -143,9 +143,7 @@ export class VitestExecutor implements TestExecutor {
     } = this.options;
 
     let vitestNodeModule;
-    let vitestCoverageModule;
     try {
-      vitestCoverageModule = await import('vitest/coverage');
       vitestNodeModule = await import('vitest/node');
     } catch (error: unknown) {
       assertIsError(error);
@@ -158,21 +156,6 @@ export class VitestExecutor implements TestExecutor {
     }
     const { startVitest } = vitestNodeModule;
 
-    // Augment BaseCoverageProvider to include logic to support the built virtual files.
-    // Temporary workaround to avoid the direct filesystem checks in the base provider that
-    // were introduced in v4. Also ensures that all built virtual files are available.
-    const builtVirtualFiles = this.buildResultFiles;
-    vitestCoverageModule.BaseCoverageProvider.prototype.isIncluded = function (filename) {
-      const relativeFilename = path.relative(workspaceRoot, filename);
-      if (!this.options.include || builtVirtualFiles.has(relativeFilename)) {
-        return !isMatch(relativeFilename, this.options.exclude);
-      } else {
-        return isMatch(relativeFilename, this.options.include, {
-          ignore: this.options.exclude,
-        });
-      }
-    };
-
     // Setup vitest browser options if configured
     const browserOptions = await setupBrowserConfiguration(
       browsers,

pnpm-lock.yaml

@@ -3,7 +3,7 @@ import { updateJsonFile } from './project';
 
 /** Updates the `test` builder in the current workspace to use Vitest. */
 export async function applyVitestBuilder(): Promise<void> {
-  await silentNpm('install', 'vitest@4.0.0', 'jsdom@27.0.0', '--save-dev');
+  await silentNpm('install', 'vitest@4.0.6', 'jsdom@27.0.0', '--save-dev');
 
   await updateJsonFile('angular.json', (json) => {
     const projects = Object.values(json['projects']);