refactor(@angular-devkit/build-angular): update deleteOutputDir to use FS promise APIs

As per commit title.

(cherry picked from commit 2b5409b)

Author: alan-agius4

packages/angular_devkit/build_angular/src/builders/browser/index.ts

@@ -107,7 +107,7 @@ async function initialize(
   }
 
   if (options.deleteOutputPath) {
-    deleteOutputDir(context.workspaceRoot, originalOutputPath);
+    await deleteOutputDir(context.workspaceRoot, originalOutputPath);
   }
 
   return { config: transformedConfig || config, projectRoot, projectSourceRoot, i18n };

packages/angular_devkit/build_angular/src/builders/server/index.ts

@@ -217,7 +217,7 @@ async function initialize(
     );
 
   if (options.deleteOutputPath) {
-    deleteOutputDir(context.workspaceRoot, originalOutputPath);
+    await deleteOutputDir(context.workspaceRoot, originalOutputPath);
   }
 
   const transformedConfig = (await webpackConfigurationTransform?.(config)) ?? config;

packages/angular_devkit/build_angular/src/utils/delete-output-dir.ts

@@ -6,13 +6,13 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import * as fs from 'fs';
-import { join, resolve } from 'path';
+import { readdir, rm } from 'node:fs/promises';
+import { join, resolve } from 'node:path';
 
 /**
  * Delete an output directory, but error out if it's the root of the project.
  */
-export function deleteOutputDir(root: string, outputPath: string): void {
+export async function deleteOutputDir(root: string, outputPath: string): Promise<void> {
   const resolvedOutputPath = resolve(root, outputPath);
   if (resolvedOutputPath === root) {
     throw new Error('Output path MUST not be project root directory!');
@@ -22,7 +22,7 @@ export function deleteOutputDir(root: string, outputPath: string): void {
   // directory is mounted or symlinked. Instead the contents are removed.
   let entries;
   try {
-    entries = fs.readdirSync(resolvedOutputPath);
+    entries = await readdir(resolvedOutputPath);
   } catch (error) {
     if (error instanceof Error && 'code' in error && error.code === 'ENOENT') {
       return;
@@ -31,6 +31,6 @@ export function deleteOutputDir(root: string, outputPath: string): void {
   }
 
   for (const entry of entries) {
-    fs.rmSync(join(resolvedOutputPath, entry), { force: true, recursive: true, maxRetries: 3 });
+    await rm(join(resolvedOutputPath, entry), { force: true, recursive: true, maxRetries: 3 });
   }
 }