fix(@angular-devkit/build-angular): avoid native realpath in application builder

packages/angular_devkit/build_angular/src/builders/application/options.ts

@@ -8,6 +8,7 @@
 
 import { BuilderContext } from '@angular-devkit/architect';
 import type { Plugin } from 'esbuild';
+import { realpathSync } from 'node:fs';
 import { access, constants } from 'node:fs/promises';
 import { createRequire } from 'node:module';
 import path from 'node:path';
@@ -83,7 +84,17 @@ export async function normalizeOptions(
   options: ApplicationBuilderInternalOptions,
   plugins?: Plugin[],
 ) {
-  const workspaceRoot = context.workspaceRoot;
+  // If not explicitly set, default to the Node.js process argument
+  const preserveSymlinks =
+    options.preserveSymlinks ?? process.execArgv.includes('--preserve-symlinks');
+
+  // Setup base paths based on workspace root and project information
+  const workspaceRoot = preserveSymlinks
+    ? context.workspaceRoot
+    : // NOTE: promises.realpath should not be used here since it uses realpath.native which
+      // can cause case conversion and other undesirable behavior on Windows systems.
+      // ref: https://github.com/nodejs/node/issues/7726
+      realpathSync(context.workspaceRoot);
   const projectMetadata = await context.getProjectMetadata(projectName);
   const projectRoot = normalizeDirectoryPath(
     path.join(workspaceRoot, (projectMetadata.root as string | undefined) ?? ''),
@@ -258,7 +269,6 @@ export async function normalizeOptions(
     serviceWorker,
     poll,
     polyfills,
-    preserveSymlinks,
     statsJson,
     stylePreprocessorOptions,
     subresourceIntegrity,
@@ -289,8 +299,7 @@ export async function normalizeOptions(
     poll,
     progress,
     externalPackages,
-    // If not explicitly set, default to the Node.js process argument
-    preserveSymlinks: preserveSymlinks ?? process.execArgv.includes('--preserve-symlinks'),
+    preserveSymlinks,
     stylePreprocessorOptions,
     subresourceIntegrity,
     serverEntryPoint,

packages/angular_devkit/build_angular/src/tools/esbuild/angular/compiler-plugin.ts

@@ -16,7 +16,7 @@ import type {
   PluginBuild,
 } from 'esbuild';
 import assert from 'node:assert';
-import { realpath } from 'node:fs/promises';
+import { realpathSync } from 'node:fs';
 import * as path from 'node:path';
 import { maxWorkers } from '../../../utils/environment-options';
 import { JavaScriptTransformer } from '../javascript-transformer';
@@ -61,8 +61,11 @@ export function createCompilerPlugin(
       if (!preserveSymlinks) {
         // Use the real path of the tsconfig if not preserving symlinks.
         // This ensures the TS source file paths are based on the real path of the configuration.
+        // NOTE: promises.realpath should not be used here since it uses realpath.native which
+        // can cause case conversion and other undesirable behavior on Windows systems.
+        // ref: https://github.com/nodejs/node/issues/7726
         try {
-          tsconfigPath = await realpath(tsconfigPath);
+          tsconfigPath = realpathSync(tsconfigPath);
         } catch {}
       }