refactor(@angular/build): explicitly target worker script in i18n inliner task execution

Specify the worker target file directly in each task run option via #runWorkerTask rather than hardcoding a default filename during WorkerPool instantiation.

To prepare for ESM transition and avoid reliance on ambient require, createRequire is used to resolve the inliner worker script path. Explicitly specifying the worker file per task enables the inliner to run against general-purpose or shared worker pools that do not have a preconfigured default script.

Author: clydin

packages/angular/build/src/tools/esbuild/i18n-inliner.ts

@@ -8,6 +8,7 @@
 
 import type { ɵParsedTranslation } from '@angular/localize';
 import assert from 'node:assert';
+import { createRequire } from 'node:module';
 import { extname, join } from 'node:path';
 import { serialize } from 'node:v8';
 import { calculateHash, createContentHash, initializeHash } from '../../utils/hash';
@@ -22,6 +23,10 @@ import type {
 } from './i18n-inliner-worker';
 import { encodeTranslationToBuffer } from './i18n-translation-encoder';
 
+// TODO: Convert to import.meta usage during ESM transition
+const localRequire = createRequire(__filename);
+const INLINER_WORKER_PATH = localRequire.resolve('./i18n-inliner-worker');
+
 interface WorkerTaskMap {
   inlineFileBatch: {
     request: InlineFileBatchRequest;
@@ -187,7 +192,6 @@ export class I18nInliner {
     maxThreads?: number,
   ) {
     this.#workerPool = new WorkerPool({
-      filename: require.resolve('./i18n-inliner-worker'),
       maxThreads,
     });
   }
@@ -562,7 +566,10 @@ export class I18nInliner {
     name: T,
     request: WorkerTaskMap[T]['request'],
   ): Promise<WorkerTaskMap[T]['result']> {
-    return this.#workerPool.run(request, { name }) as Promise<WorkerTaskMap[T]['result']>;
+    return this.#workerPool.run(request, {
+      filename: INLINER_WORKER_PATH,
+      name,
+    }) as Promise<WorkerTaskMap[T]['result']>;
   }
 
   /**