From b1f7155a4c2a864ce060759bfac31ed309480c5d Mon Sep 17 00:00:00 2001
From: Alan Agius <17563226+alan-agius4@users.noreply.github.com>
Date: Thu, 22 May 2025 08:12:36 +0000
Subject: [PATCH] refactor(@angular/build): update `ensureWorkerPool` to do an
 early exit

The avoid unnecessary logic to be executed for every call to `transformFile`.
---
 .../build/src/tools/esbuild/javascript-transformer.ts       | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/angular/build/src/tools/esbuild/javascript-transformer.ts b/packages/angular/build/src/tools/esbuild/javascript-transformer.ts
index 8e2d8e31ab8f..b728a0f599e2 100644
--- a/packages/angular/build/src/tools/esbuild/javascript-transformer.ts
+++ b/packages/angular/build/src/tools/esbuild/javascript-transformer.ts
@@ -56,6 +56,10 @@ export class JavaScriptTransformer {
   }
 
   #ensureWorkerPool(): WorkerPool {
+    if (this.#workerPool) {
+      return this.#workerPool;
+    }
+
     const workerPoolOptions: WorkerPoolOptions = {
       filename: require.resolve('./javascript-transformer-worker'),
       maxThreads: this.maxThreads,
@@ -67,7 +71,7 @@ export class JavaScriptTransformer {
       workerPoolOptions.execArgv = filteredExecArgv;
     }
 
-    this.#workerPool ??= new WorkerPool(workerPoolOptions);
+    this.#workerPool = new WorkerPool(workerPoolOptions);
 
     return this.#workerPool;
   }