From a3a8f6e90ccbdd49dccabfc6adde897c5b4c2569 Mon Sep 17 00:00:00 2001
From: 4gray <serega05@gmail.com>
Date: Sun, 26 Jul 2026 23:25:09 +0200
Subject: [PATCH] fix(perf): optimize benchmark worker builds

---
 .../performance-build-config.spec.ts          | 23 ++++++++++++++++++-
 apps/electron-backend/build-worker.js         | 12 +++++++---
 apps/electron-backend/project.json            |  9 +++++++-
 docs/architecture/m3u-playlist-module.md      |  4 +++-
 4 files changed, 42 insertions(+), 6 deletions(-)

diff --git a/apps/electron-backend-e2e/src/performance/performance-build-config.spec.ts b/apps/electron-backend-e2e/src/performance/performance-build-config.spec.ts
index dd2ddf7e6..c854a5568 100644
--- a/apps/electron-backend-e2e/src/performance/performance-build-config.spec.ts
+++ b/apps/electron-backend-e2e/src/performance/performance-build-config.spec.ts
@@ -197,7 +197,7 @@ test('the Electron performance wrapper owns build dependencies before its profil
     assert.ok(target, 'electron-backend must define build-performance');
     assert.equal(target.executor, 'nx:run-commands');
     assert.deepEqual(target.dependsOn, [
-        'electron-backend:build-worker',
+        'electron-backend:build-worker-performance',
         'electron-backend:build-embedded-mpv',
         {
             projects: ['web', 'remote-control-web'],
@@ -210,6 +210,27 @@ test('the Electron performance wrapper owns build dependencies before its profil
     );
 });
 
+test('the Electron performance wrapper builds optimized source-mapped workers', () => {
+    const target = electronProject.targets['build-worker-performance'];
+    const source = readFileSync(
+        join(workspaceRoot, 'apps/electron-backend/build-worker.js'),
+        'utf8'
+    );
+
+    assert.ok(target, 'electron-backend must define build-worker-performance');
+    assert.equal(target.executor, 'nx:run-commands');
+    assert.equal(
+        target.options?.['command'],
+        'node apps/electron-backend/build-worker.js --performance'
+    );
+    assert.match(
+        source,
+        /const isPerformance = process\.argv\.includes\('--performance'\)/
+    );
+    assert.match(source, /minify: isProduction \|\| isPerformance/);
+    assert.match(source, /sourcemap: isPerformance \|\| !isProduction/);
+});
+
 test('the cancellation benchmark uses the production-equivalent performance build', () => {
     const target = e2eProject.targets['benchmark-m3u-refresh-cancellation'];
 
diff --git a/apps/electron-backend/build-worker.js b/apps/electron-backend/build-worker.js
index a80817272..649391365 100644
--- a/apps/electron-backend/build-worker.js
+++ b/apps/electron-backend/build-worker.js
@@ -18,6 +18,12 @@ const nativeModules = [
 ];
 
 const isProduction = process.env.NODE_ENV === 'production';
+const isPerformance = process.argv.includes('--performance');
+const buildMode = isPerformance
+    ? 'performance'
+    : isProduction
+      ? 'production'
+      : 'development';
 
 async function buildWorker() {
     try {
@@ -59,7 +65,7 @@ async function buildWorker() {
 
         for (const worker of workers) {
             console.log(
-                `Building ${worker.label} with esbuild (${isProduction ? 'production' : 'development'})...`
+                `Building ${worker.label} with esbuild (${buildMode})...`
             );
 
             await esbuild.build({
@@ -74,8 +80,8 @@ async function buildWorker() {
                     ...nodeBuiltins,
                     ...nativeModules,
                 ],
-                sourcemap: !isProduction,
-                minify: isProduction,
+                sourcemap: isPerformance || !isProduction,
+                minify: isProduction || isPerformance,
                 alias: {
                     '@iptvnator/shared/interfaces': path.join(
                         __dirname,
diff --git a/apps/electron-backend/project.json b/apps/electron-backend/project.json
index 37b1e7e07..6e4107999 100644
--- a/apps/electron-backend/project.json
+++ b/apps/electron-backend/project.json
@@ -12,6 +12,13 @@
                 "command": "node apps/electron-backend/build-worker.js"
             }
         },
+        "build-worker-performance": {
+            "executor": "nx:run-commands",
+            "outputs": ["{workspaceRoot}/dist/apps/electron-backend/workers"],
+            "options": {
+                "command": "node apps/electron-backend/build-worker.js --performance"
+            }
+        },
         "build-embedded-mpv": {
             "executor": "nx:run-commands",
             "cache": false,
@@ -98,7 +105,7 @@
         },
         "build-performance": {
             "dependsOn": [
-                "electron-backend:build-worker",
+                "electron-backend:build-worker-performance",
                 "electron-backend:build-embedded-mpv",
                 {
                     "projects": ["web", "remote-control-web"],
diff --git a/docs/architecture/m3u-playlist-module.md b/docs/architecture/m3u-playlist-module.md
index 855da02a3..09aef8f12 100644
--- a/docs/architecture/m3u-playlist-module.md
+++ b/docs/architecture/m3u-playlist-module.md
@@ -121,7 +121,9 @@ before/after claims.
 
 The target reserves and verifies CDP port 9222, freezes renderer long-task,
 frame-gap, and heartbeat probes before forced post-GC heap collection, and
-enables opt-in worker profiling. Each worker response retains a raw
+builds the Electron main process, renderer, and workers with optimized,
+source-mapped performance configurations before enabling opt-in worker
+profiling. Each worker response retains a raw
 request-scoped record containing request/operation identity, received/work/flush
 timestamps, thread CPU, event-loop utilization, event-loop delay, and fixed
 unavailability or invalid reasons. Missing or malformed profiling metadata