From b20cece1745f3ee95a162c0f5455fa6f8a486e57 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Thu, 14 May 2026 10:16:35 -0400
Subject: [PATCH] fix(@angular/build): ignore virtual esbuild paths with
 (disabled):

Virtual files generated by esbuild for disabled browser fields leak into the
watch list, causing spurious rebuilds in watch mode.

Previously, only paths where the suffix was a Node.js builtin module were
ignored. Now, any path containing `(disabled):` is ignored as it represents
a virtual file that doesn't exist on disk.

Fixes #33160
---
 .../build/src/tools/esbuild/bundler-context.ts        | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/packages/angular/build/src/tools/esbuild/bundler-context.ts b/packages/angular/build/src/tools/esbuild/bundler-context.ts
index 308e3509acdb..968815a52fd5 100644
--- a/packages/angular/build/src/tools/esbuild/bundler-context.ts
+++ b/packages/angular/build/src/tools/esbuild/bundler-context.ts
@@ -13,12 +13,10 @@ import {
   BuildResult,
   Message,
   Metafile,
-  OutputFile,
   build,
   context,
 } from 'esbuild';
 import assert from 'node:assert';
-import { builtinModules } from 'node:module';
 import { basename, extname, join, relative } from 'node:path';
 import { SERVER_GENERATED_EXTERNALS } from '../../utils/server-rendering/manifest';
 import {
@@ -472,12 +470,9 @@ function isInternalBundlerFile(file: string) {
     return true;
   }
 
-  const DISABLED_BUILTIN = '(disabled):';
-
-  // Disabled node builtins such as "/some/path/(disabled):fs"
-  const disabledIndex = file.indexOf(DISABLED_BUILTIN);
-  if (disabledIndex >= 0) {
-    return builtinModules.includes(file.slice(disabledIndex + DISABLED_BUILTIN.length));
+  // Any (disabled): path is a virtual esbuild entry that doesn't exist on disk
+  if (file.includes('(disabled):')) {
+    return true;
   }
 
   return false;