From a12c6d95651d9db9dded41bf5734777752a3a4e6 Mon Sep 17 00:00:00 2001
From: Alan Agius <17563226+alan-agius4@users.noreply.github.com>
Date: Fri, 11 Apr 2025 12:35:06 +0000
Subject: [PATCH] fix(@angular/build): include `module` value check when adding
 custom conditions
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Previously, when setting `module: preserve`—which internally sets `moduleResolution` to `bundler` in TypeScript—custom conditions were not applied. This change ensures that custom conditions are also added when `module` is set to `preserve`.
---
 .../build/src/tools/esbuild/angular/compiler-plugin.ts       | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/angular/build/src/tools/esbuild/angular/compiler-plugin.ts b/packages/angular/build/src/tools/esbuild/angular/compiler-plugin.ts
index c30bc4eab0c3..72131901ae94 100644
--- a/packages/angular/build/src/tools/esbuild/angular/compiler-plugin.ts
+++ b/packages/angular/build/src/tools/esbuild/angular/compiler-plugin.ts
@@ -698,7 +698,10 @@ function createCompilerOptionsTransformer(
 
     // Synchronize custom resolve conditions.
     // Set if using the supported bundler resolution mode (bundler is the default in new projects)
-    if (compilerOptions.moduleResolution === 100 /* ModuleResolutionKind.Bundler */) {
+    if (
+      compilerOptions.moduleResolution === 100 /* ModuleResolutionKind.Bundler */ ||
+      compilerOptions.module === 200 /** ModuleKind.Preserve */
+    ) {
       compilerOptions.customConditions = customConditions;
     }