From 3a3a9b1e8707171aa3cdfa5af6a3c553821e5f11 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Wed, 30 Apr 2025 10:54:21 -0400
Subject: [PATCH] fix(@schematics/angular): avoid empty polyfill option for new
 zoneless application

To reduce the size of the initial `angular.json` for applications, newly
generated zoneless applications will no longer contain an explicit empty
`polyfills` option. The option can still be added and is available for use
if needed by an application but the empty array value will no longer be
present when generating a zoneless application.
This has no effect for applications using Zone.js (default).
---
 packages/schematics/angular/application/index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/schematics/angular/application/index.ts b/packages/schematics/angular/application/index.ts
index e84c5ba7a121..5e9f379aed5e 100644
--- a/packages/schematics/angular/application/index.ts
+++ b/packages/schematics/angular/application/index.ts
@@ -258,7 +258,7 @@ function addAppToWorkspaceFile(
         options: {
           index: `${sourceRoot}/index.html`,
           browser: `${sourceRoot}/main.ts`,
-          polyfills: options.zoneless ? [] : ['zone.js'],
+          polyfills: options.zoneless ? undefined : ['zone.js'],
           tsConfig: `${projectRoot}tsconfig.app.json`,
           inlineStyleLanguage,
           assets: [{ 'glob': '**/*', 'input': `${projectRoot}public` }],
@@ -297,7 +297,7 @@ function addAppToWorkspaceFile(
         : {
             builder: Builders.BuildKarma,
             options: {
-              polyfills: options.zoneless ? [] : ['zone.js', 'zone.js/testing'],
+              polyfills: options.zoneless ? undefined : ['zone.js', 'zone.js/testing'],
               tsConfig: `${projectRoot}tsconfig.spec.json`,
               inlineStyleLanguage,
               assets: [{ 'glob': '**/*', 'input': `${projectRoot}public` }],