From 3764a3155b80d22ebc6a08cac8d52e5df59ccd89 Mon Sep 17 00:00:00 2001
From: Alan Agius <alan.agius4@gmail.com>
Date: Thu, 20 May 2021 08:30:17 +0200
Subject: [PATCH] fix(@angular-devkit/build-angular): don't add
 `.hot-update.js` script tags

Closes #20855

(cherry picked from commit bea90a6130836c79bab5d64f94eb30ddfd5a12ff)
---
 .../plugins/index-html-webpack-plugin.ts        | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/packages/angular_devkit/build_angular/src/webpack/plugins/index-html-webpack-plugin.ts b/packages/angular_devkit/build_angular/src/webpack/plugins/index-html-webpack-plugin.ts
index 6a544a9ce378..112ec2784d33 100644
--- a/packages/angular_devkit/build_angular/src/webpack/plugins/index-html-webpack-plugin.ts
+++ b/packages/angular_devkit/build_angular/src/webpack/plugins/index-html-webpack-plugin.ts
@@ -58,13 +58,16 @@ export class IndexHtmlWebpackPlugin extends IndexHtmlGenerator {
 
       try {
         for (const [entryName, entrypoint] of this.compilation.entrypoints) {
-          const entryFiles: FileInfo[] = entrypoint?.getFiles()?.map(
-            (f: string): FileInfo => ({
-              name: entryName,
-              file: f,
-              extension: extname(f),
-            }),
-          );
+          const entryFiles: FileInfo[] = entrypoint
+            ?.getFiles()
+            ?.filter((f) => !f.endsWith('.hot-update.js'))
+            .map(
+              (f: string): FileInfo => ({
+                name: entryName,
+                file: f,
+                extension: extname(f),
+              }),
+            );
 
           if (!entryFiles) {
             continue;