From facb5d8ffd4f6a81d3132515b8bae64278cf8316 Mon Sep 17 00:00:00 2001
From: Alan Agius <alan.agius4@gmail.com>
Date: Thu, 4 Nov 2021 18:35:58 +0100
Subject: [PATCH] fix(@angular-devkit/build-angular): don't show `[NG HMR]
 Unknown input type` when restoring file type input

(cherry picked from commit 3a89358d3318aa736637cea1cbdb55534d2b531b)
---
 .../build_angular/src/webpack/plugins/hmr/hmr-accept.ts       | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/angular_devkit/build_angular/src/webpack/plugins/hmr/hmr-accept.ts b/packages/angular_devkit/build_angular/src/webpack/plugins/hmr/hmr-accept.ts
index 8c05f6911cc8..ef0e5a7cd162 100644
--- a/packages/angular_devkit/build_angular/src/webpack/plugins/hmr/hmr-accept.ts
+++ b/packages/angular_devkit/build_angular/src/webpack/plugins/hmr/hmr-accept.ts
@@ -211,6 +211,10 @@ function restoreFormValues(oldInputs: any[], oldOptions: any[]): void {
         case 'week':
           newElement.value = oldElement.value;
           break;
+        case 'file':
+          // Ignored due: Uncaught DOMException: Failed to set the 'value' property on 'HTMLInputElement':
+          // This input element accepts a filename, which may only be programmatically set to the empty string.
+          break;
         default:
           console.warn('[NG HMR] Unknown input type ' + oldElement.type + '.');
           continue;