From c5ca20f414f4a653c68e4ea1229c5bdac7a47d82 Mon Sep 17 00:00:00 2001
From: Alan <alan.agius@betssongroup.com>
Date: Fri, 1 Feb 2019 08:05:56 +0100
Subject: [PATCH] fix(@angular-devkit/build-angular): add missing open
 parenthesis in stacktrace

Fixes #13558
---
 .../build_angular/src/angular-cli-files/plugins/karma.ts        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts b/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts
index bdc4e2a04744..ea1d78aeeae9 100644
--- a/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts
+++ b/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts
@@ -285,7 +285,7 @@ const sourceMapReporter: any = function (this: any, baseReporterDecorator: any,
 
   muteDuplicateReporterLogging(this, config);
 
-  const urlRegexp = /\(http:\/\/localhost:\d+\/_karma_webpack_\/webpack:\//gi;
+  const urlRegexp = /http:\/\/localhost:\d+\/_karma_webpack_\/webpack:\//gi;
 
   this.onSpecComplete = function (_browser: any, result: any) {
     if (!result.success && result.log.length > 0) {