From 1ffb171cfb2b61fa9a7a6c75a75f9a442f2dd713 Mon Sep 17 00:00:00 2001
From: Peter Pisljar <peter.pisljar@gmail.com>
Date: Tue, 11 Feb 2020 09:30:43 -0500
Subject: [PATCH] don't register a wrapper if browser side function exists.
 (#57196)

---
 src/plugins/expressions/public/plugin.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/expressions/public/plugin.ts b/src/plugins/expressions/public/plugin.ts
index 2ba10be76cd92..034be58ec9e35 100644
--- a/src/plugins/expressions/public/plugin.ts
+++ b/src/plugins/expressions/public/plugin.ts
@@ -163,6 +163,9 @@ export class ExpressionsPublicPlugin
           // function that matches its definition, but which simply
           // calls the server-side function endpoint.
           Object.keys(serverFunctionList).forEach(functionName => {
+            if (functions.get(functionName)) {
+              return;
+            }
             const fn = () => ({
               ...serverFunctionList[functionName],
               fn: (context: any, args: any) => {