From 3f38abce8a82eedd5a6761d4c1dd5d91a42ae011 Mon Sep 17 00:00:00 2001
From: Daniel Dyla <dyladan@users.noreply.github.com>
Date: Wed, 18 Mar 2020 15:40:21 -0400
Subject: [PATCH] chore: do not mangle  in stack context manager

---
 packages/opentelemetry-web/src/StackContextManager.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/opentelemetry-web/src/StackContextManager.ts b/packages/opentelemetry-web/src/StackContextManager.ts
index a8a7d9019b..b1ec44b284 100644
--- a/packages/opentelemetry-web/src/StackContextManager.ts
+++ b/packages/opentelemetry-web/src/StackContextManager.ts
@@ -42,8 +42,8 @@ export class StackContextManager implements ContextManager {
     context = Context.ROOT_CONTEXT
   ): T {
     const manager = this;
-    const contextWrapper = function(...args: unknown[]) {
-      return manager.with(context, () => target.apply(context, args));
+    const contextWrapper = function(this: any, ...args: any[]) {
+      return manager.with(context, () => target.apply(this, args));
     };
     Object.defineProperty(contextWrapper, 'length', {
       enumerable: false,
@@ -112,7 +112,7 @@ export class StackContextManager implements ContextManager {
     this._currentContext = context || Context.ROOT_CONTEXT;
 
     try {
-      return fn.apply(context);
+      return fn();
     } catch (err) {
       throw err;
     } finally {