From 25dc80c6861efa6269f0e80402c4651bdf61561d Mon Sep 17 00:00:00 2001
From: Tal Rofe <100444463+tal-rofe@users.noreply.github.com>
Date: Mon, 25 Apr 2022 14:18:06 +0300
Subject: [PATCH] fix: fix the "isFunction" utility to match both
 "asyncFunction"s and "Function"s (#927)

current behavior is the utility tries to match only "Function" and therefore "AsyncFunction" will be
considered bad and error will be thrown

fix #926
---
 src/common/util.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/common/util.js b/src/common/util.js
index 8f3f1cd3..a9e59e3f 100644
--- a/src/common/util.js
+++ b/src/common/util.js
@@ -38,7 +38,8 @@ function isFunction (functionToCheck) {
     return false;
   } else {
     var getType = {};
-    return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+    var functionType = getType.toString.call(functionToCheck);
+    return functionToCheck && (functionType === '[object Function]' || functionType === '[object AsyncFunction]');
   }
 }