Fixed getFnType logic

DigitalBrainJS · May 12, 2021 · ea9907d · ea9907d
1 parent 7e11616
commit ea9907d
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/lib/utils.js b/lib/utils.js
@@ -9,10 +9,11 @@ function isGeneratorFunction(thing) {
 }
 
 const getFnType = (thing) => typeof thing === 'function' && ({
-    GeneratorFunction: 'generator',
-    AsyncFunction: 'async',
-    Function: 'plain'
-})[thing.constructor.name];
+    '[object GeneratorFunction]': 'generator',
+    '[object AsyncFunction]': 'async',
+    '[object Function]': 'plain'
+})[Object.prototype.toString.call(thing)];
+
 
 function isGenerator(thing) {
     return thing && typeof thing === 'object' && typeof thing.next === 'function';