Merge pull request #238 from tejaede/bugs/symbol-ie11

Adjust Symbol null check in shim-array
montagejs · Apr 15, 2020 · 97e3536 · 97e3536
2 parents e3a889e + bfda0f6
commit 97e3536
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/shim-array.js b/shim-array.js
@@ -25,8 +25,9 @@ if (Object.freeze) {
 
 Array.nativeFrom = Array.from;
 
+var isSymbolDefined = typeof Symbol !== "undefined";
 Array.from = function (values, mapFn, thisArg) {
-    if(Symbol && values && typeof values[Symbol.iterator] === "function") {
+    if (isSymbolDefined && values && typeof values[Symbol.iterator] === "function") {
         return Array.nativeFrom(values, mapFn, thisArg);
     }
     //Now we add support for values that implement forEach: