Merge pull request #155 from microsoft/fixSpreadArrayForNonConcatSpre…

…adables Fix __spreadArray for non-concat-spreadables
microsoft · Aug 11, 2021 · ffb6938 · ffb6938
2 parents 0b93014 + dc0616a
commit ffb6938
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/tslib.es6.js b/tslib.es6.js
@@ -169,7 +169,7 @@ export function __spreadArray(to, from, pack) {
             ar[i] = from[i];
         }
     }
-    return to.concat(ar || from);
+    return to.concat(ar || Array.prototype.slice.call(from));
 }
 
 export function __await(v) {

diff --git a/tslib.js b/tslib.js
@@ -210,7 +210,7 @@ var __createBinding;
                 ar[i] = from[i];
             }
         }
-        return to.concat(ar || from);
+        return to.concat(ar || Array.prototype.slice.call(from));
     };
 
     __await = function (v) {