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Andy Hanson · Andy Hanson · commit 8dbb8e7bf6ac · 2016-12-08T08:34:56.000-08:00
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
@@ -11,7 +11,7 @@ namespace ts {
     /** It's allowed to get/set into a map with numbers. However, when iterating, you may get strings back due to the shim being an ordinary object (which only allows string keys). */
     export type MapKey = string | number;
 
-    /** Minimal ES6 Map interface. */
+    /** Minimal ES6 Map interface. Does not include iterators as those are hard to shim performantly. */
     export interface Map<T> {
         get(key: MapKey): T;
         has(key: MapKey): boolean;
