fix(toArray): do not mutate array per subscription (#3335)

ReactiveX · Mar 8, 2018 · e2cd3a2 · e2cd3a2
1 parent 7d900a1
commit e2cd3a2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/operators/toArray.ts b/src/operators/toArray.ts
@@ -2,6 +2,9 @@ import { reduce } from './reduce';
 import { OperatorFunction } from '../interfaces';
 
 function toArrayReducer<T>(arr: T[], item: T, index: number) {
+  if (index === 0) {
+    return [item];
+  }
   arr.push(item);
   return arr;
 }