From 9e65f02d9d9e3527e07ba7add79773b1a0640a6a Mon Sep 17 00:00:00 2001
From: Deepak Kothandan <deepak.kdy@gmail.com>
Date: Sat, 2 Jun 2018 12:58:54 +0200
Subject: [PATCH] fix(utils): gulp dev dependencies and update util/index

rever package.json
---
 src/util/index.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/util/index.ts b/src/util/index.ts
index 5338c651d7..9604be53fe 100644
--- a/src/util/index.ts
+++ b/src/util/index.ts
@@ -29,7 +29,9 @@ import chalk from "chalk"
 import hasAnsi = require("has-ansi")
 
 // shim to allow async generator functions
-(<any>Symbol).asyncIterator = (<any>Symbol).asyncIterator || Symbol.for("Symbol.asyncIterator")
+if (typeof (Symbol as any).asyncIterator === "undefined") {
+  (Symbol as any).asyncIterator = Symbol("asyncIterator")
+}
 
 export type HookCallback = (callback?: () => void) => void