Add setImmediate polyfill to web, fixing dropdown items

index.js

@@ -2,6 +2,7 @@
  * @format
  */
 
+import 'platform/polyfills'
 import {AppRegistry} from 'react-native'
 import App from './src/App'
 import {name as appName} from './src/app.json'

index.web.js

@@ -1,5 +1,6 @@
 // index.web.js
 
+import 'platform/polyfills'
 import {AppRegistry} from 'react-native'
 import App from './src/App'
 import {name as appName} from './src/app.json'

src/platform/polyfills.native.ts

@@ -1 +0,0 @@
-import '@zxing/text-encoding' // TextEncoder / TextDecoder

src/platform/polyfills.ts

@@ -1,2 +1 @@
-// do nothing
 export {}

src/platform/polyfills.web.ts

@@ -0,0 +1,4 @@
+/// <reference lib="dom" />
+
+// @ts-ignore whatever typescript wants to complain about here, I dont care about -prf
+window.setImmediate = (cb: () => void) => setTimeout(cb, 0)