Added web support to legacy test

Author: EvanBacon

Diff for: .gitignore

@@ -47,3 +47,5 @@ buck-out/
 
 # Editor config
 .vscode
+.expo
+/web-build

Diff for: app.json

@@ -0,0 +1,5 @@
+{
+  "expo": {
+    "entryPoint": "./example/index"
+  }
+}

Diff for: example/index.js

@@ -8,8 +8,13 @@
  * @flow
  */
 
-import {AppRegistry} from 'react-native';
+import {AppRegistry, Platform} from 'react-native';
 import App from './App';
 import {name as appName} from './app.json';
 
 AppRegistry.registerComponent(appName, () => App);
+
+if (Platform.OS === 'web') {
+  const rootTag = document.getElementById('root');
+  AppRegistry.runApplication(appName, {rootTag});
+}

Diff for: package.json

@@ -5,7 +5,9 @@
   "types": "./types/index.d.ts",
   "main": "./lib/index.js",
   "author": "Krzysztof Borowy <[email protected]>",
-  "contributors": [],
+  "contributors": [
+    "Evan Bacon <[email protected]> (https://github.com/evanbacon)"
+  ],
   "homepage": "https://github.com/react-native-community/react-native-async-storage#readme",
   "license": "MIT",
   "keywords": [
@@ -23,6 +25,7 @@
     "start": "node node_modules/react-native/local-cli/cli.js start",
     "start:android": "react-native run-android --root example/",
     "start:ios": "react-native run-ios --project-path example/ios --scheme AsyncStorageExample",
+    "start:web": "expo start:web",
     "start:macos": "node node_modules/react-native-macos/local-cli/cli.js start --use-react-native-macos",
     "build:e2e:ios": "detox build -c ios",
     "build:e2e:android": "detox build -c android",
@@ -38,19 +41,25 @@
     "react": "^16.8",
     "react-native": ">=0.59"
   },
+  "dependencies": {
+    "deep-assign": "^3.0.0"
+  },
   "devDependencies": {
     "@babel/core": "7.4.5",
     "@babel/runtime": "7.4.5",
     "@react-native-community/eslint-config": "0.0.2",
     "babel-jest": "24.8.0",
     "babel-plugin-module-resolver": "3.1.3",
     "detox": "12.6.1",
+    "expo": "36.0.2",
     "eslint": "5.1.0",
     "flow-bin": "0.92.0",
     "jest": "24.8.0",
     "metro-react-native-babel-preset": "0.54.1",
     "react": "16.6.3",
+    "react-dom": "16.6.3",
     "react-native": "0.59.10",
+    "react-native-web": "~0.12.0",
     "react-native-macos": "0.60.0-microsoft.50",
     "react-test-renderer": "16.8.3"
   },