changed proxy-polyfill to 0.1.6 as newer versions break on React Native. Added 'umd' libraryTarget for react native.

package.json

@@ -26,7 +26,7 @@
     "format": "prettier 'src/**/*.{js,json}' --write"
   },
   "dependencies": {
-    "proxy-polyfill": "^0.2.0",
+    "proxy-polyfill": "0.1.6",
     "reselect": "^3.0.0"
   },
   "devDependencies": {

webpack.config.js

@@ -8,6 +8,7 @@ module.exports = {
   output: {
     filename: 'bundle.js',
     path: path.resolve(__dirname, 'dist'),
+    libraryTarget: 'umd'
   },
   module: {
     rules: [