iconv fix needed for non-SSR too to prevent warning

Author: ajones513

packages/react-scripts/config/webpack.config.js

@@ -345,6 +345,7 @@ module.exports = function(webpackEnv) {
       ],
     },
     module: {
+      noParse: /iconv-loader\.js$/, // https://github.com/webpack/webpack/issues/3078#issuecomment-400697407
       strictExportPresence: true,
       rules: [
         // Disable require.ensure as it's not a standard language feature.