flowtyped everything, some functional, safety, and structural changes

UI/pages/testrpc.js

@@ -0,0 +1,24 @@
+import * as React from 'react'
+import RPC from '../config/rpc'
+
+export default class TestRPC extends React.Component {
+  static async getInitialProps (ctx) {
+    return {
+      // hello: await RPC.hello('world')
+    }
+  }
+
+  componentDidMount () {
+    window.$RPC = RPC
+  }
+
+  componentDidCatch (error, errorInfo) {
+    if (error) {
+      console.log(error, errorInfo)
+    }
+  }
+
+  render () {
+    return <div>hello, { this.props.hello }</div>
+  }
+}