Adds an app skeleton. Still needs some work.

config/async-component.js

@@ -0,0 +1,30 @@
+import { h, Component } from 'preact';
+
+export default function (req) {
+	function Async() {
+		Component.call(this);
+
+		let b, old;
+		this.componentWillMount = () => {
+			b = this.base = this.nextBase || this.__b; // short circuits 1st render
+			req(m => {
+				this.setState({ child: m.default || m });
+			});
+		};
+
+		this.shouldComponentUpdate = (_, nxt) => {
+			nxt = nxt.child === void 0;
+			if (nxt && old === void 0 && !!b) {
+				old = h(b.nodeName, { dangerouslySetInnerHTML: { __html: b.innerHTML } });
+			}
+			else {
+				old = ''; // dump it
+			}
+			return !nxt;
+		};
+
+		this.render = (p, s) => s.child ? h(s.child, p) : old;
+	}
+	(Async.prototype = new Component()).constructor = Async;
+	return Async;
+}