test+docs: full-app browser integration test and the isomorphic counter example

The integration test runs the counter through the real browser path in happy-dom: start(), store events, raf-batched morph, DOM click handlers, emit coalescing. examples/counter is the Phase 2 exit criterion: one app module mounted zero-build in a browser via import map and string-rendered by node examples/counter/render.js. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014NgfSjHE11oFpoSnLVKLXd
2026-09-08 16:56:54 +02:00
parent c696e00d4f
commit 870aa79668
5 changed files with 152 additions and 5 deletions
@@ -0,0 +1,35 @@
+// The classic choo counter. This one module is the whole app, and both
+// sides consume it: the browser mounts it (import map resolves
+// @choojs/html to the DOM renderer), Node stringifies it (same specifier
+// resolves to the string renderer). That's the isomorphic contract.
+
+import choo from '@choojs/core'
+import html from '@choojs/html'
+
+export default function createApp () {
+  const app = choo()
+  app.use(countStore)
+  app.route('/', mainView)
+  return app
+}
+
+function mainView (state, emit) {
+  return html`
+    <body>
+      <h1>count is ${state.count}</h1>
+      <button onclick=${onclick}>Increment</button>
+    </body>
+  `
+
+  function onclick () {
+    emit('increment', 1)
+  }
+}
+
+function countStore (state, emitter) {
+  state.count = state.count || 0
+  emitter.on('increment', function (count) {
+    state.count += count
+    emitter.emit('render')
+  })
+}