2026-09-08 16:56:54 +02:00
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// The classic choo counter. This one module is the whole app, and both
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// sides consume it: the browser mounts it (import map resolves
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2026-09-08 19:55:20 +02:00
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// @uhhm/buuh-html to the DOM renderer), Node stringifies it (same specifier
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2026-09-08 16:56:54 +02:00
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// resolves to the string renderer). That's the isomorphic contract.
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2026-09-08 19:55:20 +02:00
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import choo from '@uhhm/buuh'
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import html from '@uhhm/buuh-html'
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2026-09-08 16:56:54 +02:00
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export default function createApp () {
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const app = choo()
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app.use(countStore)
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app.route('/', mainView)
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2026-09-08 17:57:27 +02:00
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// the demo gets served from arbitrary subpaths (npx serve ., test
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// servers); a wildcard fallback makes it mount anywhere
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app.route('*', mainView)
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2026-09-08 16:56:54 +02:00
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return app
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}
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function mainView (state, emit) {
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2026-09-08 19:39:25 +02:00
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emit(state.events.DOMTITLECHANGE, `count is ${state.count}`)
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2026-09-08 16:56:54 +02:00
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return html`
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<body>
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<h1>count is ${state.count}</h1>
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<button onclick=${onclick}>Increment</button>
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</body>
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`
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function onclick () {
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emit('increment', 1)
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}
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}
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function countStore (state, emitter) {
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state.count = state.count || 0
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emitter.on('increment', function (count) {
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state.count += count
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emitter.emit('render')
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})
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}
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