# choo v8 — branch notes

This branch is the working tree for the v8 modernization effort. The v7 code
at the repo root is untouched and stays authoritative until 8.0.0 ships;
everything new lives under `packages/`.

## Layout

- `packages/core` — `@choojs/core`: the Choo class, same API as choo v7
  (`use`/`route`/`start`/`mount`/`toString`/`emit`), ported to ESM. The
  nano* internals are consolidated into `lib/` as attributed ports:
  - `lib/bus.js` ← nanobus 4.5.0
  - `lib/router.js` ← nanorouter 4.0.0 + wayfarer 7.0.1 (+ trie)
  - `lib/cache.js` ← choo component/cache.js + nanolru 1.0.0
  - `lib/raf.js` ← nanoraf 3.1.0, `lib/href.js` ← nanohref 3.1.0
  - `lib/timing.js` ← nanotiming 7.3.1 (unified on global `performance`)
  - `lib/dom.js` ← document-ready 2.0.1 + scroll-to-anchor 1.0.0
  - `lib/query.js` — nanoquery replaced by `URLSearchParams`
- `packages/html` — `@choojs/html`: the rendering package.
  - `server.js` — server-side tagged template (← nanohtml 1.10.0 server,
    transform branches removed; pure runtime)
  - `morph.js` — ← nanomorph 5.4.3, consolidated to one module
  - `browser.js` — **Phase 2**: runtime-only cached template tag (WeakMap
    keyed on the template strings array, clone-based instantiation,
    hydration that adopts server DOM). Throws until implemented.
  - `raw.js` — mark pre-encoded strings

## Status vs the modernization plan

- [x] Phase 1: monorepo scaffold, ESM ports, choo v7 node test suite green
      on `node --test` (Node ≥ 24), CI on GitHub Actions
- [ ] Phase 2: browser renderer rewrite + hydration, `@choojs/component`
- [ ] Phase 3: v8 wiring (`toStream`, devtools, codemod)
- [ ] Phase 4: bankai v10 (Vite 8/Rolldown shell, SSR middleware,
      103 Early Hints, service worker, precompression)
- [ ] Phase 5: docs, examples, launch

## Deliberate changes from v7

- `choo()` still works without `new`; `Choo` is also a named export.
- nanoquery → `URLSearchParams` (same output shape, repeated keys → arrays).
- Assertions live in `lib/assert.js` so production builds can strip them.
- Everything targets Node ≥ 24 and Baseline Widely Available browsers; there
  is no compile step and no transpilation anywhere.

## Attribution

All ported modules are MIT-licensed work by the original choojs/nano*
authors and contributors; per-file headers note the source package and
version. This branch exists to carry that work forward, not to replace it.