@couch-kit/cli

Developer tooling for Couch Kit.

Starter Project: See Buzz for a complete example that uses the CLI to bundle its web controller.

Installation

bun add -d @couch-kit/cli

Commands

init

Scaffolds a web controller project (Vite + React + TypeScript) to add to an existing host app. This creates only the phone/tablet side — for a full game project (host + client + shared), clone the Buzz starter.

bunx couch-kit init web-controller

bundle

Builds the web controller and copies the assets into your Android project's assets/www folder, along with a manifest.json listing all files. This manifest is used by useExtractAssets() on the host to extract assets at runtime.

# Default (looks for ./web-controller and copies to android/app/src/main/assets/www)
bunx couch-kit bundle

# Custom paths
bunx couch-kit bundle --source ./my-web-app --output ./android/app/src/main/assets/www

Output structure:

android/app/src/main/assets/www/
├── manifest.json       ← import this in your host app
├── index.html
├── assets/
│   └── ...

simulate

Spawns headless WebSocket bots to simulate players (useful for load testing and quick iteration).

# Default: 4 bots, ws://localhost:8082
bunx couch-kit simulate

# Custom host + count
bunx couch-kit simulate --url ws://192.168.1.99:8082 --count 8

# Action interval (ms)
bunx couch-kit simulate --interval 250

replay

Replays a recorded game session against a reducer, validating state transitions. Useful for debugging, regression testing, and reproducing bugs from recordings captured with useActionRecorder.

# Replay a recording against your reducer
bunx couch-kit replay ./session.json ./shared/reducer.ts

# With intermediate state snapshots
bunx couch-kit replay ./session.json ./shared/reducer.ts --snapshots

# JSON output (for piping to other tools)
bunx couch-kit replay ./session.json ./shared/reducer.ts --json

The reducer module must export a default or a named reducer function. If your shared file exports gameReducer, add a re-export:

// shared/reducer.ts (or any entry point for replay)
export { gameReducer as default } from "./types";

dev

Starts a Vite dev server on the LAN so phones can load the controller from your laptop during development.

# Default: port 5173, exposed to LAN
bunx couch-kit dev

# Custom port
bunx couch-kit dev --port 3000

Prints the LAN URL (e.g., http://192.168.1.50:5173) so you can pass it as devServerUrl to GameHostProvider. Requires vite as a dev dependency in your web controller project.