Running Locally

Cloudflare Workers

From a generated Cloudflare project:

pnpm install
pnpm run dev

pnpm run dev runs the template’s Wasm build script and then starts Wrangler. The default local URL is printed by Wrangler, normally http://localhost:8787.

After changing lib/app.rb, lib/consumer.rb, a Rust dependency, or package.json build configuration, stop and rerun pnpm run dev so the Wasm module is rebuilt.

Use pnpm start only when the Wasm output already exists and you intentionally want to start Wrangler without rebuilding.

The enable-external and queue variants require wasm-opt. They may also require valid KV, Durable Object, or Queue bindings in wrangler.jsonc.

Other templates

Generated commands differ by platform. Run uzumibi new and follow the “Next steps” printed by the CLI, then consult the generated configuration files.