Build an app with Nuxt and Bun

Bun supports Nuxt with no extra configuration. Initialize a Nuxt app with the official nuxi CLI.

terminal

bunx nuxi init my-nuxt-app

✔ Which package manager would you like to use?
bun
◐ Installing dependencies...
bun install v1.3.3 (16b4bf34)
 + @nuxt/devtools@0.8.2
 + nuxt@3.7.0
 785 packages installed [2.67s]
✔ Installation completed.
✔ Types generated in .nuxt
✨ Nuxt project has been created with the v3 template. Next steps:
 › cd my-nuxt-app
 › Start development server with bun run dev

To start the dev server, run bun --bun run dev from the project root. This executes the nuxt dev command defined in the "dev" script in package.json.

The nuxt CLI uses Node.js by default; passing the --bun flag forces the dev server to use the Bun runtime instead.

terminal

cd my-nuxt-app
bun --bun run dev

nuxt dev
Nuxi 3.6.5
Nuxt 3.6.5 with Nitro 2.5.2
  > Local:    http://localhost:3000/
  > Network:  http://192.168.0.21:3000/
  > Network:  http://[fd8a:d31d:481c:4883:1c64:3d90:9f83:d8a2]:3000/

✔ Nuxt DevTools is enabled v0.8.0 (experimental)
ℹ Vite client warmed up in 547ms
✔ Nitro built in 244 ms

Once the dev server starts, open http://localhost:3000 to see the app. It renders Nuxt’s built-in NuxtWelcome template component. To start developing your app, replace <NuxtWelcome /> in app.vue with your own UI.

For production builds, the default preset is compatible with Bun, but the Bun preset generates better optimized builds.

nuxt.config.ts

export default defineNuxtConfig({
  nitro: {
    preset: "bun", 
  },
});

Alternatively, set the preset with an environment variable:

terminal

NITRO_PRESET=bun bun run build

Some packages provide Bun-specific exports that Nitro does not bundle correctly with the default preset. Use the Bun preset so those packages work in production builds.

After building, start the server:

terminal

bun run ./.output/server/index.mjs

Refer to the Nuxt website for complete documentation.