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---
name: Build an app with SvelteKit and Bun
---
Use `bunx` to scaffold your app with the `create-svelte` CLI. Answer the prompts to select a template and set up your development environment.
```sh
$ bunx create-svelte my-app
┌ Welcome to SvelteKit!
│
◇ Which Svelte app template?
│ SvelteKit demo app
│
◇ Add type checking with TypeScript?
│ Yes, using TypeScript syntax
│
◇ Select additional options (use arrow keys/space bar)
│ None
│
└ Your project is ready!
✔ Typescript
Inside Svelte components, use <script lang="ts">
Install community-maintained integrations:
https://github.com/svelte-add/svelte-add
```
---
Once the project is initialized, `cd` into the new project and install dependencies.
```sh
$ cd my-app
$ bun install
```
---
Then start the development server with `bun --bun run dev`.
To run the dev server with Node.js instead of Bun, you can omit the `--bun` flag.
```sh
$ bun --bun run dev
$ vite dev
Forced re-optimization of dependencies
VITE v4.4.9 ready in 895 ms
➜ Local: http://localhost:5173/
➜ Network: use --host to expose
➜ press h to show help
```
---
Visit [http://localhost:5173](http://localhost:5173/) in a browser to see the template app.
{% image src="https://github.com/oven-sh/bun/assets/3084745/7c76eae8-78f9-44fa-9f15-1bd3ca1a47c0" /%}
---
If you edit and save `src/routes/+page.svelte`, you should see your changes hot-reloaded in the browser.
---
To build for production, you'll need to add the right SvelteKit adapter. Currently we recommend the
`bun add -D svelte-adapter-bun`.
Now, make the following changes to your `svelte.config.js`.
```ts
- import adapter from "@sveltejs/adapter-auto";
+ import adapter from "svelte-adapter-bun";
import { vitePreprocess } from "@sveltejs/kit/vite";
/** @type {import('@sveltejs/kit').Config} */
const config = {
kit: {
adapter: adapter(),
},
preprocess: vitePreprocess(),
};
export default config;
```
---
To build a production bundle:
```sh
$ bun run build
$ vite build
vite v4.4.9 building SSR bundle for production...
transforming (60) node_modules/@sveltejs/kit/src/utils/escape.js
✓ 98 modules transformed.
Generated an empty chunk: "entries/endpoints/waitlist/_server.ts".
vite v4.4.9 building for production...
✓ 92 modules transformed.
Generated an empty chunk: "7".
.svelte-kit/output/client/_app/version.json 0.03 kB │ gzip: 0.05 kB
...
.svelte-kit/output/server/index.js 86.47 kB
Run npm run preview to preview your production build locally.
> Using svelte-adapter-bun
✔ Start server with: bun ./build/index.js
✔ done
✓ built in 7.81s
```
|
