svelte-deployment

name	svelte-deployment
description	Svelte deployment guidance. Use for adapters, Vite config, pnpm setup, library authoring, PWA, or production builds.
metadata	{"last_updated":"2026-06-08","verified_against":"Svelte 5/Kit docs, sveltejs/kit#15934, SvelteKit Vite-plugin config post"}

Svelte Deployment

Quick Start

SvelteKit config: Prefer putting Kit options in vite.config.ts via sveltekit({ ... }). svelte.config.js is optional in Kit 2 and will not be read by Kit 3.

pnpm 10+: Add prepare script (postinstall disabled by default):

{
	"scripts": {
		"prepare": "svelte-kit sync"
	}
}

Vite config example:

// vite.config.ts
import { sveltekit } from '@sveltejs/kit/vite';
import adapter from '@sveltejs/adapter-vercel';
import { defineConfig } from 'vite';

export default defineConfig({
	plugins: [
		sveltekit({
			adapter: adapter(),
			compilerOptions: { experimental: { async: true } },
			experimental: { remoteFunctions: true }
		})
	]
});

Adapters

# Static site
pnpm add -D @sveltejs/adapter-static

# Node server
pnpm add -D @sveltejs/adapter-node

# Cloudflare
pnpm add -D @sveltejs/adapter-cloudflare

Reference Files

• library-authoring.md - Publishing Svelte packages
• pwa-setup.md - Offline-first with workbox
• cloudflare-gotchas.md - Streaming issues

Notes

• Cloudflare may strip Transfer-Encoding: chunked (breaks streaming)
• Library authors: include svelte in keywords AND peerDependencies
• Single-file bundle: kit.output.bundleStrategy: 'single'
• VS Code/svelte-check/SvelteKit can read Kit config from the Vite plugin via @sveltejs/load-config.
• Last verified: 2026-06-08