vite-plugin-sveltekit-cf-websockets

[!CAUTION] This plugin was written fully by Claude Code. Expect that it might break or behave in unexpected ways if you have an unusual SvelteKit setup, or if your routes do something that it did not predict, or if today is a Tuesday.

This is not at all helped by the fact that the plugin touches SvelteKit internals. It can equally break because of an update to SvelteKit.

A Vite plugin to fix WebSocket upgrades in the dev server with SvelteKit when targeting Cloudflare Workers. Made to be used with ground0, but you may find that it works well enough for other use cases as well.

Usage

Simply add the plugin to your Vite config.

import { sveltekit } from '@sveltejs/kit/vite'
import svelteKitWebSockets from 'vite-plugin-sveltekit-cf-websockets'

export default defineConfig({
	plugins: [svelteKitWebSockets(), sveltekit()]
})

You can pass a verbose option to the plugin to get more detailed logging.

import { sveltekit } from '@sveltejs/kit/vite'
import svelteKitWebSockets from 'vite-plugin-sveltekit-cf-websockets'

export default defineConfig({
	plugins: [svelteKitWebSockets({ verbose: true }), sveltekit()]
})