Setting "configFile" via vite.app.config.js is not working

[Smilefounder]

Hello all,

Is there any one tried to use configFile via Vite config and run properly?

import { sveltekit } from '@sveltejs/kit/vite';
import basicSsl from '@vitejs/plugin-basic-ssl';

/** @type {import('vite').UserConfig} */
const config = {
	plugins: [
		basicSsl(),
		sveltekit({
			configFile: 'my-svelte.config.js'
		})
	]
};

export default config;