vite.config.js

import { defineConfig, loadEnv } from 'vite';
import mixPlugin from 'vite-plugin-mix';

const mix = mixPlugin.default;

export default defineConfig(({ command, mode }) => {
    Object.assign(process.env, loadEnv(mode, process.cwd(), ''));
    const { VITE_APP_PORT: port, APP_ENV } = process?.env;

    return {
        plugins: [
            mix({ handler: './server.js' })
        ],
        define: {
            __APP_ENV__: APP_ENV,
        },
        server: {
            port,
        },
        build: {
            // generate manifest.json in outDir
            manifest: true,
            modulePreload: {
                polyfill: false,
            },
            rollupOptions: {
                // overwrite default .html entry
                input: './main.js',
            },
        },
    };
});