server.js

const Koa = require("koa");
const Router = require("@koa/router");
const https = require("https");
const fs = require("fs");
const next = require("next");

const config = require("./assets/json/config/common.json");

const host = process.env.HOST || "127.0.0.1";
const dev = process.env.NODE_ENV !== "production";
const app = next({dev});
const handle = app.getRequestHandler();

app.prepare().then(() => {
    const server = new Koa();
    const router = new Router();
    
    // koa router 9.0.0 or more
    router.all("(.*)", async (ctx) => {
        ctx.respond = false;
        await handle(ctx.req, ctx.res);
    });
    
    server.use(async (ctx, next) => {
        ctx.res.statusCode = 200;
        await next();
    });
    
    server.use(router.routes());

    try{
        const options = {
            key: fs.readFileSync("./private.key"),
            cert: fs.readFileSync("./certificate.crt"),
            ca: fs.readFileSync("./ca_bundle.crt")
        };
        
        server.listen(3000, host);
        
        https.createServer(options, server.callback()).listen(8888, host, () => {
            console.log("> Ready on http://localhost:3000");
            console.log("> Ready on https://localhost:8888");
            console.log(`> NEXT_PUBLIC_ENV: ${process.env.NEXT_PUBLIC_ENV}`);
            console.log(`> Version: ${config.version}`);
        });
    }
    catch(ex){
        server.listen(3000, host);
        console.log("> Ready on http://localhost:3000");
        console.log(`> NEXT_PUBLIC_ENV: ${process.env.NEXT_PUBLIC_ENV}`);
        console.log(`> Version: ${config.version}`);
    }
});