noctbot/web/src/server.ts

// @ts-ignore -- generated package
import "./environment";
import * as sapper from "@sapper/server"; // eslint-disable-line import/no-unresolved
import compression from "compression";
import express, { Express } from "express";
// @ts-ignore -- doesn't package its own types until 1.0.0-next.6
import sirv from "sirv";

const PORT = process.env.PORT; // eslint-disable-line prefer-destructuring
// @ts-ignore -- creates a warning after `rollup-plugin-replace` (set up in `rollup.config.js`)
// replaces `process.env.NODE_ENV` with `"production"` during `prod`
const dev = process.env.NODE_ENV === "development";

const createSapperServer = async (): Promise<Express> => {
    const app = express();

    app.use(
        compression({ threshold: 0 }),
        sirv("static", { dev }),
        sapper.middleware(),
    );

    return app;
};

createSapperServer().then((app) => {
	app.listen(PORT, (err?: any): void => { // eslint-disable-line
        if (err) console.log("error", err);
    });
});

export { sapper };