dev.ts

// dev.js - don't commit this!!!
type Config = { mongoURI: string; cookieKey: string };

const config: Config = {
	mongoURI:
		"mogoUrl",
	cookieKey: "cookieKey",
};

export { config };

keys.ts

type Config = { mongoURI: string; cookieKey: string };

//key.js - figure out what set of credentials to return
const keys = async () => {
	let resConfig: Config;

	if (process.env.NODE_ENV === "production") {
		//we are in production - return the prod set of keys
		const { config } = await import("./dev");
		resConfig = config;
	} else {
		//we are in development - return the dev keys!!!
		const { config } = await import("./dev");
		resConfig = config;
	}

	return resConfig;
};

export { keys };

prod.ts

//prod.js - production keys here!!
type Config = { mongoURI: string; cookieKey: string };

const config: Config = {
	mongoURI: process.env.MONGO_URI,
	cookieKey: process.env.COOKIE_KEY,
};

export { config };

server.js

import express from "express";
import mongoose from "mongoose";
import cookieSession from "cookie-session";
import { json } from "body-parser";
import { keys } from "./config/keys";

require("./models/User");
require("./models/Survey");
require("./services/passport");

mongoose.connect(keys.mongoURI);

const app = express();

app.use(json());
app.use(
	cookieSession({
		maxAge: 30 * 24 * 60 * 60 * 1000,
		keys: [keys.cookieKey],
	})
);

require("./routes/authRoutes")(app);
require("./routes/billingRoutes")(app);
require("./routes/surveyRoutes")(app);

if (process.env.NODE_ENV === "production") {
	//Express will serve up production assets
	//like our main.js file, or main.css file!
	app.use(express.static("client/build"));

	//Express will serve up the index.html file
	//if it doesn't recognize the route
	const path = require("path");
	app.get("*", (req, res) => {
		res.sendFile(path.resolve(__dirname, "client", "build", "index.html"));
	});
}

const PORT = process.env.PORT || 5000;

app.listen(PORT);