require("dotenv").config(); const express = require("express"); const mongoose = require("mongoose"); const cors = require("cors"); // set up express const app = express(); app.use(express.json()); app.use(cors()); const PORT = process.env.PORT || 5000; app.listen(PORT, () => console.log(`The server has started on port: ${PORT}`)); // set up mongoose mongoose.connect( process.env.MONGODB_CONNECTION_STRING, { useNewUrlParser: true, useUnifiedTopology: true, useCreateIndex: true, }, (err) => { if (err) throw err; console.log("MongoDB connection established"); } ); // set up routes app.use("/users", require("./routes/userRouter"));