text: const express = require("express");
  const logger = require("morgan");
  const mongoose = require("mongoose");
  const compression = require("compression");
  
  const PORT = process.env.PORT || 3000;
  
  const app = express();
  
  app.use(logger("dev"));
  
  app.use(compression());
  app.use(express.urlencoded({ extended: true }));
  app.use(express.json());
  
  app.use(express.static("public"));
  
  mongoose.connect(
      process.env.MONGODB_URI ||"mongodb://localhost/budget", 
      {
          useNewUrlParser: true,
          useUnifiedTopology: true,
          useCreateIndex: true,
          useFindAndModify: false
        }
      );
  
  // routes
  app.use(require("./routes/api.js"));
  
  app.listen(PORT, () => {
    console.log(`App running on port ${PORT}!`);
  });