index.js

const express = require('express');
const dotenv = require('dotenv');
const cors = require('cors');
const connectDB = require('./config/db');
dotenv.config({ path: './config/config.env' });
connectDB();
const app = express();
app.use(cors());
app.use(express.json());
app.use('/api',require("./routes/auth"));
app.use('/api',require("./routes/list"));
app.use('/api',require("./routes/item"));
app.use('/api',require("./routes/category"));
if (process.env.NODE_ENV === 'production') {
  app.use(express.static('client/build'));
  app.get('*', (req, res) =>
    res.sendFile(path.resolve(__dirname, 'client', 'build', 'index.html'))
  );
}
// Server listening
const PORT = process.env.PORT || 5000;
app.listen(PORT, () =>
  console.log(
    `Your sample of MERN authentication is running at ${PORT} in ${process.env.NODE_ENV} environment`
  )
);