index.js

const express = require("express");
const app = express();
const port = 3000;
const programmingLanguagesRouter = require("./routes/programmingLanguages");
app.use(express.json());
app.use(
    express.urlencoded({
        extended: true,
    })
)
app.get("/", (req, res) => {
    res.json({ message: "ok" });
});
app.use('/programming-languages', programmingLanguagesRouter);
// Error handler middleware
app.use((err, req, res, next) => {
    const statusCode = err.statusCode || 500;
    console.error(err.message, err.stack);
    res.status(statusCode).json({ message: err.message});
    return;
});
app.listen(port, () => {
    console.log(`Server is Listening on PORT: ${port}`);
});