I am using ESLinter for a simple node project. Below is the only code I have in index.js:

const express = require('express');
const app = express();

app.get('/', (req, res) => {
    res.send({
        hi: 'there'
    });
});

const PORT = process.env.PORT || 5000;
app.listen(PORT);

I am using VSCode editor. It automatically runs ESLint for JS code.

In the IDE, I see below error for last but one line -

[eslint] 'process' is not defined. (no-undef)

Any Idea what's wrong?