ESLint - 'process' is not defined

Question

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?

Answer 1

Thanks @FelixKling and @Jaromanda X for quick responses.

I have fixed this with following config for .eslintrc.json file-

{     "env": {         "node": true,         "commonjs": true     },     "extends": "eslint:recommended",     "rules": {         "indent": [             "error",             "tab"         ],         "linebreak-style": [             "error",             "unix"         ],         "quotes": [             "error",             "single"         ],         "semi": [             "error",             "always"         ]     },     "parserOptions": {         "ecmaVersion": 2015     } } 

When I got error I had "browser": true instead of "node": true. Simple mistake.

Answer 2

Adding "node": "true" to an existing list of environments will do the job, too

"env": {         "node": true,         "commonjs": true,         "browser": true,         "es6": true        }