process.env.SOME_KEY is undefined

Question

How do I set the value of process.env.SOME_KEY=some value in the operating system and then read it in my node application? I am running on Windows.

I tried these steps:

SET SOME_KEY=abc 
npm start

But when I try to read process.env.SOME_KEY, I am getting "undefined".

How do I set a env value and how do i read that in my code?

You can use cross-env - https://www.npmjs.com/package/cross-env — Faizuddin Mohammed, Feb 22 '18 at 16:50
I just tried this and it worked fine for me. Two things to try are (1) console.log(process.env) will show you all environment variables and (2) post your node code here so we can see exactly what's going on. — Graham, Feb 22 '18 at 17:26

score 7 · Answer 1 · answered Feb 22 '18 at 16:52

7

Try this: https://www.npmjs.com/package/dotenv

All you need to do is add a .env with your environment variables, and require('dotenv').config() as soon as you can in your application (the script called by npm start would be a good place)

answered Feb 22 '18 at 16:52

Rick

897
6
14

score 1 · Answer 2 · answered Feb 19 '20 at 14:30

1

SOME_KEY=`${abc}` Fixed it for me.

answered Feb 19 '20 at 14:30

Adamu Dankore Muhammad

129
1
4

score 0 · Answer 3 · answered Feb 22 '18 at 16:52

The npm module cross-env was made exactly for this purpose. The way you set an environment variable is not same across all the OSes. cross-env solves this.

Else, you can also try dotenv that solves this with a .env file.

You can also do this at the very basic level:

process.env.SOME_KEY = "somevalue";

score 0 · Answer 4 · edited Feb 04 '20 at 11:13

0

Add this in index file

require('dotenv').config({path: path.join(__dirname, '.env')});

edited Feb 04 '20 at 11:13

Dharman

30,962
25
85
135

answered Feb 04 '20 at 11:11

Renuka Bacchu

1

score 0 · Answer 5 · answered Jul 12 '22 at 09:17

0

const path = require('path');
require('dotenv').config( { path: path.join(__dirname, 'variables.env') });

answered Jul 12 '22 at 09:17

Milind Morey

2,100
19
15

process.env.SOME_KEY is undefined

5 Answers5

Linked