Variables from separate file loaded during NPM script execution

Question

I have a file (.env) of environment variables defined at the root of my NPM module which looks like this:

FOO=bar
BAZ=zoo

I would like to have these variables made available when I run the module's package.json scripts.

Here's an attempt from my package.json:

{
  ...
  "scripts": {
    "foo": "source ./.env && echo $FOO"
  }
  ...
}

But, when I run npm run foo I get this error:

sh: 1: source: not found

How can I make $FOO available in this context?

A cross-OS solution would best, but for now I'm running on Ubuntu.

I saw dotenv, but didn't see a way for it work directly embedded in the scripts section. In my case, I'm not trying to run a node.js program...just a bash script — Jonathan.Brink
– Jonathan.Brink, Commented Apr 2, 2019 at 19:56

Nino Filiu · Accepted Answer · 2019-04-02 20:03:25Z

1

I don't think NPM has a built-in for that, but you can prefix all your scripts with a minimal export command:

{
  "scripts": {
    "foo": "export $(cat .env | xargs) && echo $FOO"
  }
}

answered Apr 2, 2019 at 20:03

Nino Filiu

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