requirenv

how to use

1. install it npm i requirenv
2. add a file .env.required.js to the root of your project
3. prepend requirenv && to the scripts that do you want to fail early if any required environmental variable is missing
4. that's it

.env.required.js example

module.exports = [
  "foo",
  "bar",
  "baz",
]

package.json example

{
  ...
  "scripts": {
    "dev": "requirenv .env.local && next dev",
    "build": "requirenv && next build",
    "start": "requirenv && next start"
  },
  ....
}

How to use it as a library

const missing = require('requirenv')

that's it. Missing is an array with all the missing variables. remember to call this after dotenv, if you use it.