envalid/example/env.js

Validation for your environment variables

const envalid = require('..')

module.exports = envalid.cleanEnv(process.env, {
    HOST:       envalid.str({ default: '127.0.0.1' }),
    PORT:       envalid.num({ default: 3000, desc: 'The port to start the server on' }),

    // For this example, the MESSAGE env var will be read from the .env
    // file in this directory (so the default value won't be used):
    MESSAGE:    envalid.str({ default: 'Hello, world' })
})