yieme / enval

ENvironment variable VALue. Returns variable as object from JSON.parse/JSONIC or a string

enval

ENvironment variable VALue. Returns variable as object from JSON.parse/JSONIC or a string

Install

npm i enval --save

Usage

Instead of:

var myVal = process.env['MY_VARIABLE']
if (myVal) {
  myVal = JSON.parse(myVal)
}

Use:

MY_VARIABLE=hi:mom node yourApp.js

var enval = require('enval')

var myVal = enval('MY_VARIABLE')

// with default if undefined

myVal = enval('MY_VARIABLE', { foo: "bar" })

Examples

Environment value	Returned Value	Description
true	true	via JSON.parse()
null	null	via JSON.parse()
false	false	via JSON.parse()
0	0	via JSON.parse()
17	17	via JSON.parse()
hello	hello	via JSON.parse()
{ "foo": "bar"}	{ foo: "bar" }	via JSON.parse()
foo:bar	{ foo: "bar" }	via JSONIC()
greet:Bob,age:18	{ greet: "Bob", age: 18 }	via JSONIC()
invalid:jsonic,value,here	invalid:jsonic,value,here	pass-thru as unable to parse

Optional logging if variable, if it exists

var myVal = enval('MY_VARIABLE', undefined, true)
// Logged: MY_VARIABLE..............: ("hi":"mom")

Provide your own logging function

var myVal = enval('MY_VARIABLE', undefined, console.error)
// Logged: MY_VARIABLE..............: ("hi":"mom")

License MIT