@brocan/env

env

A simple wrapper around node-config which provides a way to ensure the presence of required properties.

Usage

// will throw if PORT is not set
const env = require('@brocan/env').ensure([
    'PORT'
]);

const port = env.get('PORT');

// will return localhost if HOST is unset
const host = env.getOrDefault('HOST', 'localhost');

API

ensure(properties: Array<string>): env

Checks if the specified properties are set. Throws if any of the required properties is missing. The thrown Error object has a missing field with the array of the missing properties.

Returns the env instance if all properties are set.

get(property: string): string

Provides the same functionality as config.get().

getOrDefault(property: string, value: any): any

If the specified property is set, then returns its value, otherwise returns the value passed as the second parameter.

getOrProvide(property: string, provider: (string) => any): any

If the specified property is set, then returns its value, otherwise calls the provider function with the property and returns the result.

has(property: string): boolean

Provides the same functionality as config.has().