parametr

A parameter management utility.

This utility allows you to quickly validate and sanitize a configuration Object.

Installation

Using npm:

$ npm i --save parametr

Usage

In Node.js

const params = require('parametr');

var exampleConfig = { 
    cipherKey: 'abcdefg', 
    hostname: 'xyz.com',
    seedValue: '12345'
};

var safeConfig = params(exampleConfig)
      .require('cipherKey')
      .permit('hostname');
      
// { cipherKey: 'abcdefg', hostname: 'xyz.com' }

The API is designed around a decorator pattern and includes chainable methods to define constructs. parametr does not mutate objects.

Required properties

params(myconfig).require('abc')

A property which is required will throw errors when they are missing. All required properties are also permitted.

Permitted properties

params(myconfig).permit('abc')

Any properties which are permitted will be picked and all other properties omitted.