bind-props

About

This module binds each function property of an object to a new context. This is useful for defining class methods in separate files in order to reduce module size and increase code clarity.

Motivation

Modularity is awesome. Javascript classes aren't very modular. Classes methods must be defined inside the scope of the definition if they wish to inherit the class context! And the standard way for adding static methods doesn't work with namespaced methods.

bind-props helps to bring sanity back to your classes by allowing you to define large methods in separate files, namespacing them how you choose.

Private methods are achievable simply by using Function.prototype.call on a non-exported method with this while inside of any exported instance method.

Example

Test.js

import * as ctrl from './ctrl'

export class Test {
  constructor() { 
    super()
    this.message = 'Howdy!'
  }

  ctrl = bindProps( this, ctrl )
}

index.js

import { Test } from './Test'

Test.ctrl.test()

// -> Public: Howdy!
// -> Private: Howdy!

Test.ctrl.testPrivate()

// -> undefined

ctrl.js

export function test() {
  console.log( 'Public: ', this.message )
  testPrivate.call( this )
}

function testPrivate() {
  console.log( 'Private: ', this.value )
}