newify

Call function constructors with an array of arguments that spread

  • newify

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newify
1.1.910 years ago10 years agoMinified + gzip package size for newify in KB

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Purpose
Calling function constructors with an array of arguments is difficult. Until spread params are fully supported in all browsers, newify does the job.
For a given function constructor
function Student(firstName, lastName, birthYear){
	this.firstName = firstName
	this.lastName = lastName
	this.birthYear = birthYear
}

We want to easily call the function constructor like
var arr = ['john','scot', 1980]
var s = new Student(arr) //but this will obviously not work as expected.

//we need ES6 spread
var s = new Student(...arr)

But since we can't use spread in ES5 ...
NEWIFY to the rescue!
var arr = ['john','scot', 1980]
var s = require('newify')(Student, arr)
Installation
npm install newify
Usage
As in the above example, just give newify a function and an array of args
var arr = ['john','scot', 1980]
var s = require('newify')(Student, arr)
Run tests
make test