redefine-function

Redefine Function

Re-define functions

Install

$ npm install --save redefine-function 

Usage

var redefineFunction= require("redefine-function")
 
var Greetings = {
  hello: function(){
    return "Hi there."
  }
}
 
console.log(Greetings.hello()) // Hi there
 
redefineFunction(this, "Greetings.hello", function(){
  return  "Don't worry about it"
})
 
console.log(Greetings.hello()) // Don't worry about it

API

redefineFunction(context, functionName, newFunction)

Name	Type	Description
Context	Object	The context of the object or function you want to redefine
functionName	String	A string representation of the function you want to redefine
newFunction	Function	The function you want to override with

var redefineFunction= require("redefine-function")
 
var Greetings = {
  hello: function(){
    return "Hi there."
  }
}
 
console.log(Greetings.hello()) // Hi there
 
redefineFunction(this, "Greetings.hello", function(){
  return  "Don't worry about it"
})
 
console.log(Greetings.hello()) // Don't worry about it

Also works with prototype functions:

var redefineFunction= require("redefine-function")
 
String.prototype.yell = function(){
  return this + "!"
}
 
function reallyYell(){
  return this + "!!!!!!!!"
}
 
"Hello".yell() // #=>  "Hello!"
 
redefineFunction(global, "String.prototype.yell", reallyYell)
 
"Hello".yell() // #=>  "Hello!!!!!!!!"