override-fn
util function to override any other function
Quick start
Several quick start options are available:
- Download the latest release
- Clone the repo:
git clone https://github.com/massive-angular/override-fn.git - Install with bower:
bower install override-fn - Install with npm:
npm install override-fn
Examples
Use original parameters
var overrideFn = require('override-fn');
var context = {
fn: function (a, b, c) {
console.log('hello from fn: ', a, b, c);
}
};
var originalFn = overrideFn(context, 'fn', function (baseFn) {
console.log('hello from override-fn');
baseFn();
});
context.fn(1, 2, 3);
// output:
// hello from override-fn
// hello from fn: 1, 2, 3
originalFn(1, 2, 3);
// output:
// hello from fn: 1, 2, 3Use custom parameters
var overrideFn = require('override-fn');
var context = {
fn: function (a, b, c) {
console.log('hello from fn: ', a, b, c);
}
};
var originalFn = overrideFn(context, 'fn', function (baseFn, a, b, c) {
console.log('hello from override-fn');
baseFn(a + 1, b + 1, c + 1);
});
context.fn(1, 2, 3);
// output:
// hello from override-fn
// hello from fn: 2, 3, 4
originalFn(1, 2, 3);
// output:
// hello from fn: 1, 2, 3Override class
var overrideFn = require('override-fn');
var originalDate = overrideFn(global, 'Date', function (baseFn) {
console.log('hello from override-fn');
return baseFn(); // important to return created instance
});
var date = new Date();
console.log(date);
console.log(date instanceof Date);
console.log(date instanceof originalDate);
// output:
// hello from override-fn
// Tue May 24 2016 16:00:54 GMT+0300 (EEST)
// false
// trueCreators
Slava Matvienco
Alexandr Dascal
License
Code released under the MIT license.
