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/**
* @author Titus Wormer
* @copyright 2015 Titus Wormer
* @license MIT
* @module unherit
* @fileoverview Create a custom constructor which can be modified
* without affecting the original class.
*/
'use strict';
/* Dependencies. */
var xtend = require('xtend');
var inherits = require('inherits');
/* Expose. */
module.exports = unherit;
/**
* Create a custom constructor which can be modified
* without affecting the original class.
*
* @param {Function} Super - Super-class.
* @return {Function} - Constructor acting like `Super`,
* which can be modified without affecting the original
* class.
*/
function unherit(Super) {
var result;
var key;
var value;
inherits(Of, Super);
inherits(From, Of);
/* Clone values. */
result = Of.prototype;
for (key in result) {
value = result[key];
if (value && typeof value === 'object') {
result[key] = 'concat' in value ? value.concat() : xtend(value);
}
}
return Of;
/**
* Constructor accepting a single argument,
* which itself is an `arguments` object.
*/
function From(parameters) {
return Super.apply(this, parameters);
}
/**
* Constructor accepting variadic arguments.
*/
function Of() {
if (!(this instanceof Of)) {
return new From(arguments);
}
return Super.apply(this, arguments);
}
}
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