46 lines
888 B
JavaScript
46 lines
888 B
JavaScript
'use strict'
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var xtend = require('xtend')
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var inherits = require('inherits')
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module.exports = unherit
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// Create a custom constructor which can be modified without affecting the
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// original class.
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function unherit(Super) {
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var result
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var key
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var value
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inherits(Of, Super)
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inherits(From, Of)
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// Clone values.
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result = Of.prototype
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for (key in result) {
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value = result[key]
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if (value && typeof value === 'object') {
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result[key] = 'concat' in value ? value.concat() : xtend(value)
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}
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}
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return Of
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// Constructor accepting a single argument, which itself is an `arguments`
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// object.
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function From(parameters) {
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return Super.apply(this, parameters)
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}
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// Constructor accepting variadic arguments.
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function Of() {
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if (!(this instanceof Of)) {
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return new From(arguments)
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}
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return Super.apply(this, arguments)
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}
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}
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