1
|
if (typeof Object.create === 'function') {
|
2
|
// implementation from standard node.js 'util' module
|
3
|
module.exports = function inherits(ctor, superCtor) {
|
4
|
if (superCtor) {
|
5
|
ctor.super_ = superCtor
|
6
|
ctor.prototype = Object.create(superCtor.prototype, {
|
7
|
constructor: {
|
8
|
value: ctor,
|
9
|
enumerable: false,
|
10
|
writable: true,
|
11
|
configurable: true
|
12
|
}
|
13
|
})
|
14
|
}
|
15
|
};
|
16
|
} else {
|
17
|
// old school shim for old browsers
|
18
|
module.exports = function inherits(ctor, superCtor) {
|
19
|
if (superCtor) {
|
20
|
ctor.super_ = superCtor
|
21
|
var TempCtor = function () {}
|
22
|
TempCtor.prototype = superCtor.prototype
|
23
|
ctor.prototype = new TempCtor()
|
24
|
ctor.prototype.constructor = ctor
|
25
|
}
|
26
|
}
|
27
|
}
|