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sys.inherts to shadow constructor property from enumerability

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thanks to ES5 features in V8 it is quite easily possible.
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Dmitry Baranovskiy 2010-06-28 11:05:22 +10:00 committed by Ryan Dahl
parent 6b430a95c9
commit d3f04933f1
1 changed files with 7 additions and 5 deletions
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12
lib/sys.js
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@ -315,9 +315,11 @@ exports.pump = function (readStream, writeStream, callback) {
* @param {function} superCtor Constructor function to inherit prototype from
*/
exports.inherits = function (ctor, superCtor) {
var tempCtor = function(){};
tempCtor.prototype = superCtor.prototype;
ctor.super_ = superCtor;
ctor.prototype = new tempCtor();
ctor.prototype.constructor = ctor;
ctor.super_ = superCtor;
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false
}
});
};