This behaviour is documented here:
http://nodejs.org/api/modules.html#modules_modules

If the explanation there is not clear, do you have any suggestions on how
to improve it? Is there another section in the docs that you looked for
this information first?

Suggestions welcome!

~Ryan



On Tue, Oct 15, 2013 at 5:33 AM, greelgorke <greelgo...@gmail.com> wrote:

> module.exports and exports are referencing the same object. if you do
> module.exports = foo, both point to different objects. if you want to
> assign to module.exports and keep the shortcut exports correct do this
>
> module.exports = exports = foo
>
> simple reference handling, there is no magic behind.
>
> Am Dienstag, 15. Oktober 2013 12:22:29 UTC+2 schrieb yougen zhuang:
>
>> Before assign value to exports, module.exports === exports, but after
>> assign value, they're not equal.  In my view, they're point to the same
>> reference.
>> BTW, if I modify to module.exports.Rect = Rect, then module.exports ===
>> exports
>>
>> function Rect(w,h) {
>>     this.w = w;
>>     this.h = h;
>> };
>>
>> Rect.prototype.area = function(){
>>     return this.w*this.h;
>> };
>>
>> console.log(module.exports === exports);//true
>> module.exports = Rect;
>> console.log(module.exports);
>> console.log(exports);
>> console.log(module.exports === exports);//false
>>
>>
>>  --
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