Assign value to exports in Node.js

Question

For emxaple in these line of code below:

const fs = require('fs')

We get the object in module.export, not the object in exports of fs module.

But inside Express code, I see some assignment to exports like below, I do not know the purpose of it and this is my question

exports.application = proto;
exports.request = req;
exports.response = res;

Please help to let me know if you have any ideas about this.

Possible duplicate of [Difference between "module.exports" and "exports" in the CommonJs Module System](https://stackoverflow.com/questions/16383795/difference-between-module-exports-and-exports-in-the-commonjs-module-system) — OscarRyz, Oct 02 '17 at 02:59
If this is `req` and `res` from a particular http request, then this code is probably wrong or at best a very bad design. You would have to show us a lot more context for us to help you further. — jfriend00, Oct 02 '17 at 03:08
I just want to focus on assignment to export purpose, I can thing the request and response in the code is “whatever”. — thelonglqd, Oct 02 '17 at 03:34

score 2 · Answer 1 · answered Oct 02 '17 at 10:32

exports and module.exports refer to the same thing (exports is a reference to module.exports), unless you reassign exports by doing exports=foo. Nodejs always exports module.exports so as long as you do not reassign exports to something else, exports.bar=foo and module.exports.bar=foo have the same effect.

Assign value to exports in Node.js

1 Answers1