Method is undefined when importing from another file

Question

I'm getting undefined when I try importing a method from another file. I have 3 files one calling the next.

File1:

const { methodFromFile2 } = require('./file2');
methodFromFile2('myParam');

File2:

const { methodFromFile3 } = require("../file3");

consoele.log(methodFromFile3); // undefined
function methodFromFile2(coolParam) {
    consoele.log(methodFromFile3); // undefined
}

module.exports = { methodFromFile2 };

File3

function methodFromFile3(coolParam) {
    ...
}

module.exports = { methodFromFile3 };

In file2, the method methodFromFile3 is always undefined. But, when I move the required statement inside methodFromFile2 , it works. Why is it that way and is that the correct way of doing it?

Answer 1

If there are other require() statements that you aren't showing us, then this is probably caused by a circular require() where A requires B and B requires A. When you do that, one of the requires will end up getting an empty module object, not the one the module intends to return.