Node.js Module.exports Undefined Empty Object

I have the following files. index.js module.exports = { 'first': require('./1.js'), 'second': require('./2.js'), 'third': require('./3.js') }; 1.js module.exports = 'H

Solution 1:

This is because at the time of running 3.js the index.js file has not been fully defined yet. In order to fix this you have to require the files specifically. For example changing 3.js to the following will work.

const first = require('./1.js');
const second = require('./2.js');
module.exports = `${first}${second}`;

Solution 2:

Just remove this line:

"third": require('./3.js')

You cannot make index.js dependend on 3.js as 3.js is dependend on index.js (thats called circular dependency). Nodejs might be able to resolve it some specific cases but I woupd generally not do this. Instead extract the parts that 3.js uses from index.js into a new file, and then import that from both.