How to deal with cyclic dependencies in Node.js

Question

I\'ve been working with nodejs lately and still getting to grips with the module system so apologies if this is an obvious question. I want code roughly like the following b

Answer 1

Here is a quick workaround that I've found use full.

On file 'a.js'

let B;
class A{
  constructor(){
    process.nextTick(()=>{
      B = require('./b')
    })
  } 
}
module.exports = new A();

On the file 'b.js' write the following

let A;
class B{
  constructor(){
    process.nextTick(()=>{
      A = require('./a')
    })
  } 
}
module.exports = new B();

This way on the next iteration of the event loop classes will be defined correctly and those require statements will work as expected.