bar.js

module.exports = function bar (bus) {
  setInterval(() => {
    bus.emit('foo', {bar: [69, 69, 69]})
  }, 6900)


  bus.on('bar', data => {
    console.log('foo', data)
  })
}

foo.js

module.exports = function foo (bus) {
  setInterval(() => {
    bus.emit('bar', {bar: [420, 420, 420]})
  }, 4200)

  bus.on('foo', data => {
    console.log('foo', data)
  })
}

index.js

const foo = require('./foo')
const bar = require('./bar')

const nanobus = require('nanobus')

const bus = nanobus()

foo(bus)
bar(bus)