node_modules/worker-farm/examples/basic/index.js

'use strict'

let workerFarm = require('../../')
  , workers    = workerFarm(require.resolve('./child'))
  , ret        = 0

for (let i = 0; i < 10; i++) {
  workers('#' + i + ' FOO', function (err, outp) {
    console.log(outp)
    if (++ret == 10)
      workerFarm.end(workers)
  })
}