good way to call child processes inside a node script

childpx-snip.md

elegantly call child processes within node

const node = require('when/node')
const {exec} = require('child_process')
const tplTestPath = path.join(__dirname, 'example')

function npmInstall (dir) {
  return node.call(exec, 'npm install', { cwd: dir })
}

npmInstall.bind(null, tplTestPath)

https://nodejs.org/api/child_process.html#child_process_spawning_bat_and_cmd_files_on_windows