install.js

const shell = require('shelljs')

// const hasYarn = require('has-yarn')

let lessons = [
  '1-rendering',
  '2-composition',
  '3-state',
  '4-data-flow',
  '5-forms',
  '6-apps',
  '7-testing',
  '8-imperative-to-declarative',
  '9-carousel'
]

lessons.forEach(dir => {
  shell.cd(`${dir}`)
  shell.echo(`\nInstalling Lesson: ${dir}:`)
  // if (hasYarn) {
  //   shell.exec(`yarn`)
  // } else {
  shell.exec(`npm install`)
  // }
  shell.cd('..')
})