移除node_modules目录

const fs = require('fs')
const path = require('path')

function travel(dir, callback, finish) {
  fs.readdirSync(dir).forEach(function(file) {
    var pathname = path.join(dir, file)
    if (fs.statSync(pathname).isDirectory()) {
      travel(pathname, callback, finish)
    } else {
      callback(pathname)
    }
  })
  finish()
}

travel('../learn-node/node_modules', function(pathname) {
  console.log(pathname)
  fs.unlinkSync(pathname)
}, function() {
  console.log('finished')
})