callbacks node js

var fs = require('fs')
  , path = 'my_file.txt'
 
function getFile(path, callback) {
  try {
    fs.readFile(path, function(err, data) {
      if(err) throw err
      var wrapperMessage = {coolStuff: true, data: data}
      callback(null, wrapperMessage)
    })
  } catch(error) {
    callback(err)
  }
  
}
 
getFile(path, function(err, message) {
  if(err) {
    console.error(err)
  } else {
    console.log(message)
  }
})