When you want to compile ES6 you can use Babel.
To automate operations like this and many others (such as minifying, compiling SASS/LESS, etc) you need task runners like Gulp or Grunt.
To bundle things up you can use Webpack or Browserify.
In the next chapter we will dive into Vue's single file components and use several tools that Vue provides you with, along with the tools we have learned.
If you found this chapter hard to understand, don't worry. You don't need to remember all these things. This was just a demonstration in order to give you a better understanding of how things work. From the next chapter we will use project-templates where things like Webpack, build on change and much more, are already implemented and we are just taking ...