In this chapter, we had a brief overview of what Babel is, what it does, and what is needed to make it work with Vue. All of this is abstracted away with the help of vue-cli-service, which is powered by webpack under the hood. Now that we have an understanding of how all these different parts work together, we will start using only the Vue CLI and its UI, and learn how to work with it better in the following chapters.
We'll begin by understanding testing in Vue CLI with the help of Jest. We'll also learn about Test-Driven Development (TDD) and running tests with the help of Vue CLI UI.