No API Is the Best API — The elegant power of Power Assert
One of the core ideas behind Facebook’s React library is that there should be no need to learn a new API for things that you already know how to do in vanilla JavaScript. Why bother memorizing Angular’s ng-repeat syntax when you can just use good-old Array.map()? That’s a good idea, and it’s a big part of what made the project so appealing to developers in the first place. So then why should Jest–the same company’s JavaScript testing framework, and a popular choice among React developers–encourage you to learn a new assertion API, and to write code like
