Notice that the core arrow operator syntax is virtually identical to JavaScript, and they do the same thing, i.e., create a function that accepts arguments, performs logic, and returns a value.

Gain a thorough understanding of React’s new component style and learn to use the hooks API to write simpler and more elegant React code.

Microsoft has backed a proposal to bring optional and erasable type syntax to JavaScript in an effort to make its TypeScript language both faster and easier to use.