The main benefit of TypeScript is static typing that provides additional information about your code which serves as better documentation for other developers and enables TypeScript compiled to catch more mistakes during compilation. Writing types is optional because TypeScript is good at automatic type interference.

Is it worth learning TypeScript in 2020?

If you're a hobbyist then TypeScript may not be vital to learn(but could still be fun). If you prefer ES2015 with Babel then TypeScript might not interest you at all. But if you're a professional frontend developer or hoping to become one, TypeScript is well worth learning.

Is TypeScript really necessary?

TypeScript is no. ... Whether you use TypeScript or not, the following practices should be in place for any software team irrespective of size: Well written unit tests should cover as much of the production code as is deemed reasonable. Pair programming– an extra set of eyes can catch a lot more than syntactical errors.