The short of it is that typescript allows variables to have a set type, for instance variable someVariable could be set to a type of string, and it would never be able to changed to another type, such as boolean. This can save a lot of headache down the road.
TypeScript is a nice touch on a resume especially if you’re planning on working at a big company like Google or Microsoft because they are the companies that are using it the most! It’s easy to pick up and it comes with lots of benefits! Learn TypeScript and don’t look back!