TypeScript
This item was not updated in last three versions of the Radar. Should it have appeared in one of the more recent editions, there is a good chance it remains pertinent. However, if the item dates back further, its relevance may have diminished and our current evaluation could vary. Regrettably, our capacity to consistently revisit items from past Radar editions is limited.
Adopt
TypeScript is a strict syntactical superset of JavaScript and adds optional static typing to the language.
TypeScript is our go-to way when developing complex JavaScript applications. Being able to use static types is a big win compared to developing traditional, non-typed JavaScript applications. Most modern IDEs support TypeScript these days which also helps to develop efficiently.