[mmckelvy]

Sigh. I really wish people would just accept the fact that JavaScript is a dynamically typed language and stop making things unnecessarily difficult.

[Klathmon]

That's why I love Flow and Typescript so much. They are as opt-in as you want them to be.

I've seen a team use typescript, but have zero types in most of their files, they just used it from libraries to get some IDE autocomplete and some very small typing on core areas.