https://blog.acolyer.org/2017/09/19/to-type-or-not-to-type-q...
TL;DR: both Flow and TypeScript are pretty good, and conservatively either of them can prevent about 15% of the bugs that end up in committed code.
TL;DR: both Flow and TypeScript are pretty good, and conservatively either of them can prevent about 15% of the bugs that end up in committed code.