[ng12]

> Typescript takes about 2x the time to write if you want to create all your typings properly.

Not true at all. You balance all of this stuff inside your head anyways: this object has this shape, this function takes these arguments, etc. The only overhead is actually writing them down -- which in itself arguably speeds up development because then your IDE knows about them too.

I pushed back migrating from Coffeescript to TypeScript and I consider it one of the only times I was really wrong about a front-end technology.