[mrspeaker]

The article is correct in that it's important to understand that typing your code has a cost - it's not just all magical benefits. Personally (personally - not for everybody) the cost is that it inhibits my initial experimentation. I don't KNOW what types things should be while I'm faffing around researching and experimenting in a new domain.

I'm a huge fan of strongly-typed code, but I like to add the types much later, once all of the pieces are in place and are not in constant change, and mostly as a way to not have to write unit tests. If I type from the start I find I lock in to sub-optimal data structures and get "attached" to them. I already typed them, I don't want to break things!

Also, I live by the "What Would Rich Hickey Do?" school of thought... so when he mandates types in Clojure, I'll switch to TypeScript by default ;)

[boubiyeah]

type IJustWantToExperiment = any

You could use the allowJs typescript flag and mostly use JS files at first; perhaps only typing a few models.