Only if you use a badly written library. Most libraries have types provided by DefinitelyTyped. Those who don’t are (in my experience) so tiny that you probably aren’t using them; or, if you really wanted, can check yourself.

In the end, if you encounter a bug, it’ still 99% of the time not a library’s fault, even if it’s written in plain JS.

[–] CanadaPlus@lemmy.sdf.org 1 points 4 months ago* (last edited 4 months ago)

Like I said to the other person, those are just types over top of JavaScript that can still fail if/when coercion happens under the hood.

I don't even know how to search it now, but a specific example came up on here of a time when JavaScript libraries will cause problems, and problems you can't even see very well if you're expecting it to act strictly-typed.