What causes you to say that JavaScript is a flawed language? Not trying to be snarky or saying you're wrong, just want to better understand your reasoning.

It seems to me that at one point JavaScript had a lot of confusing/bad design decisions but that more recent changes have largely eliminated them. For example, I almost never have to worry about "this" anymore.

I recently worked on a project using TypeScript and I really appreciated how it changed a lot of the bugs from being runtime to compile time. I could definitely see how that is a big flaw, but it seems like the community is developing solutions.