I would say it makes JS bearable to use. I don't enjoy wondering whether a bug came from me forgetting to check against null instead of undefined, or accidental

I would say it makes JS bearable to use. I don't enjoy wondering whether a bug came from me forgetting to check against null instead of undefined, or accidentally overwriting an object with a string and so on. At least 50% of runtime issues I had earlier are now type errors at compilation and fixed quickly. I'll take boring any day, JS is not a language I want to spend more time with than necessary. I just wish the compilation was faster.