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The code I linked for example results in a web router that is fully type safe.

It's not like using js at all, not that I think there's anything wrong with it, if that's your jam.

Because typescript’s type-checking helps with 99.99%% of the code, and then 0.01% of the time when it doesn’t you use an escape hatch.

> It’s funny because the reason you used a language like typescript is because you want the compiler to be 100% sure that it’s compatible, not relying on human reasoning.

I ever used Typescript because I hoped it would catch some bugs that I didn't (and it did). I never expect it to be 100%. I can't even imagine 100% of what.

This is a great example of "letting perfect be the enemy of good enough".

Typescript is "good enough" at it's job. That's a great reason to use it.