Fair point. Although I think this doesn't really affect my actual point: Whether it's a statically-typed or a strong-typed language, you must sanitise incoming data at runtime, and then you can trust your static typing from then on.
This isn't something that only typescript has to deal with.
As an aside - of course, with typescript you can at any point just go "I don't care about what type this thing is" which means you lose that trust - but this is why you should avoid any or at least follow it up immediately with some form of type guards.
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In my own "teachings" I say as and any should only be used with external sources: either a shitty library lacking typing definitions or not knowing how to handle generics or data not yet sanitized.
When you shortcut and in fact "lie" to the type system you are setting up a bug basically.
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Fair point. Although I think this doesn't really affect my actual point: Whether it's a statically-typed or a strong-typed language, you must sanitise incoming data at runtime, and then you can trust your static typing from then on.
This isn't something that only typescript has to deal with.
As an aside - of course, with typescript you can at any point just go "I don't care about what type this thing is" which means you lose that trust - but this is why you should avoid
anyor at least follow it up immediately with some form of type guards.In my own "teachings" I say
asandanyshould only be used with external sources: either a shitty library lacking typing definitions or not knowing how to handle generics or data not yet sanitized.When you shortcut and in fact "lie" to the type system you are setting up a bug basically.