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Me, migrating my code from JavaScript to TypeScript:
(lemmy.world)
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this post was submitted on 18 Oct 2023
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Not necessarily, depending on your situation you can type the JS code yourself.
If the team making the JS code were using jsdoc then the Typescript compiler can recognize the comments and use it for type checking.
In some instances the compiler can infer types from JS code to do some basic validation.
Even if the external JS code is recognized as
any, your own code that's using it still has types, so it's better than nothing.