Web Reference: Given JavaScript's flexibility, it can be a good idea to add runtime checks to your code to validate your assumptions. These are typically called assertions (or invariants) and they are small functions which raise errors early when your variables don't match up to what you expect. Nov 7, 2023 · TypeScript Assertion functions are nothing but the functions that allow us to mainly create the custom type guards that assert the type of a value on our specific criteria. See full list on blog.logrocket.com
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