2min chapter

Syntax - Tasty Web Development Treats cover image

Stump’d × JavaScript × GraphQL × Memory Safety × Web History

Syntax - Tasty Web Development Treats

CHAPTER

How to Use a Type Guard in JavaScript

The value of this is not redefined when you're inside of an arrow function. What is the difference between a type guard and a type assertion or sometimes called a type cast? All right, I like that this is a good question. We kind of answered this one. But I think you could have a good answer for this in TypeScript.

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