TypeScript Tutorial for Beginners: Getting Started
Learn TypeScript in One Hour - Crash Course
TypeScript Fundamentals: Variables, Types, and Functions
TypeScript Object-Oriented Programming (OOP) Basics
Asynchronous Programming in TypeScript with Promises and Async/Await
TypeScript and React: Building a Simple Todo App
Advanced TypeScript Concepts: Generics and Decorators Explained
TypeScript vs. JavaScript: Key Differences and When to Use EachType guards are regular functions that return a boolean, taking a type and telling TypeScript if it can be narrowed down to something more specific
TypeScript uses some built-in JavaScript operators like typeof, instanceof, and the in operator, which is used to determine if an object contains a property
In TypeScript, the typeof type guard is used to narrow down the type of a variable based on the runtime evaluation of the typeof operator. This type guard is particularly useful when dealing with primitive types and can help you determine the specific primitive type a variable holds.
You can use typeof to check the type of a variable against a string representing the primitive type. For example:
In TypeScript, type guards are a way to narrow down the type of a value within a certain block of code.
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