How do I use type assertions in TypeScript?

How do I use type assertions in TypeScript?

Type assertions in TypeScript allow you to tell the compiler about the type of a variable. You can use the as keyword or angle-bracket syntax.

Can you give me an example of using type assertions?

Sure! If you have a variable let someValue: any = 'this is a string';, you can assert its type like this: let strLength: number = (someValue as string).length;.

What are the benefits of using type assertions?

Type assertions help you avoid type errors and provide better type safety, allowing for more robust code.

Are there any downsides to using type assertions?

Yes, overusing type assertions can lead to runtime errors if you're not careful, as it bypasses some of TypeScript's type checking.