What are the best practices for using conditional types in TypeScript?

What are the best practices for using conditional types in TypeScript?

When using conditional types in TypeScript, it's important to keep them simple and readable. Avoid complex nested conditions.

Can you give me an example of a simple conditional type?

Sure! Here's a basic example: type IsString<T> = T extends string ? true : false; This checks if T is a string.

How can I handle multiple types with conditional types?

You can use union types. For example: type TypeCheck<T> = T extends string ? 'String' : T extends number ? 'Number' : 'Other'; This checks for string or number.

Are there any performance considerations I should be aware of?

Yes, excessive use of complex conditional types can slow down type checking. It's best to use them judiciously.