What is the difference between union and intersection types?

Can you explain the difference between union and intersection types in TypeScript?

Sure! In TypeScript, a union type allows a variable to hold multiple types, while an intersection type combines multiple types into one.

Can you give me an example of a union type?

Of course! A union type can be defined like this: let value: string | number; This means value can be either a string or a number.

And what about an intersection type?

An intersection type is defined using the & operator. For example: type A = { x: number; }; type B = { y: string; }; type C = A & B; Here, C has both properties x and y.

Thanks! How do I decide when to use each type?

Use union types when a value can be one of several types, and intersection types when you need to combine multiple types into one.