What are the differences between generics and union types in TypeScript?

Can you explain the differences between generics and union types in TypeScript?

Sure! Generics allow you to create reusable components that can work with any data type, while union types let you define a variable that can hold multiple specified types.

Can you give me an example of each?

Of course! For generics, you might have a function like function identity<T>(arg: T): T { return arg; }. For union types, you could define a variable like let value: string | number; which can hold either a string or a number.

When should I use generics instead of union types?

Use generics when you want to create flexible and reusable functions or classes that can operate on various types. Use union types when you need a variable to accept multiple specific types.