What is an advanced TypeScript generic function?

An advanced TypeScript generic function is a function that uses generic types with constraints, multiple type parameters, or complex nested types to provide flexible and type-safe operations.

These functions accept type parameters to work with various data types while enforcing constraints. They can infer types, extend base types, and manipulate types for powerful reusable code.

Code

function identity<T>(value: T): T {
  return value;
}

function mergeObjects<T, U>(obj1: T, obj2: U): T & U {
  return { ...obj1, ...obj2 };
}