Overload Functions to Enrich your Definition

The reason to use overloaded functions

TypeScript allows us to have an overloaded function. Often, the term ‘overload’ is linked to an object-oriented concept which you will see later. Any function, even if not in a class, can have an overload. The reason to use overload functions is that you may have a function that takes some required parameters only in a specific scenario. Instead of using the overloaded functions, it’s possible to use optional parameters and default parameters.

The advantage of overloaded functions is clarity for the consumer. A consumer sees several functions with different signatures (parameters and return types). However, it’s still a single function.