Instruction: Describe the process of method overloading and provide a code example.
Context: This question evaluates the candidate's ability to use TypeScript's features to implement method overloading, enhancing polymorphism in the application.
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First, let's clarify what method overloading entails. In TypeScript, method overloading allows a class or interface to have multiple methods with the same name but different signatures. However, it's important to note that TypeScript implements method overloading by having a single implementation method with a signature that is compatible with all the overload signatures. This approach ensures that the actual function implementation is flexible enough to handle various types of inputs.
To illustrate, let's consider a practical example relevant to a Frontend Developer role, where we might want to design a component that can fetch user data. This component might need to support fetching by user ID, or by a combination of first and last name. In TypeScript, we can overload the fetchUserData method to accommodate these scenarios....