Chain Multiple Decorators on a Service Method
Explore how to create and combine multiple decorators to add logging and execution timing to a Node.js service method. Understand how to extend behavior transparently without modifying the original function, ensuring each decorator works independently and composes correctly. Gain practical experience in layering decorators to enhance asynchronous service functions while preserving code clarity.
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Problem statement
You’re working with a simulated service that fetches user data asynchronously. The team wants to add logging for visibility and timing for performance monitoring—but the function itself can’t be changed. Each decorator adds one layer of behavior. We’ll need to compose them correctly so that logging and timing both work together without interfering. ...