Add Logging to a Utility Function
Explore how to apply the decorator pattern to add logging to a Node.js utility function. Learn to create a wrapper that logs inputs and outputs without altering the original function, improving visibility and traceability in your code.
We'll cover the following...
We'll cover the following...
Problem statement
You’ve got a basic utility function that calculates the square of a number. It’s used across your app, but you want to track what values it receives—and what it returns—without modifying the ...