What is function wrapping in JavaScript?

What is function wrapping in JavaScript?

Function wrapping in JavaScript involves creating a new function that enhances or modifies the behavior of an existing function.

Can you give me an example of function wrapping?

Sure! Here's a simple example: you can create a wrapper that logs the arguments of a function before calling it.

How would I implement that in code?

You can do it like this:

function wrapFunction(originalFunction) {
    return function(...args) {
        console.log('Arguments:', args);
        return originalFunction(...args);
    };
}

const original = (x, y) => x + y;
const wrapped = wrapFunction(original);
wrapped(2, 3); // Logs: Arguments: [2, 3]

What are the benefits of using function wrapping?

Function wrapping allows for code reuse, easier debugging, and the ability to add additional functionality without modifying the original function.