This is how functional try-catch transforms your JavaScript code

How common is this?

It’s yet another instance where we want a value that depends on whether or not there’s an exception.

Normally, you’d most likely create a mutable variable outside the scope for error-free access within and after the try-catch.

But it doesn’t always have to be this way. Not with a functional try-catch.

A pure tryCatch() function avoids mutable variables and encourages maintainability and predictability in our codebase.

No external states are modified — tryCatch() encapsulates the entire error-handling logic and produces a single output.

Our catch turns into a one-liner with no need for braces:

The tryCatch() function

So what does this tryCatch() function look like anyway?

From how we used it above you can already guess the definition: