Refactor: streamline method assignment in app

[Ayoub-Mabrouk]

• Replaced traditional function expressions with arrow functions for improved readability.
• Utilized the spread operator to handle arguments more concisely and removed unnecessary variable declarations.
• The logic for handling the get method remains intact while enhancing overall code clarity.

[wesleytodd]

To me this seems like a stylistic one again. The only thing I think this does which is worth it is removing the .apply in favor of the spread. I will let this sit a bit to see what others think.