@babel/plugin-transform-optional-catch-binding allows you to write cleaner JavaScript by omitting the catch binding variable in try...catch statements when you don't need it. This plugin transforms code like try { /* ... */ } catch { /* ... */ } into valid syntax for older JavaScript environments that require a catch binding. It enhances backwards compatibility, ensuring your modern JavaScript code works seamlessly in environments without optional catch binding support, reducing boilerplate and improving readability.