A typical React pattern for handling an event when you need to prevent default

ReactEventExample.jsx

function MyForm(props){
  const handleSubmit = (event) => {
   if(event){
     event.preventDefault()
   }
   props.onSubmit() // <== This is all I really want to do!!!
  }
  return <form onSubmit={handleSubmit}>
        <!-- ... --->
  </form> 
}