What is the output of the following code:

let prom new Promise$(($resolve$,$ reject$)=>\{$

setTimeout$(()=>\{$

resolve$(4)$

$\},4000)$

$\})$

prom.finally$(($p$)=>\{$

console.log$($p$)$;

$\})$

prom.then$(($p$)=>\{$

console.log$($p$)$;

$).$catch$(($err$)=>\{$

console.log$($err$)$;

$\})$