Print stdout and stderr in terminal and redirect to 2 different files

Question

The answer(s) to this question explains how to print stdout and stderr to the terminal, while also redirecting them to a file:

program [arguments...] 2>&1 | tee outfile

How could this be extended if stdout and stderr should be redirected in 2 different files ?

Answer 1

With process substitution:

program >(tee stdout.log) 2>(tee stderr.log >&2)