I've installed treemacs on vanilla emacs 27.1
when I did
M-x treemacs it opens file explorer in the sidebar.
I want to resize (i.e., expand and reduce) the length of the file explorer sidebar but there is no option to do so.
$lsb_release -a LSB Version: n/a Distributor ID: ManjaroLinux Description: Manjaro Linux Release: 20.2 Codename: Nibia
emacs version details -
$ emacs -version GNU Emacs 27.1
How can I make sidebar resizing happening?