Is it possible to get information about the current user using BX?

Question

1C-Bitrix

Is it possible to somehow get information about the current user from the BX object?

Answer 1

BX.message('USER_ID');
Returns the user ID as a string, if not authorized then an empty string
Nothing prevents you from pushing data from PHP into JS using the built-in method

let something = <?=CUtil::PhpToJSObject($someArray)?>;