Clear entire line where string is found JAVASCRIPT

[Rmela]

I need to clear the whole line where a certain string is found, until the carriage return.

var LineStr = "* What a beautiful day\n";
                
var ResultingEmptyLine = preg_replace('/* What[\s\S]+?day\n', '', LineStr);

The code below does not work. Any suggestion?

If there is no way of doing this, how could I then delete all characters present between "* What" and the NEXT "*" (assuming that there are many statements in the textbox area as a bulletpoint list with "*").