Where is the source code for the html editor of wordpress?

Question

WordPress

I implement my own simple engine and the only thing missing is a simple html editor, just like in wordpress. It's html, not visual:

Perhaps one of you knows where to find its source code in the engine files? What editors I have not tried to install, they are all visual and usually with a bunch of unnecessary things for me, if I could see the source code, there might be a chance to transfer the editor to my engine ...

Answer 1

Wordpress uses WYSIWYG Tinymce - more

Answer 2

inside php files

Answer 3

Link to a popular editor. It seems that VP even uses it - https://www.tinymce.com/