As a user, I want to have resizeable textarea widget URL that I can install on my site, and it will expand to fit it's content

[hubertlepicki]

I want to have an URL like https://commentable.net/widget.js that I can add to my web site. It loads some JavaScript inside this frame. The frame resizes as the iframe content expands / shrinks down.

Most likely we need to have some JavaScript installed in parent's frame, that talks to iframe content's JavaScript (via message sending?) that figures out the size of iframe's height, and resizes the parent <iframe> object to match.

Please research how others are doing it