Appending custom html in the editor

[haresh6x]

I am currently using react-rte version 0.16.3 and having a bit of difficulty as to how can I append custom html string after the current cursor position.

For example I have the string which is basically a button.
<a href=some-link target="_blank"> <button style="background-color:#b32aa9;color:#000000" type="button">Button Name</button> </a>

How do I approach towards it? I can't seem to find any documentation regarding it. I'd appreciate the help!