<input type="text"> and <textarea> tags could have listeners attached to them that find the emoji codes and replace them automatically with emojis.
v2
a global and a per-site toggle could be added. In a late
v3
Custom css selectors and event listener types e.g mail.google.com could have div.mailinput>span.typer as a selector and listen to keyup, change and keydown to do the replacements.
v1
<input type="text">and<textarea>tags could have listeners attached to them that find the emoji codes and replace them automatically with emojis.v2
a global and a per-site toggle could be added. In a late
v3
Custom css selectors and event listener types e.g mail.google.com could have
div.mailinput>span.typeras a selector and listen to keyup, change and keydown to do the replacements.