Single Emoji and multiple Emojis detection cannot be done

[nicolas-zozol]

Emoji is not compatible with Javascript characters, which are utf-16 sequences. Some emojis just take two JS characters, for what I have understood.

https://stackoverflow.com/a/22315491/968988

https://medium.com/reactnative/emojis-in-javascript-f693d0eb79fb
(note that regexp here is much more simple than this one : https://github.com/mathiasbynens/emoji-regex/blob/master/index.js)