singleEmoji property
Matches exactly one emoji character.
Ideal for emoji-only validations (e.g., emoji picker).
Implementation
static final RegExp singleEmoji = RegExp(
r'[^\x00-\x7F]|(?:[.]{3})|[\uD83C-\uD83E][\uDDE0-\uDDFF]|'
r'[\uD83C-\uD83E][\uDC00-\uDFFF]|'
r'[\uD83F-\uD87F][\uDC00-\uDFFF]|'
r'[\u2600-\u26FF]|[\u2700-\u27BF]',
);