Merge branch 'feature/new-ui' into feature/mono-repo

packages/flutter_widgets/lib/src/extension.dart

@@ -1,7 +1,28 @@
+import 'package:emojis/emoji.dart';
+import 'package:characters/characters.dart';
+
+final _emojis = Emoji.all();
+
 extension StringExtension on String {
   String capitalize() {
     return "${this[0].toUpperCase()}${this.substring(1)}";
   }
+
+  //  Emojis guidelines
+  //  1 to 3 emojis: big size with no text bubble.
+  //  4+ emojis or emojis+text: standard size with text bubble.
+  bool get isOnlyEmoji {
+    final characters = this.trim().characters;
+    if (characters.isEmpty) return false;
+    if (characters.length > 3) return false;
+    return characters.every((c) {
+      return _emojis.firstWhere(
+            (Emoji emoji) => emoji.char.contains(c),
+            orElse: () => null,
+          ) !=
+          null;
+    });
+  }
 }
 
 /// List extension