adding packages

deprecated/dart_firebase/lib/src/token.dart

@@ -0,0 +1,35 @@
+part of dart_firebase;
+
+abstract class FirestoreAccessToken {
+  String? get accessToken;
+  String? get refreshToken;
+  DateTime get createdAt;
+  DateTime get expiresAt;
+
+  bool get isExpired => expiresAt.isAfter(new DateTime.now());
+}
+
+class FirestoreJsonAccessToken extends FirestoreAccessToken {
+  FirestoreJsonAccessToken(this.json, this.createdAt);
+
+  final Map<String, dynamic>? json;
+  String? get displayName => json!['displayName'] as String?;
+  String? get email => json!['email'] as String?;
+  String? get kind => json!['kind'] as String?;
+  String? get localId => json!['localId'] as String?;
+  bool? get registered => json!['registered'] as bool?;
+  int? get expiresInSeconds => int.tryParse(json!["expiresIn"]);
+
+  @override
+  String? get accessToken => json!["idToken"] as String?;
+
+  @override
+  String? get refreshToken => json!["refresh_token"] as String?;
+
+  @override
+  final DateTime createdAt;
+
+  @override
+  DateTime get expiresAt =>
+      createdAt.add(new Duration(seconds: expiresInSeconds!));
+}