From a2d9bbfc9e6633c922b460b2a1e4dabd84e23cc6 Mon Sep 17 00:00:00 2001
From: Christian Pauly <christian-pauly@posteo.de>
Date: Wed, 25 Mar 2020 13:56:49 +0100
Subject: [PATCH] [MatrixIdStringExtension] Add null check

---
 lib/src/utils/matrix_id_string_extension.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/src/utils/matrix_id_string_extension.dart b/lib/src/utils/matrix_id_string_extension.dart
index 4064fb9..f25268f 100644
--- a/lib/src/utils/matrix_id_string_extension.dart
+++ b/lib/src/utils/matrix_id_string_extension.dart
@@ -4,6 +4,7 @@ extension MatrixIdExtension on String {
   static const int MAX_LENGTH = 255;
 
   bool get isValidMatrixId {
+    if (this?.isEmpty ?? true) return false;
     if (this.length > MAX_LENGTH) return false;
     if (!VALID_SIGILS.contains(this.substring(0, 1))) {
       return false;
@@ -22,5 +23,5 @@ extension MatrixIdExtension on String {
 
   String get domain => isValidMatrixId ? this.substring(1).split(":")[1] : null;
 
-  bool equals(String other) => this.toLowerCase() == other.toLowerCase();
+  bool equals(String other) => this?.toLowerCase() == other?.toLowerCase();
 }