From d52205e87965ba2cb38b43fc50b57d28b9998786 Mon Sep 17 00:00:00 2001
From: Ethan Lee <125412902+ethan-tbd@users.noreply.github.com>
Date: Fri, 26 Apr 2024 09:42:12 -0700
Subject: [PATCH] fix: make `BearerDid` null-safe (#74)

---
 packages/web5/lib/src/dids/bearer_did.dart | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/web5/lib/src/dids/bearer_did.dart b/packages/web5/lib/src/dids/bearer_did.dart
index c871880..2426d3f 100644
--- a/packages/web5/lib/src/dids/bearer_did.dart
+++ b/packages/web5/lib/src/dids/bearer_did.dart
@@ -40,8 +40,12 @@ class BearerDid {
     }
 
     final keyExporter = keyManager as KeyExporter;
-    for (final vm in document.verificationMethod!) {
-      final publicKeyJwk = vm.publicKeyJwk!;
+    for (final vm in document.verificationMethod ?? []) {
+      if (vm.publicKeyJwk == null) {
+        continue;
+      }
+
+      final publicKeyJwk = vm.publicKeyJwk;
       final keyId = publicKeyJwk.computeThumbprint();
       final jwk = await keyExporter.export(keyId);