get IDB tests to pass again, add new one

1 files changed, 8 insertions, 7 deletions

diff --git a/packages/idb-bridge/src/util/FakeEventTarget.ts b/packages/idb-bridge/src/util/FakeEventTarget.ts
index d2f46c98f..95489b4ac 100644
--- a/packages/idb-bridge/src/util/FakeEventTarget.ts
+++ b/packages/idb-bridge/src/util/FakeEventTarget.ts
@@ -97,13 +97,14 @@ abstract class FakeEventTarget implements EventTarget {
   public readonly listeners: Listener[] = [];
 
   // These will be overridden in individual subclasses and made not readonly
-  public readonly onabort: EventListener | null | undefined;
-  public readonly onblocked: EventListener | null | undefined;
-  public readonly oncomplete: EventListener | null | undefined;
-  public readonly onerror: EventListener | null | undefined;
-  public readonly onsuccess: EventListener | null | undefined;
-  public readonly onupgradeneeded: EventListener | null | undefined;
-  public readonly onversionchange: EventListener | null | undefined;
+  public readonly onabort: EventListener | null = null;
+  public readonly onblocked: EventListener | null = null;
+  public readonly oncomplete: EventListener | null = null;
+  public readonly onerror: EventListener | null = null;
+  public readonly onsuccess: EventListener | null = null;
+  public readonly onclose: EventListener | null = null;
+  public readonly onupgradeneeded: EventListener | null = null;
+  public readonly onversionchange: EventListener | null = null;
 
   static enableTracing: boolean = false;