change store.get return type when no value is found to undefined

IDBRequest.result is undefined according to the official TS type decls.

src/matrix/storage/idb/QueryTarget.ts

@@ -37,7 +37,7 @@ interface QueryTargetInterface<T> {
     openKeyCursor(range?: IDBQuery, direction?: IDBCursorDirection | undefined): IDBRequest<IDBCursor | null>;
     supports(method: string): boolean;
     keyPath: string | string[];
-    get(key: IDBValidKey | IDBKeyRange): IDBRequest<T | null>;
+    get(key: IDBValidKey | IDBKeyRange): IDBRequest<T | undefined>;
     getKey(key: IDBValidKey | IDBKeyRange): IDBRequest<IDBValidKey | undefined>;
 }
 
@@ -78,7 +78,7 @@ export class QueryTarget<T> {
         return this._target.supports(methodName);
     }
 
-    get(key: IDBValidKey | IDBKeyRange): Promise<T | null> {
+    get(key: IDBValidKey | IDBKeyRange): Promise<T | undefined> {
         return reqAsPromise(this._target.get(key));
     }
 

src/matrix/storage/idb/Store.ts

@@ -91,7 +91,7 @@ export class QueryTargetWrapper<T> {
         }
     }
 
-    get(key: IDBValidKey | IDBKeyRange): IDBRequest<T | null> {
+    get(key: IDBValidKey | IDBKeyRange): IDBRequest<T | undefined> {
         try {
             LOG_REQUESTS && logRequest("get", [key], this._qt);
             return this._qt.get(key);

src/matrix/storage/idb/stores/AccountDataStore.ts

@@ -28,7 +28,7 @@ export class AccountDataStore {
         this._store = store;
     }
 
-    async get(type: string): Promise<AccountDataEntry | null> {
+    async get(type: string): Promise<AccountDataEntry | undefined> {
         return await this._store.get(type);
     }
 

src/matrix/storage/idb/stores/DeviceIdentityStore.ts

@@ -17,7 +17,7 @@ limitations under the License.
 import {MAX_UNICODE, MIN_UNICODE} from "./common";
 import {Store} from "../Store";
 
-interface DeviceIdentity {
+export interface DeviceIdentity {
     userId: string;
     deviceId: string;
     ed25519Key: string;
@@ -65,7 +65,7 @@ export class DeviceIdentityStore {
         return deviceIds;
     }
 
-    get(userId: string, deviceId: string): Promise<DeviceIdentity | null> {
+    get(userId: string, deviceId: string): Promise<DeviceIdentity | undefined> {
         return this._store.get(encodeKey(userId, deviceId));
     }
 
@@ -74,7 +74,7 @@ export class DeviceIdentityStore {
         this._store.put(deviceIdentity);
     }
 
-    getByCurve25519Key(curve25519Key: string): Promise<DeviceIdentity | null> {
+    getByCurve25519Key(curve25519Key: string): Promise<DeviceIdentity | undefined> {
         return this._store.index("byCurve25519Key").get(curve25519Key);
     }
 

src/matrix/storage/idb/stores/GroupSessionDecryptionStore.ts

@@ -35,7 +35,7 @@ export class GroupSessionDecryptionStore {
         this._store = store;
     }
 
-    get(roomId: string, sessionId: string, messageIndex: number): Promise<GroupSessionDecryption | null> {
+    get(roomId: string, sessionId: string, messageIndex: number): Promise<GroupSessionDecryption | undefined> {
         return this._store.get(encodeKey(roomId, sessionId, messageIndex));
     }
 

src/matrix/storage/idb/stores/InboundGroupSessionStore.ts

@@ -46,7 +46,7 @@ export class InboundGroupSessionStore {
         return key === fetchedKey;
     }
 
-    get(roomId: string, senderKey: string, sessionId: string): Promise<InboundGroupSessionEntry | null> {
+    get(roomId: string, senderKey: string, sessionId: string): Promise<InboundGroupSessionEntry | undefined> {
         return this._store.get(encodeKey(roomId, senderKey, sessionId));
     }
 

src/matrix/storage/idb/stores/OlmSessionStore.ts

@@ -62,7 +62,7 @@ export class OlmSessionStore {
         });
     }
 
-    get(senderKey: string, sessionId: string): Promise<OlmSession | null> {
+    get(senderKey: string, sessionId: string): Promise<OlmSession | undefined> {
         return this._store.get(encodeKey(senderKey, sessionId));
     }
 

src/matrix/storage/idb/stores/OutboundGroupSessionStore.ts

@@ -32,7 +32,7 @@ export class OutboundGroupSessionStore {
         this._store.delete(roomId);
     }
 
-    get(roomId: string): Promise<OutboundSession | null> {
+    get(roomId: string): Promise<OutboundSession | undefined> {
         return this._store.get(roomId);
     }
 

src/matrix/storage/idb/stores/RoomMemberStore.ts

@@ -46,7 +46,7 @@ export class RoomMemberStore {
         this._roomMembersStore = roomMembersStore;
     }
 
-    get(roomId: string, userId: string): Promise<MemberStorageEntry | null> {
+    get(roomId: string, userId: string): Promise<MemberStorageEntry | undefined> {
         return this._roomMembersStore.get(encodeKey(roomId, userId));
     }
 

src/matrix/storage/idb/stores/RoomStateStore.ts

@@ -36,7 +36,7 @@ export class RoomStateStore {
         this._roomStateStore = idbStore;
     }
 
-    get(roomId: string, type: string, stateKey: string): Promise<RoomStateEntry | null> {
+    get(roomId: string, type: string, stateKey: string): Promise<RoomStateEntry | undefined> {
         const key = encodeKey(roomId, type, stateKey);
         return this._roomStateStore.get(key);
     }

src/matrix/storage/idb/stores/TimelineEventStore.ts

@@ -301,11 +301,11 @@ export class TimelineEventStore {
         this._timelineStore.put(entry as TimelineEventStorageEntry);
     }
 
-    get(roomId: string, eventKey: EventKey): Promise<TimelineEventEntry | null> {
+    get(roomId: string, eventKey: EventKey): Promise<TimelineEventEntry | undefined> {
         return this._timelineStore.get(encodeKey(roomId, eventKey.fragmentId, eventKey.eventIndex));
     }
 
-    getByEventId(roomId: string, eventId: string): Promise<TimelineEventEntry | null> {
+    getByEventId(roomId: string, eventId: string): Promise<TimelineEventEntry | undefined> {
         return this._timelineStore.index("byEventId").get(encodeEventIdKey(roomId, eventId));
     }
 

src/matrix/storage/idb/stores/TimelineFragmentStore.ts

@@ -83,7 +83,7 @@ export class TimelineFragmentStore {
         this._store.put(fragment);
     }
 
-    get(roomId: string, fragmentId: number): Promise<FragmentEntry | null> {
+    get(roomId: string, fragmentId: number): Promise<FragmentEntry | undefined> {
         return this._store.get(encodeKey(roomId, fragmentId));
     }
 

src/matrix/storage/idb/stores/UserIdentityStore.ts

@@ -28,7 +28,7 @@ export class UserIdentityStore {
         this._store = store;
     }
 
-    get(userId: string): Promise<UserIdentity | null> {
+    get(userId: string): Promise<UserIdentity | undefined> {
         return this._store.get(userId);
     }