Fix types for to device messages

src/ClientWidgetApi.ts

@@ -109,6 +109,7 @@ import {
 } from "./interfaces/DownloadFileAction";
 import { IThemeChangeActionRequestData } from "./interfaces/ThemeChangeAction";
 import { IUpdateStateToWidgetRequestData } from "./interfaces/UpdateStateAction";
+import { IToDeviceMessage } from "./interfaces/IToDeviceMessage";
 
 /**
  * API handler for the client side of widgets. This raises events
@@ -1122,13 +1123,12 @@ export class ClientWidgetApi extends EventEmitter {
      *   able to receive the event due to permissions, rejects if the widget
      *   failed to handle the event.
      */
-    public async feedToDevice(rawEvent: IRoomEvent, encrypted: boolean): Promise<void> {
-        if (this.canReceiveToDeviceEvent(rawEvent.type)) {
-            await this.transport.send<ISendToDeviceToWidgetRequestData>(
-                WidgetApiToWidgetAction.SendToDevice,
-                // it's compatible, but missing the index signature
-                { ...rawEvent, encrypted } as ISendToDeviceToWidgetRequestData,
-            );
+    public async feedToDevice(message: IToDeviceMessage, encrypted: boolean): Promise<void> {
+        if (this.canReceiveToDeviceEvent(message.type)) {
+            await this.transport.send<ISendToDeviceToWidgetRequestData>(WidgetApiToWidgetAction.SendToDevice, {
+                ...message,
+                encrypted,
+            });
         }
     }
 

src/interfaces/IRoomAccountData.ts

@@ -17,5 +17,5 @@
 export interface IRoomAccountData {
     type: string;
     room_id: string; // eslint-disable-line camelcase
-    content: unknown;
+    content: Record<string, unknown>;
 }

src/interfaces/IRoomEvent.ts

@@ -21,6 +21,6 @@ export interface IRoomEvent {
     room_id: string; // eslint-disable-line camelcase
     state_key?: string; // eslint-disable-line camelcase
     origin_server_ts: number; // eslint-disable-line camelcase
-    content: unknown;
-    unsigned: unknown;
+    content: Record<string, unknown>;
+    unsigned: Record<string, unknown>;
 }

src/interfaces/IToDeviceMessage.ts

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2025 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface IToDeviceMessage {
+    content: Record<string, unknown>;
+    sender: string;
+    type: string;
+}

src/interfaces/SendToDeviceAction.ts

@@ -17,7 +17,7 @@
 import { IWidgetApiRequest, IWidgetApiRequestData } from "./IWidgetApiRequest";
 import { WidgetApiFromWidgetAction, WidgetApiToWidgetAction } from "./WidgetApiAction";
 import { IWidgetApiResponseData } from "./IWidgetApiResponse";
-import { IRoomEvent } from "./IRoomEvent";
+import { IToDeviceMessage } from "./IToDeviceMessage";
 
 export interface ISendToDeviceFromWidgetRequestData extends IWidgetApiRequestData {
     type: string;
@@ -38,7 +38,7 @@ export interface ISendToDeviceFromWidgetActionResponse extends ISendToDeviceFrom
     response: ISendToDeviceFromWidgetResponseData;
 }
 
-export interface ISendToDeviceToWidgetRequestData extends IWidgetApiRequestData, IRoomEvent {
+export interface ISendToDeviceToWidgetRequestData extends IWidgetApiRequestData, IToDeviceMessage {
     encrypted: boolean;
 }