Improve types for sendEvent (#12335)

src/@types/matrix-js-sdk.d.ts

@@ -19,8 +19,9 @@ import type { BLURHASH_FIELD } from "../utils/image-media";
 import type { JitsiCallMemberEventType, JitsiCallMemberContent } from "../call-types";
 import type { ILayoutStateEvent, WIDGET_LAYOUT_EVENT_TYPE } from "../stores/widgets/types";
 import type { VoiceBroadcastInfoEventContent, VoiceBroadcastInfoEventType } from "../voice-broadcast/types";
+import type { EncryptedFile } from "matrix-js-sdk/src/types";
 
-// Matrix JS SDK extensions
+// Extend Matrix JS SDK types via Typescript declaration merging to support unspecced event fields and types
 declare module "matrix-js-sdk/src/types" {
     export interface FileInfo {
         /**
@@ -50,4 +51,35 @@ declare module "matrix-js-sdk/src/types" {
         };
         "m.room.bot.options": unknown;
     }
+
+    export interface TimelineEvents {
+        "io.element.performance_metric": {
+            "io.element.performance_metrics": {
+                forEventId: string;
+                responseTs: number;
+                kind: "send_time";
+            };
+        };
+    }
+
+    export interface AudioContent {
+        // MSC1767 + Ideals of MSC2516 as MSC3245
+        // https://github.com/matrix-org/matrix-doc/pull/3245
+        "org.matrix.msc1767.text"?: string;
+        "org.matrix.msc1767.file"?: {
+            url?: string;
+            file?: EncryptedFile;
+            name: string;
+            mimetype: string;
+            size: number;
+        };
+        "org.matrix.msc1767.audio"?: {
+            duration: number;
+            // https://github.com/matrix-org/matrix-doc/pull/3246
+            waveform?: number[];
+        };
+        "org.matrix.msc3245.voice"?: {};
+
+        "io.element.voice_broadcast_chunk"?: { sequence: number };
+    }
 }