Update dependency typescript to v5.9.3 (#30492)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

test/setup/setupManualMocks.ts

@@ -64,7 +64,8 @@ global.URL.revokeObjectURL = jest.fn();
 
 // polyfilling TextEncoder as it is not available on JSDOM
 // view https://github.com/facebook/jest/issues/9983
-global.TextEncoder = TextEncoder;
+// XXX: Node's implementation has marginally different types, so we fudge it
+(globalThis as any).TextEncoder = TextEncoder;
 // @ts-ignore
 global.TextDecoder = TextDecoder;
 

test/unit-tests/audio/VoiceMessageRecording-test.ts

@@ -118,7 +118,7 @@ describe("VoiceMessageRecording", () => {
         const encryptedFile = {} as unknown as EncryptedFile;
 
         beforeEach(() => {
-            voiceRecording.onDataAvailable!(testBuf);
+            voiceRecording.onDataAvailable!(testBuf.buffer);
         });
 
         it("contentLength should return the buffer length", () => {

test/unit-tests/utils/MegolmExportEncryption-test.ts

@@ -59,8 +59,8 @@ const TEST_VECTORS = [
     ],
 ];
 
-function stringToArray(s: string): ArrayBufferLike {
-    return new TextEncoder().encode(s).buffer;
+function stringToArray(s: string): ArrayBuffer {
+    return new TextEncoder().encode(s).buffer as ArrayBuffer;
 }
 
 describe("MegolmExportEncryption", function () {