Port the rest of the code

src/types/stream-stats.d.ts

@@ -0,0 +1,18 @@
+type RTCBasicStat = {
+    address: string,
+    bytesReceived: number,
+    clockRate: number,
+    codecId: string,
+    framesDecoded: number,
+    id: string,
+    kind: string,
+    mimeType: string,
+    packetsReceived: number,
+    profile: string,
+    remoteCandidateId: string,
+    sdpFmtpLine: string,
+    state: string,
+    timestamp: number,
+    totalDecodeTime: number,
+    type: string,
+}