RTCStatsType
type RTCStatsType =
| "candidate-pair"
| "certificate"
| "codec"
| "csrc"
| "data-channel"
| "inbound-rtp"
| "local-candidate"
| "media-source"
| "outbound-rtp"
| "peer-connection"
| "remote-candidate"
| "remote-inbound-rtp"
| "remote-outbound-rtp"
| "track"
| "transport";