부모 컴포넌트

const refs = {
    localVideoRef: useRef(null),
    socketRef: useRef(null),
    pcRef: useRef(null),
    remoteVideoRef: useRef(null),
  };

자식 컴포넌트

const Socket = forwardRef((props, ref) => {
  const { localVideoRef, socketRef, pcRef, remoteVideoRef } = ref;
  ...
};