interface Navigator {
  connection?: NetworkInformation;
}

interface NetworkInformation extends EventTarget {
  type: NetworkInformationConnectionType;
  saveData?: boolean;
  effectiveType?: string;
  downlink?: number;
  downlinkMax?: number;
  rtt?: number;
}

type NetworkInformationConnectionType =
  | "bluetooth"
  | "cellular"
  | "ethernet"
  | "none"
  | "other"
  | "unknown"
  | "wifi"
  | "wimax";