import { IHookStateInitAction } from './misc/hookState';
export interface INetworkInformation extends EventTarget {
    readonly downlink: number;
    readonly downlinkMax: number;
    readonly effectiveType: 'slow-2g' | '2g' | '3g' | '4g';
    readonly rtt: number;
    readonly saveData: boolean;
    readonly type: 'bluetooth' | 'cellular' | 'ethernet' | 'none' | 'wifi' | 'wimax' | 'other' | 'unknown';
    onChange: (event: Event) => void;
}
export interface IUseNetworkState {
    /**
     * @desc Whether browser connected to the network or not.
     */
    online: boolean | undefined;
    /**
     * @desc Previous value of `online` property. Helps to identify if browser
     * just connected or lost connection.
     */
    previous: boolean | undefined;
    /**
     * @desc The {Date} object pointing to the moment when state change occurred.
     */
    since: Date | undefined;
    /**
     * @desc Effective bandwidth estimate in megabits per second, rounded to the
     * nearest multiple of 25 kilobits per seconds.
     */
    downlink: INetworkInformation['downlink'] | undefined;
    /**
     * @desc Maximum downlink speed, in megabits per second (Mbps), for the
     * underlying connection technology
     */
    downlinkMax: INetworkInformation['downlinkMax'] | undefined;
    /**
     * @desc Effective type of the connection meaning one of 'slow-2g', '2g', '3g', or '4g'.
     * This value is determined using a combination of recently observed round-trip time
     * and downlink values.
     */
    effectiveType: INetworkInformation['effectiveType'] | undefined;
    /**
     * @desc Estimated effective round-trip time of the current connection, rounded
     * to the nearest multiple of 25 milliseconds
     */
    rtt: INetworkInformation['rtt'] | undefined;
    /**
     * @desc {true} if the user has set a reduced data usage option on the user agent.
     */
    saveData: INetworkInformation['saveData'] | undefined;
    /**
     * @desc The type of connection a device is using to communicate with the network.
     * It will be one of the following values:
     *  - bluetooth
     *  - cellular
     *  - ethernet
     *  - none
     *  - wifi
     *  - wimax
     *  - other
     *  - unknown
     */
    type: INetworkInformation['type'] | undefined;
}
export default function useNetworkState(initialState?: IHookStateInitAction<IUseNetworkState>): IUseNetworkState;