/**
 * Network state interface
 */
export type NetworkState = {
    online: boolean;
    downlink?: number;
    downlinkMax?: number;
    effectiveType?: string;
    rtt?: number;
    saveData?: boolean;
    type?: string;
};
/**
 * Hook that tracks the state of browser's network connection
 *
 * @returns Network state
 *
 * @example
 * ```tsx
 * const network = useNetworkState();
 *
 * return (
 *   <div>
 *     <p>Online: {network.online ? 'Yes' : 'No'}</p>
 *     {network.effectiveType && <p>Effective type: {network.effectiveType}</p>}
 *     {network.downlink && <p>Downlink: {network.downlink} Mbps</p>}
 *     {network.rtt && <p>RTT: {network.rtt} ms</p>}
 *   </div>
 * );
 * ```
 */
export declare function useNetworkState(): NetworkState;
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