/**
 * Network throttle simulation via CDP.
 *
 * Simulates different network conditions during crawl to test how the app
 * behaves under slow connections. Useful for detecting loading states, error
 * handling, and performance degradation on poor networks.
 *
 * Conditions mirror Chrome DevTools presets:
 * - slow3g: ~500kbps download, high latency
 * - fast3g: ~1.6Mbps download, medium latency
 * - 4g: ~9Mbps download, low latency
 * - offline: no connectivity
 * - none: no throttle (default)
 */
export type NetworkConditionPreset = 'none' | 'slow3g' | 'fast3g' | '4g' | 'offline';
export declare function applyNetworkThrottle(cdpSession: any, preset: NetworkConditionPreset): Promise<void>;
export declare function clearNetworkThrottle(cdpSession: any): Promise<void>;
export interface ThrottledCrawlOpts {
    /** Network preset to apply during this URL's crawl */
    preset: NetworkConditionPreset;
    /** Restore to 'none' after navigation (default: true) */
    restoreAfter?: boolean;
}
/** Apply throttle, run fn, restore. Returns fn's result. */
export declare function withNetworkThrottle<T>(cdpSession: any, preset: NetworkConditionPreset, fn: () => Promise<T>, restoreAfter?: boolean): Promise<T>;