import type { Express } from 'express';
export interface CdpTargetInfo {
    id?: string;
    targetId?: string;
    type: string;
    url: string;
    attached: boolean;
}
export interface CdpLike {
    send(method: string, params?: unknown, sessionId?: string): Promise<unknown>;
}
export declare function findSliccPageTarget(targets: CdpTargetInfo[], pageUrlPrefix: string): CdpTargetInfo | null;
export type RestartResult = {
    ok: true;
} | {
    ok: false;
    code: 'NO_LEADER_TAB' | 'CDP_NOT_READY' | 'CDP_ERROR' | 'INTERNAL';
    message: string;
};
export declare function restartLeader(cdp: CdpLike, pageUrlPrefix: string): Promise<RestartResult>;
/**
 * HTTP-backed CdpLike. Implements Target.getTargets via the CDP HTTP /json
 * endpoint. Target.attachToTarget + Page.reload are sent over WebSocket.
 */
export declare function createHttpCdp(cdpPort: number): CdpLike;
export declare function registerLeaderRestartEndpoint(app: Express, options: {
    cdp: CdpLike;
    pageUrlPrefix: string;
}): void;