export declare function readGatewayProcessArgsSync(pid: number): string[] | null;
export declare function signalVerifiedGatewayPidSync(pid: number, signal: 'SIGTERM' | 'SIGUSR1'): void;
export declare function findGatewayPidsOnPortSync(port: number): number[];
export declare function findVerifiedGatewayListenerPidsOnPortSync(port: number): number[];
export declare function formatGatewayPidList(pids: number[]): string;
