/**
 * Port Inspection - Cross-platform port usage detection
 *
 * Provides utilities to:
 * - Check if a port is in use
 * - Identify which process is listening
 * - Classify whether a listener is the gateway
 */
export type PortUsageStatus = 'free' | 'busy' | 'unknown';
export interface PortListener {
    pid?: number;
    ppid?: number;
    command?: string;
    commandLine?: string;
    address?: string;
}
export interface PortUsage {
    port: number;
    status: PortUsageStatus;
    listeners: PortListener[];
    hints: string[];
    errors?: string[];
}
export type PortListenerKind = 'gateway' | 'other' | 'unknown';
/** Inspect port usage: check if busy and identify listeners */
export declare function inspectPortUsage(port: number): Promise<PortUsage>;
/** Classify whether a port listener belongs to the gateway */
export declare function classifyPortListener(listener: PortListener, runtimePid?: number): PortListenerKind;
/** Format port diagnostics for display */
export declare function formatPortDiagnostics(usage: PortUsage): string[];