/**
 * PID file operation utilities
 * Responsibility: Low-level PID file read/write/delete operations
 */
import type { PidFileOptions } from './types.js';
/**
 * Get PID file path
 */
export declare function getPidFilePath(options?: PidFileOptions): string;
/**
 * Write PID file
 */
export declare function writePidFile(pid: number, options?: PidFileOptions): void;
/**
 * Read PID file
 */
export declare function readPidFile(options?: PidFileOptions): number | null;
/**
 * Remove PID file
 */
export declare function removePidFile(options?: PidFileOptions): void;
/**
 * Check if PID file exists
 */
export declare function pidFileExists(options?: PidFileOptions): boolean;
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