/**
 * Custom error classes for the Launchpad Monitor package.
 * All errors support the `cause` parameter for error chaining.
 */
/**
 * Base error class for all monitor-related errors.
 * Extends Error to support the `cause` parameter for error chaining.
 */
export declare class MonitorError extends Error {
    readonly cause?: Error;
    constructor(message: string, options?: {
        cause?: Error;
    });
}
/**
 * Thrown when no app with the specified name is found.
 */
export declare class AppNotFoundError extends MonitorError {
    readonly appName: string;
    constructor(appName: string);
}
/**
 * Thrown when appNames parameter has an invalid type.
 */
export declare class InvalidAppNamesError extends MonitorError {
    constructor(message?: string);
}
/**
 * Thrown when no process is found for the specified app.
 */
export declare class ProcessNotFoundError extends MonitorError {
    readonly appName: string;
    constructor(appName: string);
}
/**
 * Thrown when Windows API calls fail.
 */
export declare class WindowsApiError extends MonitorError {
    constructor(options?: {
        cause?: Error;
    });
}
/**
 * Thrown when PM2 operations fail.
 */
export declare class PM2Error extends MonitorError {
    constructor(message: string, options?: {
        cause?: Error;
    });
}
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