/**
 * Type for SyncError details with specific fields for different error contexts
 */
interface SyncErrorDetails {
    project?: string;
    action?: string;
    path?: string;
}
/**
 * Custom error class for sync-rules operations with built-in details support.
 */
export declare class SyncError extends Error {
    readonly details: SyncErrorDetails;
    constructor(message: string, details?: SyncErrorDetails, cause?: Error);
}
/**
 * Error thrown when config file is not found.
 */
export declare class ConfigNotFoundError extends Error {
    readonly path: string;
    readonly isDefault: boolean;
    constructor(path: string, isDefault?: boolean);
}
/**
 * Error thrown when config file cannot be accessed (permissions, not a file, etc.)
 */
export declare class ConfigAccessError extends Error {
    readonly path: string;
    readonly originalError?: Error;
    constructor(path: string, originalError?: Error);
}
/**
 * Error thrown when config file cannot be parsed or is invalid.
 */
export declare class ConfigParseError extends Error {
    readonly path: string;
    readonly originalError?: Error;
    constructor(path: string, originalError?: Error);
}
/**
 * Error thrown when a subprocess spawn fails.
 */
export declare class SpawnError extends Error {
    readonly command: string;
    readonly exitCode?: number;
    readonly code?: string;
    readonly signal?: string;
    constructor(command: string, code?: string, exitCode?: number, signal?: string, cause?: Error);
    /**
     * Builds the appropriate error message based on the error conditions.
     * Centralizes all spawn error message strings in one place.
     */
    static buildMessage(command: string, code?: string, exitCode?: number, signal?: string): string;
}
/**
 * Ensures that an unknown caught value is an Error object.
 * @param error - The unknown value to ensure is an Error
 */
export declare function ensureError(error: unknown): Error;
/**
 * Type guard to safely check if an error is a Node.js ErrnoException
 * @param error - The error to check
 */
export declare function isNodeError(error: unknown): error is NodeJS.ErrnoException;
export {};