import { Difference } from '../types/compare';
/**
 * `If-diff` equality checker.
 */
export declare const checkIfEqual: (source: any, target: any) => boolean;
/**
 * Checks if objects are primitive types.
 */
export declare const oneIsPrimitive: (source: any, target: any) => boolean;
/**
 * Format not matching message for CLI logging.
 */
export declare const formatNotMatchingLog: (message: Difference) => void;