/**
 * Checks if the argument passed is an object
 */
export declare const isObj: <T>(x: T) => boolean;
/**
 * Determine if two objects are equal
 */
export declare const equal: <T extends object, U extends Record<string, unknown>>(a: T, b: U) => boolean;
/**
 * Comparer helpers
 */
export declare const composeComparers: <T>(previousComparer: (a: T, b: T) => number, currentComparer: (a: T, b: T) => number) => ((a: T, b: T) => number);
export declare const keyComparer: <T>(_keySelector: (key: T) => string, descending?: boolean) => ((a: T, b: T) => number);