import type { YobtaMaybe } from '../_types/YobtaMaybe.js';
import type { YobtaOptionaUnknownArray } from '../_types/YobtaOptionaUnknownArray.js';
import type { YobtaSyncRule } from '../rule/rule.js';
export declare const uniqueMessage = "It should contain unique items";
export declare function unique<I extends YobtaOptionaUnknownArray>(message?: string): YobtaSyncRule<I, YobtaMaybe<I, I>>;
//# sourceMappingURL=unique.d.ts.map