import { ResetSignal } from '../reset/ResetSignal';
/**
 * @description Returns unique option as long as it is available; otherwise, throw Error.
 * @throws Error
 */
export declare function unique<T>(options: T[]): Generator<T, never, ResetSignal>;
export declare function unique<T>(options: T): Generator<T, never, ResetSignal>;
export declare function unique<T>(...options: T[]): Generator<T, never, ResetSignal>;
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