import type { Series, SyncSeries } from '../../controls/types.js';
export declare const uniqueSync: <T>(input: SyncSeries<T>) => Generator<T>;
export declare const uniqueAsync: <T>(input: Series<T>) => AsyncGenerator<Awaited<T>>;
/** Creates a series without duplicated elements. */
export declare namespace unique {
    const sync: <T>(input: SyncSeries<T>) => Generator<T>;
    const async: <T>(input: Series<T>) => AsyncGenerator<Awaited<T>>;
}
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