import type { SimpleFeatureSerialized } from '../../util/index.ts';
import type { ErrorState, SeqState } from '../util.tsx';
export declare function useSequenceData({ feature, sequence, }: {
    feature: SimpleFeatureSerialized;
    sequence?: SeqState | ErrorState;
}): {
    seq: string;
    upstream: string | undefined;
    downstream: string | undefined;
    cds: any[];
    exons: any[];
    utr: any[];
} | undefined;