import { BBI } from './bbi';
import { BlockView } from './block-view';
import type { RequestOptions } from './types';
export declare class BigWig extends BBI {
    /**
     * Retrieves a BlockView of a specific zoomLevel
     *
     * @param scale - number
     *
     * @param opts - An object containing basesPerSpan (e.g. pixels per basepair)
     * or scale used to infer the zoomLevel to use
     */
    protected getView(scale: number, opts: RequestOptions): Promise<BlockView>;
}