import { IZDataMatch } from './data-match.mjs';
/**
 * Represents a data match that forwards to an inner match if the filter is null or undefined.
 *
 * @param TData -
 *        The type of data being matched.
 * @param TFilter -
 *        The type of filter performing the match.
 */
export declare class ZDataMatchOptional<TData, TFilter> implements IZDataMatch<TData, TFilter | undefined | null> {
    private _match;
    /**
     * Initializes a new instance of this object.
     *
     * @param _match -
     *        The inner match object which does not support
     *        null or undefined filters.
     */
    constructor(_match: IZDataMatch<TData, TFilter>);
    /**
     * Gets whether the given data matches the given filter.
     *
     * @param data -
     *        The data to check.
     * @param filter -
     *        The filter to match against.
     *
     * @returns
     *        True if filter is null or undefined.  Otherwise,
     *        the result from the inner match with data and filter
     *        is returned.
     */
    match(data: TData, filter: TFilter | undefined | null): boolean;
}