/**
 * A sliding window reordering helper class.
 *
 * This class takes tuples (value, sequence_number) and a callback that should be
 * called as `callback(value)` but in order of sequence_number.  If a sequence
 * number is received out of order, it puts it into a holding list to be dispatched
 * at the appropriate time.
 */
export declare class SlidingWindowReorderer<T> {
    private nextExpected;
    private onHold;
    private callback;
    constructor(callback: (value: T) => void | Promise<void>);
    call(value: T, sequence: number | null): void;
    private tryDispatchInOrder;
}