import { BitcoindClient, BlockHeader } from '@node-dlc/bitcoind';
import { BlockDiffResult } from './BlockDiffResult';
export declare class BlockDiffer {
    readonly bitcoind: BitcoindClient;
    constructor(bitcoind: BitcoindClient);
    /**
     * This method is used to construct the required block disconnects
     * and connects need to resync to the tip of the best blockchain even
     * if the prior header is now stale.
     *
     * For example, if the previous header was 4b and our current best
     * block header is 5c, we have a common ancestor of 2a and require
     * disconnecting 4b and 3b and connecting 3c, 4c, and 5c.
     *
     *      5c
     *      |
     *      4c  4b
     *      |   |
     *      3c  3b
     *      \   /
     *        2a
     *        |
     *        1a
     *        |
     *        0a
     *
     * If no fork is detected, we should expect to simply connect blocks
     * in the new best block chain.
     *
     * @param currentHeader best block header
     * @param priorHeader prior known header
     * @returns Actions needed to resolve a block difference
     */
    diff(currentHeader: BlockHeader, priorHeader: BlockHeader): Promise<BlockDiffResult>;
}