/// <reference types="node" />
import { OutPoint, Script, Value } from '@node-dlc/bitcoin';
import { BitcoindClient, BlockSummary } from '@node-dlc/bitcoind';
import { EventEmitter } from 'events';
export declare class BlockWatcher extends EventEmitter {
    /**
     * Outpoints that are being watched
     */
    watchedOutPoints: Map<string, OutPoint>;
    /**
     * ScriptPubKeys that are being watched
     */
    watchedScriptPubKeys: Map<string, [Script, Value]>;
    receivedBlocks: Map<string, BlockSummary>;
    previousHashToHash: Map<string, string>;
    private _client;
    /**
     * TxWatcher listens for transactions that match certain patterns
     * and events when a transaction is found matching the pattern
     *
     * @param client
     */
    constructor(client: BitcoindClient);
    /**
     * Starts watching for transactions
     */
    start(latestBlock: BlockSummary): void;
    /**
     * Stops watching for transactions
     */
    stop(): void;
    /**
     * Watches an outpoint for broadcase in a new transaction
     * @param outpoint
     */
    watchOutpoint(outpoint: OutPoint): void;
    /**
     * Watches a scriptpubkey for broadcast in a new transaction
     * @param scriptPubKey
     * @param value
     */
    watchScriptPubKey(scriptPubKey: Script, value?: Value): void;
    private _checkOutpoints;
    private _checkScriptPubkeys;
    private _onRawBlock;
    private _processBlock;
    private _findPreviousBlockAndProcess;
}