eth-block-tracker/dist/PollingBlockTracker.d.ts

A block tracker for the Ethereum blockchain. Keeps track of the latest block.

import type { SafeEventEmitterProvider } from '@metamask/eth-json-rpc-provider';
import SafeEventEmitter from '@metamask/safe-event-emitter';
import type { BlockTracker } from './BlockTracker';
export interface PollingBlockTrackerOptions {
    provider?: SafeEventEmitterProvider;
    pollingInterval?: number;
    retryTimeout?: number;
    keepEventLoopActive?: boolean;
    setSkipCacheFlag?: boolean;
    blockResetDuration?: number;
    usePastBlocks?: boolean;
}
export declare class PollingBlockTracker extends SafeEventEmitter implements BlockTracker {
    private _isRunning;
    private readonly _blockResetDuration;
    private readonly _usePastBlocks;
    private _currentBlock;
    private _blockResetTimeout?;
    private readonly _provider;
    private readonly _pollingInterval;
    private readonly _retryTimeout;
    private readonly _keepEventLoopActive;
    private readonly _setSkipCacheFlag;
    constructor(opts?: PollingBlockTrackerOptions);
    destroy(): Promise<void>;
    isRunning(): boolean;
    getCurrentBlock(): string | null;
    getLatestBlock(): Promise<string>;
    removeAllListeners(eventName?: string | symbol): this;
    private _setupInternalEvents;
    private _onNewListener;
    private _onRemoveListener;
    private _maybeStart;
    private _maybeEnd;
    private _getBlockTrackerEventCount;
    private _shouldUseNewBlock;
    private _newPotentialLatest;
    private _setCurrentBlock;
    private _setupBlockResetTimeout;
    private _cancelBlockResetTimeout;
    private _resetCurrentBlock;
    checkForLatestBlock(): Promise<string>;
    private _start;
    private _end;
    private _synchronize;
    private _updateLatestBlock;
    private _fetchLatestBlock;
}