/// <amd-module name="file:///home/runner/work/hyperliquid/hyperliquid/src/api/explorer/_methods/explorerBlock.ts" />
import * as v from "valibot";
/**
 * Subscription to explorer block events.
 * @see https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/websocket/subscriptions
 */
export declare const ExplorerBlockRequest: v.ObjectSchema<{
    /** Type of subscription. */
    readonly type: v.LiteralSchema<"explorerBlock", undefined>;
}, undefined>;
export type ExplorerBlockRequest = v.InferOutput<typeof ExplorerBlockRequest>;
/**
 * Event of array of block details.
 * @see https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/websocket/subscriptions
 */
export type ExplorerBlockEvent = {
    /** Block creation timestamp. */
    blockTime: number;
    /**
     * Block hash.
     * @pattern ^0x[a-fA-F0-9]{64}$
     */
    hash: `0x${string}`;
    /** Block height in chain. */
    height: number;
    /** Total transactions in block. */
    numTxs: number;
    /**
     * Block proposer address.
     * @pattern ^0x[a-fA-F0-9]{40}$
     */
    proposer: `0x${string}`;
}[];
import type { ISubscription, ISubscriptionTransport, TransportError } from "../../../transport/mod.js";
import type { ExplorerConfig } from "./_base/mod.js";
/**
 * Subscribe to explorer block updates.
 *
 * @param config General configuration for Explorer API subscriptions.
 * @param listener A callback function to be called when the event is received.
 * @param onError An optional callback function to be called when the subscription fails.
 * @return A request-promise that resolves with a {@link ISubscription} object to manage the subscription lifecycle.
 *
 * @throws {ValidationError} When the request parameters fail validation (before sending).
 * @throws {TransportError} When the transport layer throws an error.
 *
 * @example
 * ```ts
 * import { WebSocketTransport } from "@nktkas/hyperliquid";
 * import { explorerBlock } from "@nktkas/hyperliquid/api/explorer";
 *
 * const transport = new WebSocketTransport({ url: "wss://rpc.hyperliquid.xyz/ws" }); // only `WebSocketTransport` supports this API
 *
 * const sub = await explorerBlock(
 *   { transport },
 *   (data) => console.log(data),
 * );
 * ```
 *
 * @see https://hyperliquid.gitbook.io/hyperliquid-docs/for-developers/api/websocket/subscriptions
 */
export declare function explorerBlock(config: ExplorerConfig<ISubscriptionTransport>, listener: (data: ExplorerBlockEvent) => void, onError?: (error: TransportError) => void): Promise<ISubscription>;