import { Chain } from "../types/chain.js";
import { Transport } from "../types/transport.js";
import { Client } from "../types/client.js";
import { GetBlockCountReturnType } from "./getBlockCount.js";

//#region src/actions/watchBlockNumber.d.ts
type OnBlockNumberParameter = GetBlockCountReturnType;
type OnBlockNumberFn = (blockNumber: OnBlockNumberParameter, prevBlockNumber: OnBlockNumberParameter | undefined) => Promise<void>;
type WatchBlockNumberParameters = {
  /** The callback to call when a new block number is received. */onBlockNumber: OnBlockNumberFn; /** The callback to call when an error occurred when trying to get for a new block. */
  onError?: ((error: Error) => void) | undefined;
} & {
  /** Whether or not to emit the missed block numbers to the callback. */emitMissed?: boolean | undefined; /** Whether or not to emit the latest block number to the callback when the subscription opens. */
  emitOnBegin?: boolean | undefined; /** Polling frequency (in ms). Defaults to Client's pollingInterval config. */
  pollingInterval?: number | undefined;
};
type WatchBlockNumberReturnType = () => void;
/**
* Watches and returns incoming block numbers.
* @param client - Client to use
* @param parameters - {@link WatchBlockNumberParameters}
* @returns A function that can be invoked to stop watching for new block numbers. {@link WatchBlockNumberReturnType}
*/
declare function watchBlockNumber<chain extends Chain | undefined, transport extends Transport>(client: Client<transport, chain>, {
  emitOnBegin,
  emitMissed,
  onBlockNumber,
  onError,
  pollingInterval
}: WatchBlockNumberParameters): WatchBlockNumberReturnType;
//#endregion
export { OnBlockNumberFn, OnBlockNumberParameter, WatchBlockNumberParameters, WatchBlockNumberReturnType, watchBlockNumber };
//# sourceMappingURL=watchBlockNumber.d.ts.map