import { EventLog, Log, FeeData } from "ethers";
/**
 * Fetches the current gas fee data from the Amoy Gas Station API.
 * @param url Amoy gas station API URL.
 * @returns Current gas fee information or `null` (to align with ethers
 * `getFeeData` method return type)
 */
export declare function getFeeData(chainName: string): Promise<FeeData>;
/**
 * Helpers to parse logs from a transaction receipt and ensure only `EventLog`
 * types are returned.
 * @param log Response from awaiting transaction receipt.
 * @returns Array of `EventLog` types.
 */
export declare function isEventLog(log: EventLog | Log): log is EventLog;
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