import { AbiItem } from 'web3-utils';
import { EventLog } from 'web3-core';
export declare type EventTransformer = (event: EventLog) => EventLog;
/**
 * Factory for event transformer closure.
 * This function has custom logic to transform event fields based on ABI types.
 * Currently supported transformations:
 *   - address fields are lower cased
 *
 * @param abi
 */
export declare function getEventTransformer<T extends EventLog>(abi: AbiItem[]): (event: T) => T;