import { Log } from '../../../types';
import { DeepReadonly } from 'ts-essentials';
import { HookStateMap } from './balancer-hook-event-subscriber';
import { Interface } from '@ethersproject/abi';
import { IDexHelper } from '../../../dex-helper';
import { Logger } from 'log4js';
export declare const StableSurge: {
    type: "StableSurge";
    apiName: "STABLE_SURGE";
};
export type StableSurgeConfig = {
    type: typeof StableSurge.type;
    apiName: typeof StableSurge.apiName;
    factoryAddress: string;
    factoryDeploymentBlock: number;
    hookAddress: string;
};
export type StableSurgePoolSetting = {
    surgeThresholdPercentage?: bigint;
    maxSurgeFeePercentage?: bigint;
};
export type StableSurgeHookState = Record<string, StableSurgePoolSetting>;
/**
 * Retrieve any initial hook state required.
 * @returns
 */
export declare function getStableSurgeHookState(hookInterface: Interface, hookAddress: string, factoryAddress: string, factoryDeploymentBlock: number, dexHelper: IDexHelper, blockNumber: number): Promise<StableSurgeHookState>;
/**
 * Handles the event emitted when threshold surge percentage changed.
 * @param event
 * @param state
 * @param log
 * @returns
 */
export declare function thresholdSurgePercentageChangedEvent(event: any, state: DeepReadonly<HookStateMap>, log: Readonly<Log>, logger: Logger): DeepReadonly<HookStateMap> | null;
/**
 * Handles the event emitted when max surge fee percentage changed.
 * @param event
 * @param state
 * @param log
 * @returns
 */
export declare function maxSurgeFeePercentageChangedEvent(event: any, state: DeepReadonly<HookStateMap>, log: Readonly<Log>): DeepReadonly<HookStateMap> | null;