import { SdkWsProto } from '@openim/protocol';
import type MessageTrigger from './trigger';
import type { MixinApiService } from '../..';
export default class StreamHandler {
    private readonly trigger;
    private readonly api;
    private readonly states;
    constructor(trigger: MessageTrigger, api: MixinApiService);
    handleNotification(message: SdkWsProto.MsgData, operationID: string): Promise<void>;
    private getState;
    private computeLength;
    private commitStateUpdate;
    private syncFromServer;
    private getKey;
    private refreshStateTimer;
    private deleteState;
}