import 'reflect-metadata';
import { IDataObject } from 'n8n-workflow';
export declare enum Scope {
    ALL = "ALL",
    EXECUTION = "EXECUTION",
    WORKFLOW = "WORKFLOW",
    INSTANCE = "INSTANCE"
}
export declare enum EventType {
    ANY = "ANY",
    ADDED = "added",
    UPDATED = "updated",
    DELETED = "deleted"
}
export declare class KvStorageService {
    private map;
    private mapExpiration;
    private workflowListenersMap;
    private instanceListeners;
    private executionListeners;
    private allListeners;
    constructor();
    private deleteExpiredEntries;
    listAllKeyValuesInAllScopes(): IDataObject;
    listAllKeysInScope(scope: Scope, specifier?: string): IDataObject;
    listAllKeyValuesInScope(scope: Scope, specifier?: string): IDataObject;
    deleteKeyWithScopedKey(scopedKey: string): IDataObject;
    deleteKey(key: string, scope: Scope, specifier?: string): IDataObject;
    getValue(key: string, scope: Scope, specifier?: string): IDataObject;
    incrementValue(key: string, scope: Scope, specifier?: string, ttl?: number): IDataObject;
    setValue(key: string, val: string, scope: Scope, specifier?: string, ttl?: number): IDataObject;
    private sendEvent;
    private composeScopeKey;
    private getKey;
    private getScope;
    private getSpecifier;
    addListener(scope: Scope, specifier: string, callback: (a: IDataObject) => void): void;
    removeListener(scope: Scope, specifier: string, callback: (a: IDataObject) => void): void;
}