import { Logger } from 'winston';
import { IAuthorizonConfig } from '../config';
import { Context, ContextStore } from '../utils/context';
import { IAction, IResource, IUser } from './interfaces';
export interface IEnforcer {
    isAllowed(user: IUser | string, action: IAction, resource: IResource, context?: Context): Promise<boolean>;
}
/**
 * this client is dealing with evaluation of isAllowed() queries.
 */
export declare class Enforcer implements IEnforcer {
    private config;
    private logger;
    contextStore: ContextStore;
    private client;
    constructor(config: IAuthorizonConfig, logger: Logger);
    /**
     * Usage:
     *
     * // with (resource, action):
     * const user = { key: 'UNIQUE_USER_ID' };
     * authorizon.is_allowed(user, 'get', {'type': 'task', 'id': '23'})
     * authorizon.is_allowed(user, 'get', {'type': 'task'})
     *
     * // with (url, method):
     * const { resource, action } = authorizon.getUrlContext('/lists/3/todos/37', 'GET');
     * authorizon.is_allowed(user, action, resource)
     *
     * @param user
     * @param action
     * @param resource
     * @param context
     *
     * @returns whether or not action is allowed for given user
     */
    isAllowed(user: IUser | string, action: IAction, resource: IResource, context?: Context): Promise<boolean>;
    private static normalizeResource;
    private static resourceRepr;
    getMethods(): IEnforcer;
}