import { HDict, HGrid } from 'haystack-core';
import { Client, Watch } from 'haystack-nclient';
export declare const DEFAULT_USER_ROLE_TAG_NAME = "uiElementPermissions";
export interface ResolverData {
    /**
     * Haystack client for network communication
     */
    client: Client;
    /**
     * Current user dict, used to check permissions
     */
    user?: HDict;
    /**
     * Name of the tag that is expected on the user dict to define its role
     */
    userRoleTagName?: string;
    /**
     * Function name to be used for expressions eval,
     * used to enable custom backend permission check using elements path
     * @example
     * customEval(\`page/section/elementName\`, parametersDict)
     */
    evalFuncName?: string;
}
/**
 * Resolver is a mediator for the network interactions during the resolution process,
 * in order to enable future optimizations and extra features
 */
export declare class Resolver implements ResolverData {
    constructor({ client, user, userRoleTagName, evalFuncName, }: ResolverData);
    client: Client;
    user?: HDict;
    userRoleTagName?: string;
    evalFuncName?: string;
    read(filter: string): Promise<HGrid<HDict>>;
    makeWatch(dis: string, grid: HGrid<HDict>): Promise<Watch>;
    /**
     * Eval an expression using either the provided path or otherwse directly the expression
     * Providing the path allows for whitelisting of certain functions to specific user roles
     */
    evalExprElement(expr: string, parameters: HDict, path?: string): Promise<HGrid<HDict>>;
    private _buildExpression;
    /**
     * Evaluate an expression
     */
    private _eval;
}