import { FontoxpathOptions, XqueryModules, XqueryResult } from '../types';
export declare function evaluateUpdatingExpressionOnNode(modules: XqueryModules, contextNode: Node | null, variables: object, options: FontoxpathOptions): Promise<{
    isUpdating: boolean;
    returnValue: XqueryResult<{
        [key: string]: XqueryResult<any>;
    }>[];
}>;
export declare function startChildProcess(): void;