import { Element } from 'libxmljs2';
type ElementPredicate = (e: Element) => boolean;
type Query = string | string[] | ElementPredicate;
export declare function queryAncestors(element: Element, query: Query): Element | undefined;
export declare const byLocalName: (...names: string[]) => (element: Element) => boolean;
export declare const byAttribute: (name: string, value: string) => (element: Element) => boolean;
export declare const hasAttribute: (name: string) => (element: Element) => boolean;
/**
 * Gets the value of an attribute from an XML element or returns a default
 * value. If the attribute doesn't exist and a default value isn't provided, it
 * will throw an Error.
 */
export declare function getAttribute<T = string>(name: string, element: Element, defaultValue?: T): string | T;
/**
 * Gets the value of an attribute from an XML element converted to a number or
 * returns a default value. If the attribute doesn't exist and a default value
 * isn't provided, it will throw an Error.
 */
export declare function getNumericAttribute<T = number>(name: string, element: Element, defaultValue?: T): number | T;
/** Helper function for generating `(.//e:foo | .//e:bar | .//e:baz)`-like XPath selectors. */
export declare function xpathOr(names: readonly string[]): string;
export declare function getAnswerOptions(answer: Element): Element[];
export {};
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