epubavocado/lib/esm/xpath.js

I am an EPUB object model aspiring to be standards compliant.

import { useNamespaces } from 'xpath';
export const namespaceMap = {
    xml: 'http://www.w3.org/XML/1998/namespace',
    opf: 'http://www.idpf.org/2007/opf',
    dc: 'http://purl.org/dc/elements/1.1/',
    ocf: 'urn:oasis:names:tc:opendocument:xmlns:container',
};
export const selectAll = useNamespaces(namespaceMap);
export const select = function (expression, node) {
    return selectAll(expression, node, true);
};
/**
 * inverse of `namespaceMap`
 * ```
 *  {
 *    'http://www.idpf.org/2007/opf': 'opf',
 *    ...
 *  }
 * ```
 */
export const prefixMap = Object.assign({}, ...Object.entries(namespaceMap).map(([prefix, namespace]) => ({
    [namespace]: prefix,
})));