"use strict";
  const { addConstants } = require("../utils");
  
  module.exports = function (core) {
    // https://dom.spec.whatwg.org/#interface-nodefilter
    core.NodeFilter = function () {
      throw new TypeError("Illegal constructor");
    };
  
    /**
     * Returns an unsigned short that will be used to tell if a given Node must
     * be accepted or not by the NodeIterator or TreeWalker iteration
     * algorithm. This method is expected to be written by the user of a
     * NodeFilter.
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/API/NodeFilter
     * @interface
     *
     * @param  {Node} node DOM Node
     * @return {FILTER_ACCEPT|FILTER_REJECT|FILTER_SKIP}
     */
    core.NodeFilter.acceptNode = function (/* node */) {
      throw new Error("This method is expected to be written by the user of a NodeFilter.");
    };
  
    addConstants(core.NodeFilter, {
      // Constants for whatToShow
      SHOW_ALL: 0xFFFFFFFF,
      SHOW_ELEMENT: 0x00000001,
      SHOW_ATTRIBUTE: 0x00000002,
      SHOW_TEXT: 0x00000004,
      SHOW_CDATA_SECTION: 0x00000008,
      SHOW_ENTITY_REFERENCE: 0x00000010,
      SHOW_ENTITY: 0x00000020,
      SHOW_PROCESSING_INSTRUCTION: 0x00000040,
      SHOW_COMMENT: 0x00000080,
      SHOW_DOCUMENT: 0x00000100,
      SHOW_DOCUMENT_TYPE: 0x00000200,
      SHOW_DOCUMENT_FRAGMENT: 0x00000400,
      SHOW_NOTATION: 0x00000800,
  
      // Constants returned by acceptNode
      FILTER_ACCEPT: 1,
      FILTER_REJECT: 2,
      FILTER_SKIP: 3
    });
  };