How to use the regexp-tree/package.json.version function in regexp-tree

import compileModule from '../../../utils/compileModule';
import pkg from 'regexp-tree/package.json';

const ID = 'regexp-tree';

export default {
  id: ID,
  displayName: ID,
  version: pkg.version,
  homepage: pkg.homepage,

  defaultParserID: ID,

  loadTransformer(callback) {
    require([
      '../../../transpilers/babel',
      'regexp-tree',
    ], (transpile, regexpTree) => callback({ transpile: transpile.default, regexpTree }));
  },

  transform({ transpile, regexpTree }, transformCode, code) {
    transformCode = transpile(transformCode);
    let handler = compileModule( // eslint-disable-line no-shadow
      transformCode,
    );

import defaultParserInterface from '../utils/defaultParserInterface';
import pkg from 'regexp-tree/package.json';

const ID = 'regexp-tree';

export default {
  ...defaultParserInterface,

  id: ID,
  displayName: ID,
  version: pkg.version,
  homepage: pkg.homepage,
  locationProps: new Set(['loc']),

  loadParser(callback) {
    require(['regexp-tree'], (regexpTree) => {
      callback(regexpTree);
    });
  },

  parse(regexpTree, code, options={}) {
    regexpTree
      .parser
      .setOptions(options);

    return regexpTree.parse(code);
  },