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import request from './utils/request.js';import * as cheerio from 'cheerio';import { BASE_URL } from './constants.js';
const PLAYSTORE_URL = `${BASE_URL}/store/apps`;const CATEGORY_URL_PREFIX = '/store/apps/category/';
function categories (opts) {  opts = Object.assign({}, opts);
  return new Promise(function (resolve, reject) {    const options = Object.assign(      {        url: PLAYSTORE_URL      },      opts.requestOptions    );
    request(options, opts.throttle)      .then(cheerio.load)      .then(extractCategories)      .then(resolve)      .catch(reject);  });}
function extractCategories ($) {  const categoryIds = $('ul li a')    .toArray()    .map((el) => $(el).attr('href'))    .filter((url) => url.startsWith(CATEGORY_URL_PREFIX) && !url.includes('?age='))    .map((url) => url.substr(CATEGORY_URL_PREFIX.length));  categoryIds.push('APPLICATION');
  return categoryIds;}
export default categories;