code: function transform(wanted, available) {
    const browsers = new Set();
  
    wanted.forEach((browser) => {
      const name = browser.name.toLowerCase();
  
      if (!available.has(name)) {
        throw new Error(`Browser ${name} is not available`);
      }
  
      let list = available.get(name).slice().sort(compare);
      let platforms = browser.platform;
  
      if (platforms === undefined) {
        //
        // Remove all duplicate versions.
        //
        const filtered = [list[0]];
        for (let i = 1; i < list.length; i++) {
          if (list[i].short_version !== list[i - 1].short_version) {
            filtered.push(list[i]);
          }
        }
        list = filtered;
      } else {
        if (!Array.isArray(platforms)) platforms = [platforms];
        //
        // Filter out unwanted platforms.
        //
        platforms = platforms.map((el) => String(el).toLowerCase());
        list = list.filter((el) => ~platforms.indexOf(el.os.toLowerCase()));
      }
  
      if (list.length === 0) return;
  
      let versions = browser.version;
  
      if (versions === undefined) {
        list.forEach((el) => browsers.add(el));
      } else {
        if (!Array.isArray(versions)) versions = [versions];
        versions.forEach((version) => {
          filterByVersion(list, version).forEach((el) => browsers.add(el));
        });
      }
    });
  
    return Array.from(browsers);
  }
docs: Convert a list of platforms in "zuul" format to a list of platforms in
  the same format returned by Sauce Labs REST API.
  
  @param {Array} available The list of all supported platforms on Sauce Labs
  @param {Array} wanted The list of platforms in "zuul" format
  @return {Array} The transformed list
  @private