text: export function getCountries() {
      return ['China', 'Germany', 'Greece', 'Italy', 'Japan', 'Portugal', 'Russia', 'Spain', 'UK', 'US'];
  }
  //
  export function getData() {
      // create some random data
      let countries = getCountries(), data = [];
      //
      for (let i = 0; i < countries.length; i++) {
          data.push({
              country: countries[i],
              active: i % 5 != 0,
              sales: Math.random() * 100000,
              expenses: Math.random() * 50000
          });
      }
      //
      return data;
  }
  