text: import { generatorRuntime } from "babel-polyfill";
  
  function* range(start, end) {
    for (let i = start; i < end; i++) {
      yield i;
    }
  }
  
  function arrayRange(start, end) {
    let array = [];
    for (let i of range(start, end)) {
      array.push(i);
    }
    return array;
  }
  
  module.exports = {
    range: range,
    arrayRange: arrayRange,
  };
  