index.js

const getPromise = function (resolveValue) {
  return Promise.resolve({ result: resolveValue });
};

const handleUsingThen = function () {
  return getPromise("doA").then((res) => res.result);
};

const handleAsync = async function () {
  const res = await getPromise("doB");
  return res.result;
};

transpiled.index.js

"use strict";

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

var getPromise = function getPromise(resolveValue) {
  return Promise.resolve({
    result: resolveValue
  });
};

var handleUsingThen = function handleUsingThen() {
  return getPromise("doA").then(function (res) {
    return res.result;
  });
};

var handleAsync = /*#__PURE__*/function () {
  var _ref = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
    var res;
    return regeneratorRuntime.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            _context.next = 2;
            return getPromise("doB");

          case 2:
            res = _context.sent;
            return _context.abrupt("return", res.result);

          case 4:
          case "end":
            return _context.stop();
        }
      }
    }, _callee);
  }));

  return function handleAsync() {
    return _ref.apply(this, arguments);
  };
}();