import { transform } from '@babel/core';

test('object spread', () => {
  const { code } = transform(`const a = { ...b };`, {
    presets: [[require.resolve('./babel'), { targets: { chrome: 75 } }]],
  });
  expect(code).toEqual(
    `
"use strict";

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? Object(arguments[i]) : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

const a = _objectSpread({}, b);
  `.trim(),
  );
});