babel Babel doesn’t do anything,It basically acts like const babel = code => code; by parsing the code and then generating the same code back out again. You will need to add some plugins for Babel to do anything like transpiling es6,JSX. babel-core if you want to use babel in your real project, you need … Read more
In case you are using a setupTests.js file you can import regenerator-runtime from there: // setupTests.js import ‘regenerator-runtime/runtime’ import Enzyme from ‘enzyme’ import EnzymeAdapter from ‘enzyme-adapter-react-16’ Enzyme.configure({ adapter: new EnzymeAdapter() }) Then you can import setupTests.js to every test file or better yet, in your package.json just add setupFilesAfterEnv to the jest config: // … Read more
This changed a bit in babel v6. From the docs: The polyfill will emulate a full ES6 environment. This polyfill is automatically loaded when using babel-node. Installation: $ npm install babel-polyfill Usage in Node / Browserify / Webpack: To include the polyfill you need to require it at the top of the entry point to … Read more