Does Jest support ES6 import/export?

Question

If I use import/export from ES6 then all my Jest tests fail with error:

Unexpected reserved word

I convert my object un

Answer 1

UPDATE 2020 - native support of ECMAScript modules (ESM)

---

According to this issue, there is native support of ESM from jest@25.4.0. So you won't have to use babel anymore. At the time of writing this answer (05/2020), to activate that you need to do three simple things:

• Make sure you don't transform away import statements by setting transform: {} in config file
• Run node@^12.16.0 || >=13.2.0 with --experimental-vm-modules flag
• Run your test with jest-environment-node or jest-environment-jsdom-sixteen.

So your Jest configuration file should contain at least this:

export default {
    testEnvironment: 'jest-environment-node',
    transform: {}
    ...
};

And to set --experimental-vm-modules flag, you will have to run Jest as follows:

node --experimental-vm-modules node_modules/jest/bin/jest.js

(I hope this will change in the future)