Jest es6 modules: unexpected module import

Question

I\'m trying to test a file which needs to import an es6 module like this:

https://repl.it/HG9t/0

It seems I\'m missing some configurations to make it work pr

Answer 1

As node does not support modules you have to compile your files using Babel. Have a look at the docs on how to configure Jest and Babel

Answer 2

1. Install required dependencies:

yarn add --dev babel-jest @babel/core @babel/preset-env

or

npm install --save-dev babel-jest @babel/core @babel/preset-env

2. Create babel.config.js in your main folder and paste it there:

// babel.config.js
module.exports = {
  presets: [
    [
      '@babel/preset-env',
      {
        targets: {
          node: 'current',
        },
      },
    ],
  ],
};

3. Make sure all your jest settings in package.json and jest.config.js are set to default.