jest: Test suite failed to run, SyntaxError: Unexpected token import

This is my jest configuration from the package.json file:

"jest": {
    "automock": false,
    "browser": true,
    "moduleNameMapper": {
      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "./app/tests/mocks/FileMock.js",
      "\\.(css|less)$": "identity-obj-proxy"
    },
    "moduleFileExtensions": [
      "js",
      "jsx"
    ],
    "moduleDirectories": [
      "node_modules"
    ],
    "transform": {
      "^.+\\.jsx?$": "./node_modules/babel-jest",
      "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "./app/tests/mocks/FileTransformer.js"
    },
    "testEnvironment": "jsdom",
    "testPathDirs": [
      "./app/tests"
    ],
    "testRegex": ".*.test.js",
    "verbose": true
  }

And the .babelrc file located in my root folder:

{
  "plugins": ["syntax-dynamic-import", "transform-runtime"],
  "presets": [
    [
      "es2015",
      {
        "modules": false
      }
    ],
    "react",
    "stage-0"
  ],
  "env": {
    "start": {
      "presets": [
        "react-hmre"
      ]
    }
  }
}

According to the documentation found at the jest getting started page this is everything I need for babel to work it's magic.

Regardless, this test:

import React from 'react';
import {shallow} from 'enzyme';
import Landing from '../components/Landing.component';

describe('<Landing/>', () => {
  it('should render a header to the page', () => {
    const landing = shallow(<Landing/>);
    expect(landing.find('h1').text()).toBe('This is the Landing component');
  });
});

returns:

FAIL  app/tests/Landing.component.test.js   
 ● Test suite failed to run

   /Users/shooshte/PersonalProjects/surviveJS/app/tests/Landing.component.test.js:1
   ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import React from 'react';
                                                                                            ^^^^^^
   SyntaxError: Unexpected token import

     at transformAndBuildScript (node_modules/jest-runtime/build/transform.js:320:12)

What am I doing wrong?

Jest sets the env variable to test, so I had to add my presets to the env setting in .babelrc:

{
  "plugins": ["syntax-dynamic-import", "transform-runtime"],
  "presets": [
    [
      "es2015",
      {
        "modules": false
      }
    ],
    "react",
    "stage-0"
  ],
  "env": {
    "start": {
      "presets": [
        "react-hmre"
      ]
    },
    "test": {
      "presets": ["es2015", "react", "stage-0"]
    }
  }
}

Each yearly preset only compiles what was ratified in that year. babel-preset-env replaces es2015, es2016, es2017, latest

Based on this, on latest configurations you must use/replace your Plugins/Preset of es2015 and any esX to the new one: env.

1. You must install babel-preset-env with npm install.
2. In your .babelrc you should update accordingly:

{
  "presets": [
    "env", 
    "stage-0", 
    "react-native"
  ],
  "plugins": ...
}

More information on Babel plugins official Documentation.

☝️ Remember the order of the plugins/preset in the array is important.

In my case, I had the following .babelrc config:

{
  "presets": [
    ["env", { "modules": false }],
    "react",
    "stage-2"
  ],
  "plugins": [
    "transform-runtime",
    "transform-class-properties",
    "react-hot-loader/babel"
  ]
}

Even though babel-env was specified I still got the error. To fix it I had to remove the "modules": false flag.

Jest doesn't handle imports so it needs a transform plugin, and this is why I had to add the plugin:

babel-plugin-dynamic-import-node

and update my babel settings to tell jest to use this plugin to transform the code properly:

"env": {
    "test": {
      "plugins" : ["dynamic-import-node"]
    }
  }

GitHub thread

You need to install babel-jest. I had the same problem.

Go to your app directory, yarn add babel-jest

Good luck!