JEST - unexpected token import while running test - reactjs

Question

Im writing tests for an application but i run into the following error when importing certain classes in my tests:
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
/node_modules/react-redux/es/connect/connect.js:5
import connectAdvanced from '../components/connectAdvanced';
^^^^^^
SyntaxError: Unexpected token import
9 | children: PropTypes.string.isRequired,
10 | translator: PropTypes.func.isRequired
11 | };
| ^
I have not written any tests yet, i only imported the component in my test file:
import {TheComponent} from '../src/components/the-component';
My jest.config.json looks like this:
{
"moduleNameMapper": {
".+\\.(css|styl|less|sass|scss|png|jpg|ttf|woff|woff2)$": "identity-obj-proxy"
},
"setupFiles": [
"raf/polyfill",
"<rootDir>/test/testSetup.js"
]
}
My .babelrc file looks like this and is in the root directory:
{
"presets": [ "react", "es2015", "stage-2" ],
"plugins": [
"transform-class-properties",
"transform-object-rest-spread",
]
}
My package.json file looks like this:
{
"name": "testError",
"version": "1.0.0",
"scripts": {
"test:jest": "jest --config=jest.config.json --watchAll"
},
"files": [
"dist",
"src"
],
"devDependencies": {
"babel-cli": "^6.26.0",
"babel-core": "^6.26.3",
"babel-eslint": "^8.2.1",
"babel-loader": "^7.1.2",
"babel-plugin-transform-object-rest-spread": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"enzyme": "^3.6.0",
"enzyme-adapter-react-16": "^1.5.0",
"eslint": "^5.3.0",
"eslint-plugin-react": "^7.10.0",
"identity-obj-proxy": "^3.0.0",
"jest": "^23.5.0",
"mkdirp": "^0.5.1",
"prettier": "^1.13.7",
"prettier-eslint": "^8.8.2",
"prop-types": "^15.6.0",
"react-test-renderer": "^16.5.0",
"webpack": "^4.16.5",
"webpack-cli": "^3.1.0",
"webpack-dev-server": "^3.1.5",
"webpack-merge": "^4.1.4",
"yargs": "^12.0.1"
},
"dependencies": {
"axios": "^0.18.0",
"babel-polyfill": "^6.26.0",
"css-loader": "^1.0.0",
"eventing-bus": "^1.3.3",
"filesize": "^3.6.1",
"i18next": "^11.5",
"node-sass": "^4.8.3",
"react": "^16.4",
"react-circular-progressbar": "^1.0.0",
"react-dom": "^16.4",
"react-redux": "^5.0",
"react-truncate": "^2.4.0",
"redux": "^4.0",
"sass-loader": "^7.1.0",
"style-loader": "^0.22.1"
},
"main": "dist/main.js",
"module": "src/index.js"
}
I have tried to put several values in both the transformIgnorePatterns and transform properties in .babelrc but so for no luck.
Does anyone know how i can solve this issue? Any help will be appreciated.

Answer 1

As Mitch commented above,
I added the following to my jest.config file and it worked: "transformIgnorePatterns": [ "node_modules/(?!(react-redux|lodash-es)/)" ]