Jest setup “SyntaxError: Unexpected token export”

Question

I\'m implementing tests into an existing project that currently has no tests. My tests are failing to compile node_modules/ imports.

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Answer 1

For create-react-app users who are looking for a fix, here's what worked for me:

// package.json
...
  "jest": {
    "transformIgnorePatterns": [
      "/node_modules/(?!lodash-es)"
    ]
  },
...

Overriding options in jest.config.js file didn't work for me. Keep in mind that not every option can be overridden, here's a list of supported options: https://create-react-app.dev/docs/running-tests#configuration