Using jest with swc compiler @swc/jest causing that tests are failing with "Objects are not valid as a React child" with React 19

[kolorfilm]

I just updated react to version 19. My jest tests are failing with the message: console.error Error: Uncaught [Error: Objects are not valid as a React child (found: object with keys {$$typeof, type, key, props, _owner, _store}). If you meant to render a collection of children, use an array instead.]

I mentioned this also here: testing-library/react-testing-library#1371

Not sure where it comes from. React App is working, just all tests are failing with this message.

my jest.config.js:

module.exports = {
  testEnvironment: 'jsdom',
  modulePaths: ['<rootDir>/src'],
  transform: {
    '^.+\\.(ts|js|tsx|jsx)$': ['@swc/jest']
  },
  transformIgnorePatterns: ['<rootDir>/node_modules/'],
  resetMocks: true,
  testEnvironmentOptions: {
    url: 'https://www.example.com',
  },
};

and the .swcrc:

{
  "jsc": {
    "parser": {
      "syntax": "typescript",
      "tsx": true
    },
    "transform": {
      "react": {
        "runtime": "automatic"
      }
    }
  },
  "module": {
    "type": "commonjs"
  }
}

component + test:

export const LoadingSpinner = () => (
  <div></div>
);

describe('When LoadingSpinner is rendered', () => {
  it('Then it matches snapshot', () => {
    const { asFragment } = render(<LoadingSpinner />);

    expect(asFragment()).toMatchSnapshot();
  });
});

any ideas? Maybe it has something to do with the compiling? According to react team and their changelog they now force the new JSX transform: https://github.com/facebook/react/blob/main/CHANGELOG.md#react-1

[kolorfilm]

It is fixed. Don't know why but it seems that was dependency was updated that was related to that problem.