Repository: create-react-app
Issue: Error with react-scripts test (jest): importSource cannot be set when runtime is classic
Labels: stale,needs triage,issue: bug report

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### Describe the bug


I'm using Jest with typescript 4.x and React 17 (Create React App 4).
The babel-jest transformer always throws error `importSource cannot be set when runtime is classic`
Because I'm using emotion css in my jsx, so I have to append the @jsxImportSource in the .tsx file, like:
```
/** @jsxImportSource @emotion/core */
```

I've tried overwrite the babel config like
```
  presets: [
    [
      require.resolve("babel-preset-react-app"),
      {
        runtime: "automatic",
      },
    ],
    [
      require.resolve("@babel/preset-react"),
      {
        runtime: "automatic",
        importSource: "@emotion/core",
      },
    ],
  ],
  plugins: [
    [
      require.resolve("@babel/plugin-transform-react-jsx"),
      {
        runtime: "automatic",
      },
    ],
  ],
```
it still doesn't work.

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Yes

### Which terms did you search for in User Guide?

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https://github.com/facebook/jest/issues/11394


### Environment

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Environment Info:

  current version of create-react-app: 4.0.3
  running from C:\Users\yuex\AppData\Roaming\npm-cache\_npx\13392\node_modules\create-react-app

  System:
    OS: Windows 10 10.0.19043
    CPU: (8) x64 Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
  Binaries:
    Node: 14.16.1 - C:\Program Files\nodejs\node.EXE
    Yarn: Not Found
    npm: 6.14.12 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: Not Found
    Edge: Spartan (44.19041.964.0), Chromium (90.0.818.62)
    Internet Explorer: 11.0.19041.1
  npmPackages:
    react:  17.0.2
    react-dom:  17.0.2
    react-scripts: 4.0.3 => 4.0.3
  npmGlobalPackages:
    create-react-app: Not Found

### Steps to reproduce

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1. Set up a project by using Create React App 4, typescript 4.0 and @emotion/core
2. append `/** @jsxImportSource @emotion/core */` in the App.tsx file
Then run `npm run test`

### Expected behavior

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Expect no error here.

### Actual behavior

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display below errors:
`importSource cannot be set when runtime is classic`

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