[WIP] FAIL browser: chromium app/components/Clickable/stories/Clickable.stories.js [TEST] ● Clickable › SampleClickable › smoke-test [TEST] [TEST] page.evaluate: StorybookTestRunnerError: [TEST] An error occurred in the following story. Ac...

[Copilot]

• Analyze the failing test issue: unmountComponentAtNode is not a function error
• Identify root cause: React 19 compatibility issue with Storybook 6.5.16 test runner
• Examine current story files structure and test runner configuration
• Add React 19 compatibility shim in Storybook preview.js to provide unmountComponentAtNode fallback
• Implement proper ReactDOM.render and unmountComponentAtNode polyfills for React 19
• Rebuild Storybook successfully with the compatibility fix
• Verify the compatibility shim is properly bundled and will resolve the unmountComponentAtNode error
• Confirm all three story files (Clickable, Header, T) are properly structured for testing
• Test suite should now pass without the React 19 compatibility errors

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