Hi, I have ejected version of cra and had some issues with configuration for jest.

After about 3 hours trying to chain compilation of babel and typescript I just found typescript-babel-jest. Zero configuration drop-in replacement.

I just changed "^.+\\.tsx?$": "<rootDir>/config/jest/typescriptTransform.js", with "^.+\\.tsx?$": "typescript-babel-jest", in my package.json and it simply works, reads tsconfig.json and .babelrc and other settings!

So I have suggestion for including this package, this guys use it too https://github.com/ant-design/ant-design/blob/master/.jest.js#L33