Newly created react app with typescript template crashing when running tests with coverage flag enabled

Describe the bug

Running on a greenfield project created with create-react-app and typescript template the tests with the coverage flag doesn’t work. Running the test without coverage flag works fine.

Environment

Environment Info:

  current version of create-react-app: 3.4.1
  running from /Users/pperezdiez/.config/yarn/global/node_modules/create-react-app

  System:
    OS: macOS 10.15.5
    CPU: (8) x64 Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
  Binaries:
    Node: 12.16.3 - ~/.nvm/versions/node/v12.16.3/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.14.4 - ~/.nvm/versions/node/v12.16.3/bin/npm
  Browsers:
    Chrome: 85.0.4183.83
    Firefox: 79.0
    Safari: 13.1.1
  npmPackages:
    react: ^16.13.1 => 16.13.1 
    react-dom: ^16.13.1 => 16.13.1 
    react-scripts: 3.4.3 => 3.4.3 
  npmGlobalPackages:
    create-react-app: Not Found

Steps to reproduce

1. yarn create react-app my-first-app --template typescript
2. Add to package.json a script to run tests with coverage: "test:coverage": "react-scripts test -- --coverage --runInBand --watchAll=false",
3. Run the coverage: yarn test:coverage

Same can be done without yarn. I am adding yarn as it is how I created it so it is consistent with the info above.

Expected behavior

The tests are run properly when the coverage flag is enabled

Actual behavior

It crashes like if it wasn’t aware that it has to transpile typescript to run the tests.

[PabloFNK]

This is stale as there is no official answer but this is still happening.

[PabloFNK]

I have detected that with react-scripts 4 this issue is solved, so if someone is still facing this I suggest to update. At least creating a project from scratch no longer fails when running tests with coverage flag.