Slow testing in CRA typescript

[malte1989]

1 )
npx create-react-app my-app --template typescript

2 )
npm test

3 )
Why does it take 15 seconds for a really small testing?
Is there any way to speed up the tests without ejecting?

4 ) Things I tried

• tsconfig: "exclude": ["/tests/", "/?test.", "/?spec."]
• react-scripts test --env=node
  --> minimum 9 seconds

---

WITH TYPESCRIPT

PASS src/App.test.tsx (7.59 s)
√ renders learn react link (3 ms)

Test Suites: 1 passed, 1 total
Tests: 1 passed, 1 total
Snapshots: 0 total
Time: 15.534 s
Ran all test suites.

WITHOUT TYPESCRIPT

PASS src/App.test.js (5.659 s)
√ renders learn react link (35 ms)

Test Suites: 1 passed, 1 total
Tests: 1 passed, 1 total
Snapshots: 0 total
Time: 11.611 s
Ran all test suites.