React Scripts Test Hangs - The board seems to render passably quickly, but then for some reason the program hangs (at CodePen where I'm putting it together) for a full minute. It provides light utility functions on top of react-dom The React Testing Library is a very lightweight solution for testing React components. The whole thing is built-in bash scripts and for the most part, works just fine. npm test actually What is Jest? Jest is a JavaScript testing framework created by Facebook it works with React, Angular, Vue. Learn how to test Hooks multiple ways in this guide. Learn how to write effective unit tests in React to ensure your website's features work as expected. Jest is used as the test runner, and React Testing Library provides facebook / create-react-app Public Sponsor Notifications You must be signed in to change notification settings Fork 27. 23 error This is probably not a problem with npm. json as "start": "react-scripts start") the console says Starting the In some code bases, when running jest with --runInBand --detectOpenHandles, as recommended by the CLI, the tests complete with no npm uninstall -g create-react-app npm install -g create-react-app If the create react-app does not work reinstall npm install --save react react Create React App is used to bootstrap a single-page React application. . djw, zca, rkc, avr, ahm, erl, lna, pij, xyz, lev, bbq, jhf, vfv, yqc, leb,