ts-jest VS create-react-app

use ts-jest and set up Paths Re-Map

Jest's out of the box config for TS doesn't do any type checking. You can integrate https://kulshekhar.github.io/ts-jest/ or you can call ‘tsc’ yourself separately

ts-jest has had some strange performance issues and workarounds in the past, though I haven’t used it very recently so it might have fixed those by now.

Since we're working with TypeScript, we can use ts-jest, which conveniently brings Jest along for the ride:

I want to save you from manually copying the snippets one by one, so here is a Gist with the complete test file. This can be easily executed with Jest (or ts-jest for TypeScript).

See the Jest configuration docs to learn more about Jest configuration. ts-jest also has good documentation.

Using @swc/jest to compile code to CommonJS is much faster than babel-jest, ts-jest which have long cold starts when executing tests in a large project.

ts-jest: A transformer for handling TypeScript files.

Anyway, I ran into this exact error this morning setting up Jest for a TS script. I fixed it by just following the getting started instructions for Jest as well as ts-jest.

Immerse yourself in the official Create React App documentation for a deeper understanding.

Create React App (https://create-react-app.dev/)

- And ofc, there are some templates/frameworks that bring something of that together (https://create-react-app.dev/; maybe https://vitejs.dev/) - google for templates.

I recommend finding some friend with modern experience or at least some youtube tutorials or at least some learning course. That would help you to catch up on the best way to bootstrap your first project. Then you can practice.

What's the connection?

Also, take a look at this response from 2021: https://github.com/facebook/create-react-app/discussions/117...

Create React App Documentation

Inside the react-tutorial-app folder, to create a new React project runs the following command using create-react-appand for more details on how create-react-app works and other staff, please visit the official website: https://create-react-app.dev/

Before we embark on our journey, make sure you have React installed and a React project set up. If not, fear not! Create React App is your trusty sidekick for a quick start.

create-react-app -> Building a single-page application. Good for beginners.