Yarn is used on this project, so I suggest you use yarn.
You can install yarn as globally with: npm install --global yarn
After installing yarn run yarn install to install the dependencies.
Runs the app in the development mode. Open http://localhost:3000 to view it in the browser.
The page will reload if you make edits. You will also see any lint errors in the console.
Launches the test runner in the interactive watch mode.
Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.
The build is minified and the filenames include the hashes. Your app is ready to be deployed!
Runs the ESLint linter on the project and if possible fixes the lint errors according to your config in .eslintrc.json file.
Runs the Prettier formatter on the project and format all the files according to your config in .prettierrc.json file.