Exchange console

Development mode :

In the project directory, you must run:

    # npm i  
  or
    # yarn

for install modules. after install you can run:

    # npm start
  or
    # yarn start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

Build mode :

In the project directory, you must run:

   # npm run build
 or
   # yarn run build

Builds the app for production to the build folder.

The build folder is ready to be deployed.

note: You may serve it with a static server:
# yarn global add serve || # npm i serve --global
after install run:
# serve -s build

Done!