Install the dependencies:

npm install

Copy the environment sample to a .env file

NULLSTACK_PROJECT_NAME="[dev] Pwa Pokedex"
NULLSTACK_PROJECT_DOMAIN="localhost"
NULLSTACK_PROJECT_COLOR="#D22365"
NULLSTACK_SERVER_PORT="3000"

Run the app in development mode:

npm start

Open http://localhost:3000 to view it in the browser.

Read the documentation