In order to install front-end app, you need to run command below in client directory:
npm install
For developer work, run command below. It will build app with watcher of changes in code. Then go to localhost:5000/#/
npm run start
For one-time build run command below.
npm run build
For dev and prod environment use code below. Variables like URL base, can be set in index_*.ejs here.
export NODE_ENV=dev
npm run build
export NODE_ENV=prod
npm run build
Note: on Windows instead of export NODE_ENV use set NODE_ENV.