Please make sure to have Node.js version >= 8.9.4 (preferably LTS version).
Yarn will also be needed for packages.
To install required packages:
yarn install
To run the development mode servers:
yarn sd
This should start up tsc in watchmode to actively compile all TypeScript files in the ./src folder excluding the ./src/public subfolder (which is for the front-end code bundled by the Angular CLI).
To run only the live UI dev:
ng s
This should start a live web server for just the front-end code using Angular CLI. Visit the stated address to view the pages (typically localhost:4000).