design pattern
steps:
clone repo: git clone https://github.com/jolaya182/observerPattnMbrry.git
install : npm i
run developer mode: npm start
go to your browser with the localhost url: http://localhost:8080/
or
run the prebuild command: npm run-script prebuild
open the index.html file in the dist folder: observerPattnMbrry/dist/index.html