npm i 
# or
npm install

npm run start:ng
# start ng-dev-server 
# url = http://localhost:4200

npm run start:electron
# start dev-electron-window
# link to http://localhost:4200 (ng-dev-server)

npm run build:ng-prod
# build ng static files.(production mode)

npm run generate-res
# generate electron app resources.(eg. app icons...)

npm run build:electron
# release electron app.
# default target: MacOS, Windows-64.
# output dir: out