Install Node js from official site https://nodejs.org/en/download/
Install all required dependencies
npm install
To compile and run app on Linux
npm start
All next times
npm run run
If you have Windows
/node_modules/.bin/tsc
/node_modules/.bin/copyfiles -u 1 src/**/*.html src/**/*.css dist/
/node_modules/.bin/electron ./dist
All next times
/node_modules/.bin/electron ./dist