• npm i

• Copy src/*.html to dist folder.
• Copy src/assets/*/ to dist/assets/*/ folder.
• Compile SASS src/styles/app.scss to dist/styles folder.
• Bundle and transpile JS src/scripts/app.js to dist/scripts folder.
• Create sources maps.
• Run a dev web server with browsersync.
• Run linter on SCSS and JS files.
• Optimize assets on production mode (build).

• npm start : build on files changes, launch a dev server with browsersync.
• npm run build : clean, lint and build the project.
• npm run clean : clean the dist folder.
• npm run lint : run a linter on scss and js files.

Use "JavaScript Standard Style" : https://standardjs.com/rules.html

Only customization: require a semicolon at the end of each line.

Use "stylelint-config-standard" : https://github.com/stylelint/stylelint-config-standard