npm i gulp gulp-cssnano gulp-autoprefixer gulp-sass browser-sync gulp-rename gulp-uglify gulp-babel @babel/core @babel/presets-env -D

• SASS compiling
• SASS injecting (in ./sass directory)
• HTML injecting (in core directory)
• Renaming
• Autoreload with Browsersync
• Autoprefixing CSS
• Minifying CSS with cssnano plugin
• Converting new JS syntax to old with Babel
• Minifying JS with Uglify

gulp

Your SASS files must be in ./sass directory, JS files in ./js directory and HTML file in core folder. Include CSS files via ./dist/(style).css and JS files via ./dist/(core).js

./dist/css

./dist/js