Setup gulp

.babelrc

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+{
+    "presets": [ "@babel/preset-env" ]
+}

gulpfile.babel.js

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+// General
+import gulp         from 'gulp';
+import del          from 'del';
+import rename       from 'gulp-rename';
+import sourcemaps   from 'gulp-sourcemaps'
+
+// CSS
+import sass         from 'gulp-sass';
+import autoprefixer from 'gulp-autoprefixer';
+
+// Paths
+const paths = {
+    src: './src/**/*',
+    dest: './dist/**/*',
+
+    styles: {
+      src: './src/scss/*.scss',
+      dest: './dist/'
+    }
+  };
+
+export const clean = () => del(paths.dest);
+
+export function styles() {
+    console.log('styles()');
+    return gulp.src(paths.styles.src)
+                .pipe(sourcemaps.init())
+                .pipe(autoprefixer())
+                .pipe(sass({
+                    outputStyle: 'compressed'
+                }))
+                .pipe(sourcemaps.write())
+                .pipe(rename('style.min.css'))
+                .pipe(gulp.dest(paths.styles.dest));
+}
+
+function watchFiles() {
+    gulp.watch(paths.styles.src, styles);
+}
+
+const build = gulp.series(clean, styles);
+
+export { watchFiles as watch };
+export default build;