@marcius-capital/marcius-css/gulpfile.js

Flat design: a lightweight, responsive and modern CSS framework

const gulp = require('gulp');
const sass = require('gulp-sass');
var cleancss = require('gulp-clean-css');
var rename = require('gulp-rename');

gulp.task('build', () => {
    return gulp.src('src/**/*.scss')
        .pipe(sass({outputStyle: 'compact', precision: 10}).on('error', sass.logError))
        .pipe(cleancss())
        .pipe(rename({
            suffix: '.min'
        }))
        .pipe(gulp.dest('./build'));
});

gulp.task('watch', () => {
    gulp.watch('src/**/*.scss', (done) => {
        gulp.series(['build'])(done);
    });
});

gulp.task('default', gulp.series(['watch']));