gulpfile.js

'use strict';
 
var gulp = require('gulp');
var sass = require('gulp-sass');
var cleanCSS = require('gulp-clean-css');
var sourcemaps = require('gulp-sourcemaps');
var rename = require('gulp-rename');
 
gulp.task('sass', function () {
  return gulp.src('./scss/**/*.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./css'));
});

gulp.task('sass:prod', function () {
  return gulp.src('./scss/**/*.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./css'))
    //.pipe(sourcemaps.init())
    .pipe(cleanCSS())
    //.pipe(sourcemaps.write())
    .pipe(rename('spooky.min.css'))
    .pipe(gulp.dest('./css'));
});
 
gulp.task('sass:watch', function () {
  gulp.watch('./scss/**/*.scss', ['sass']);
});

///////

gulp.task('default', ['sass']);

gulp.task('build', ['sass:prod']);

gulp.task('dev', ['sass:watch']);