materio-base-d7/sites/all/themes/gui/materiobasetheme/gulpfile.js

'use strict';

var gulp = require('gulp');
var sass = require('gulp-sass');
var watch = require('gulp-watch');
var autoprefixer = require('gulp-autoprefixer');
var jsmin = require('gulp-jsmin');
var rename = require('gulp-rename');

function handleError(err) {
  console.log(err.toString());
  // this.emit('end');
}

gulp.task('scripts', function () {
    gulp.src('./js/script.js')
        .pipe(jsmin())
        .pipe(rename({suffix: '.min'}))
        .pipe(gulp.dest('./js/'));
});

gulp.task('styles', function () {
  gulp.src('./scss/styles.scss')
    .pipe(sass().on('error', sass.logError))
    // .pipe(gulp.dest('./css/'));

  // gulp.src('./css/*.css')
    .pipe(autoprefixer({
        browsers: ['last 2 versions'],
        cascade: false
    })).on('error', handleError)
    .pipe(gulp.dest('./css/'));
});

gulp.task('default', function () {
});

// default gulp task
gulp.task('default', ['scripts', 'styles'], function() {
  gulp.watch('./scss/*.scss', ['styles']);
  gulp.watch('./js/script.js', ['scripts']);
});