gulpfile.js

'use strict';

var gulp = require('gulp'),
    cleanCSS = require('gulp-clean-css'),
    sass = require('gulp-sass'),
    rename = require('gulp-rename'),
    sourcemaps = require('gulp-sourcemaps'),
    runSequence = require('run-sequence'),
    config = {
      sass: {
        source: 'scss/ASGrid.scss',
        target: 'dist/'
      },
      minify: {
        source: ['dist/*.css', '!dist/*.min.css'],
        target: 'dist/'
      }
    };

gulp.task('sass', function () {
  return gulp.src(config.sass.source, {read: true})
      .pipe(sass().on('error', sass.logError))
      .pipe(gulp.dest(config.sass.target));
});

gulp.task('minify', function () {
  return gulp.src(config.minify.source)
      .pipe(sourcemaps.init())
      .pipe(cleanCSS({compatibility: 'ie8'}))
      .pipe(rename({suffix: '.min'}))
      .pipe(sourcemaps.write('.'))
      .pipe(gulp.dest(config.minify.target));
});

gulp.task('make', function (cb) {
  runSequence(
    'sass',
    'minify',
    cb
  );
});