Gruntfile.js

(function () {

  'use strict';

  module.exports = function(grunt) {

    // Shorthand for loading all grunt tasks.
    require('load-grunt-tasks')(grunt);

    // See http://bit.ly/drupal-sass-breakpoints
    var eyeglass = require('eyeglass');

    grunt.initConfig({

      // Watch for changes to SCSS files to pre- and post- process CSS.
      watch: {
        sass: {
          files: ['scss/{,**/}*.scss', 'Gruntfile.js', '*.yml', '.scss-lint.yml'],
          tasks: [/*'scsslint:dist', */'sass:dist', 'autoprefixer:dist']
        },
        js: {
          files: ['js/{,**/}*.js', '!js/{,**/}*.min.js'],
          tasks: ['jshint']
        },
      },

      // We write our styles in SCSS and let grunt compile down to CSS.
      sass: {
        options: eyeglass({
          outputStyle: 'expanded'
        }),
        dist: {
          expand: true,
          flatten: true,
          src: 'scss/{,**/}*.scss',
          dest: 'css/',
          ext: '.css'
        },
      },

      // Lint SCSS files.
      scsslint: {
        options: {
          config: '.scss-lint.yml',
          colorizeOutput: true
        },
        dist: ['scss/{,**/}*.scss'],
      },

      // Autoprefixer post-processes the generated CSS files.
      autoprefixer: {
        options: {
          browsers: ['last 2 versions', 'ie >= 8', '> 1% in US']
        },
        dist: {
          expand: true,
          flatten: true,
          src: 'css/**/*.css',
          dest: 'css/'
        },
      },

      // Lint all javascript files.
      jshint: {
        options: {
          jshintrc: '.jshintrc'
        },
        dist: ['js/{,**/}*.js']
      },

      // Minify all SVG files in "images" folder.
      svgmin: {
        options: {
          plugins: [
            {
              removeViewBox: false
            }, {
              removeUselessStrokeAndFill: false
            }
          ]
        },
        dist: {
          expand: true,
          flatten: true,
          src: 'images/**/*.svg',
          dest: 'images/'
        },
      },

    });

    // Running `grunt` in the cli will automatically execute the following tasks:
    grunt.registerTask('default', ['sass:dist', 'autoprefixer:dist', 'watch']);
  };

}());