gruntfile

// See: http://24ways.org/2013/grunt-is-not-weird-and-hard/
module.exports = function(grunt) {

	grunt.initConfig({
		pkg: grunt.file.readJSON('package.json'),

		clean: {
			build: {
				src: ['build/*']
			}
		},

		copy: {
			main: {
				files: [
					{
						expand: true,
						cwd: 'fonts/',
						src: ['**'],
						dest: 'build/fonts',
						filter: 'isFile'
					},
					{
						expand: true,
						cwd: 'sass/vendor/',
						src: ['**'],
						dest: 'build/css/vendor/',
						filter: 'isFile'
					},
					{
						expand: true,
						cwd: 'js/vendor/',
						src: ['**'],
						dest: 'build/js/vendor/',
						filter: 'isFile'
					},
				],
			},
		},

		csscomb: {
			options: {
				config: 'sass/csscomb.json'
			},
			build: {
				expand: true,
				cwd: 'sass/',
				src: ['**/*.scss', '!_mixins.scss', '!_variables.scss'],
				dest: 'sass/'
			}
		},

		sass: {
			options: {
				compass: true,
				style: 'expanded',
				precision: 3,
				require: [ 'sass-globbing', 'susy' ],
				loadPath: [
					'node_modules/node-normalize-scss/',
					'bower_components/fontawesome/scss/',
					'bower_components/breakpoint-sass/stylesheets/'
				]
			},
			build: {
				files: {
					'build/css/style.css': 'sass/style.scss',
					'build/css/editor-style.css': 'sass/editor-style.scss',
				}
			}
		},

		jshint: {
			options: {
				globals: {
					jQuery: true
				}
			},
			build: {
				files: {
					src: ['js/**/*.js', '!js/vendor/**/*.js']
				}
			}
		},

		concat: {
			build: {
				src: [
					'js/biotext.js'
				],
				dest: 'build/js/scripts.js',
				nonull: true
			}
		},

		uglify: {
			options: {
				preserveComments: 'some',
			},
			build: {
				files: {
					'build/js/scripts.min.js': 'build/js/scripts.js',
					'build/js/admin.min.js': 'build/js/admin.js'
				}
			}
		},

		postcss: {
			options: {
			map: true, // inline sourcemaps

			processors: [
					require('autoprefixer')({browsers: 'last 2 versions'}), // add vendor prefixes
				]
			},
			dist: {
				src: 'build/css/*.css'
			}
		},

		csso: {
			options: {
				report: 'min'
			},
			build: {
				files: [{
					expand: true,
					cwd: 'build/css/',
					src: ['**/*.css', '!.min.css'],
					dest: 'build/css/',
					ext: '.min.css'
					// 'build/css/style.min.css': ['build/css/style.css'],
					// 'build/css/editor-style.min.css': ['build/css/editor-style.css']
				}]
			}
		},

		imagemin: {
			options: {
				cache: false // Bug: https://github.com/gruntjs/grunt-contrib-imagemin/issues/140
			},
			build: {
				files: [{
					expand: true,
					cwd: 'images/',
					src: ['**/*.{png,jpg,gif,svg}'],
					dest: 'build/images/'
				}]
			}
		},

		watch: {

			options: {
				livereload: true
			},

			js: {
				files: ['js/**/*.js'],
				tasks: ['concat'],
				options: {
					spawn: false,
					livereload: true,
				}
			},

			css: {
				files: ['sass/**/*.scss'],
				tasks: ['sass', 'postcss' ],
				options: {
					livereload: true,
					spawn: false
				}
			},

			images: {
				files: ['images/**/*'],
				tasks: ['newer:imagemin'],
				options: {
					spawn: false
				}
			},
		},

	    criticalcss: {
	        frontpage: {
	            options: {
	                url: "http://local.biotext.com.au",
	                width: 1200,
	                height: 900,
	                outputfile: "./build/css/critical/frontpage.css",
	                filename: "./build/css/style.css", // Using path.resolve( path.join( ... ) ) is a good idea here 
	                buffer: 800*1024,
	                ignoreConsole: true
	            }
	        }
	    },

	});

	grunt.loadNpmTasks('grunt-postcss');
	grunt.loadNpmTasks('grunt-contrib-clean');
	grunt.loadNpmTasks('grunt-contrib-copy');
	grunt.loadNpmTasks('grunt-contrib-concat');
	grunt.loadNpmTasks('grunt-contrib-imagemin');
	grunt.loadNpmTasks('grunt-contrib-jshint');
	grunt.loadNpmTasks('grunt-contrib-sass');
	grunt.loadNpmTasks('grunt-contrib-uglify');
	grunt.loadNpmTasks('grunt-contrib-watch');
	grunt.loadNpmTasks('grunt-csscomb');
	grunt.loadNpmTasks('grunt-csso');
	grunt.loadNpmTasks('grunt-newer');
	// grunt.loadNpmTasks('grunt-notify');
	// grunt.loadNpmTasks('grunt-criticalcss');

	// grunt.registerTask('default', ['clean', 'copy', 'sass', 'postcss', 'concat', 'imagemin', 'watch']);
	grunt.registerTask('default', ['clean', 'copy', 'sass', 'postcss', 'concat', 'imagemin', 'csso', 'watch']);
	grunt.registerTask('build', ['clean', 'copy', 'csscomb', 'sass', 'postcss', 'jshint', 'concat', 'uglify', 'imagemin', 'csso']);

};