gruntfile.js

	module.exports = function  (grunt) {
	var config = {};

	//all tasks that must be loaded.
	var tasks = [
			'grunt-contrib-watch'
			,'grunt-contrib-concat'
			,'grunt-contrib-uglify'
			,'grunt-contrib-sass'
			,'grunt-contrib-htmlmin'
			,'grunt-contrib-imagemin'
			,'grunt-spritesmith'
			
	];
	
		//Concat ===============================
		var concat;
		config.concat = concat = {};

		concat.dev = {
			files: {
				"public/js/demo-site.development.js": [
					"bower_components/jquery/dist/jquery.min.js"
					,"bower_components/bootstrap/dist/js/bootstrap.min.js"
					,"lib/javascripts/tooltip.js"
				]
			}
		};


		//Uglify ===============================
		config.uglify = {dist: {
			options: {sourceMap:"public/myapp.dist.js.map", report:"gzip"}
			,files: {
				"public/js/demo-site.dist.js": ["public/js/demo-site.development.js"]
			}
		}}


		//Jasmine ===============================
	/*	var jasmine;
		config.jasmine = jasmine = {};

		jasmine.calc = {
			src:"calc/calc.js"
			, options:{
				specs: "spec/calc.spec.js"
			}
		};*/

	

		//Watch ===============================
		config.watch = {
			 scripts: {
			 	files: ["lib/**/*.js", "sass/**/*.scss"]
			 	,tasks: ["dev"]
			 	//,tasks: ["dev",'sass:dist']
			 }
		}


		//Sass ===============================
			var sass;
			config.sass = sass = {};

				//production
					sass.dist = {
						options: { style: "compressed"}
						, files: {
							"public/stylesheets/demo-site.production.css" : "sass/main.scss"
						}
					};

				//development env.
					sass.dev = {
					options: { style: "expanded", lineNumber: true}
					, files: {
						"public/stylesheets/demo-site.development.css" : "sass/main.scss"
					}
				};


		//Html Minifier ===============================
				var htmlmin;
				config.htmlmin = htmlmin = {};

					htmlmin.dist = {
						options: {
						  collapseWhitespace: true,
				          conservativeCollapse: true,
				          // minifyCSS: true,
				          // minifyJS: true,
				          removeAttributeQuotes: true,
				          removeComments: true
						},
						files: {                                   
					        'layout.min.html': 'jade/compiled-templates/layout.html'
					      }
					};	

		//Image min ===============================
				var imagemin;
				config.imagemin = imagemin = {};

					imagemin.dist = {
								  options: {
						          optimizationLevel: 5,
						          progressive: true,
						      },
						
					        files: [{
					            expand: true,
					            cwd: 'public/images/',
					            src: ['**/*.{png,jpg,gif}'],
					            dest: 'public/images/min'
					        }]
					 };	

		//Sprite ===============================
		var sprite;
		config.sprite = sprite = {};
		
		  // Configure grunt 
		  sprite.dist ={
		    sprite:{
		      all: {
		         src: 'public/images/*.png',
				dest: 'public/images/sprite/spritesheet.png',
				destCss: 'sass/sprites.css'
		      }
		    }
		  };		


		   //joycss ===============================
		var joycss;
		config.joycss = joycss = {};

		  joycss.dist = {
			  joycss: {
			    index: {
			      //紧凑拼图
			      options: { layout: 'close', force8bit: false },
			      cwd: 'public/images/min',
			      src: ['sass/index.less'],
			      dest: 'public/images/sprite'
			    },

			    detail: {
			      //水平布局
			      options: { layout: 'horizontal' },
			      cwd: 'public/images/min',
			      src: ['sass/index.less'],
			      dest: 'public/images/sprite'
			    }
			  }
			};
			//grunt.loadNpmTasks('grunt-joycss');
			
			
	//Register custom tasks ===============================
	grunt.registerTask('default',['dev']);
	grunt.registerTask('dev',['concat:dev','sass:dev']);
	grunt.registerTask('dist',['htmlmin','imagemin','sprite','concat:dev', 'uglify' , 'sass:dist']);

	//grunt watch just for sass
	//grunt.registerTask('dev',['sass:dev']);

	//grunt.registerTask('dev',['imagemin']);
	


	//General setup ===============================
	grunt.initConfig(config);
	tasks.forEach(grunt.loadNpmTasks);

};