Gruntfile.js

module.exports = function(grunt) {
	var baseStyles = [
		"src/scss/foundation/bigfoot-variables.scss",
		"src/scss/foundation/bigfoot-mixins.scss",
		"src/scss/base/bigfoot-button.scss",
		"src/scss/base/bigfoot-popover.scss"
	];

	var variants = [
		"bottom",
		"number"
	];

	var concatSet = {
		options: {
			stripBanners: true,
			banner: "// <%= pkg.name %> - v<%= pkg.version %> - " +
					"<%= grunt.template.today(\"yyyy.mm.dd\") %>\n\n\n",
			separator: "\n\n\n// -----\n\n\n"
		},

		main: { src: baseStyles, dest: "dist/bigfoot-default.scss" }
  };

	var sassSet =       { "dist/bigfoot-default.css": "dist/bigfoot-default.scss" };
	var autoprefixSet = { "dist/bigfoot-default.css": "dist/bigfoot-default.css"  };

	variants.forEach(function(variant) {
		var css  = "dist/bigfoot-" + variant + ".css";
		var scss = css.replace(".css", ".scss");
		var src  = scss.replace("dist/", "src/scss/variants/");
		var conc = baseStyles.slice(0);
		conc.push(src)

		concatSet[variant] = { src: conc, dest: scss };
		sassSet[css] = scss;
		autoprefixSet[css] = css;
	});

	// 1. CONFIG
	grunt.initConfig({
		pkg: grunt.file.readJSON("package.json"),

		uglify: {
			build: {
				src: "dist/bigfoot.js",
				dest: "dist/bigfoot.min.js"
			}
		},

		concat: concatSet,

		coffee: {
			dist: {
				src: "src/coffee/bigfoot.coffee",
				dest: "dist/bigfoot.js"
			}
		},

		sass: {
			dist: {
				options: {
					style: "expanded",
					sourcemap: "none"
				},

				files: sassSet
			}
		},

		autoprefixer: {
			dist: {
				files: autoprefixSet
			}
		},

		watch: {
			options: { livereload: false },

			coffee: {
				files: ["src/coffee/bigfoot.coffee"],
				tasks: ["coffee", "uglify"],
				options: { spawn: false }
			},

			scss: {
				files: ["src/**/*.scss"],
				tasks: ["concat", "sass", "autoprefixer"],
				options: { spawn: false }
			}
		}
	});

	// 2. TASKS
	require("load-grunt-tasks")(grunt);

	// 3. PERFORM
	grunt.registerTask("default", ["coffee", "uglify", "concat", "sass", "autoprefixer"]);
  grunt.registerTask("styles", ["concat", "sass", "autoprefixer"]);
  grunt.registerTask("scripts", ["coffee", "uglify"]);

}