Gruntfile.js

/*jshint node:true*/
module.exports = function (grunt) {
    'use strict';

    grunt.initConfig({

        files: {
            http : '/',
            html: '../application/views',
            css : 'stylesheets',
            sass : 'sass',
            imgs : 'images',
            js : 'scripts',
            hbs: 'scripts/app/library/templates/',
            output: {
                html: '../application/views',
                css : 'stylesheets',
                imgs : 'images',
                js : 'scripts',
                hbs: 'scripts/app/library/templates/compiled'
            }
        },

        jshint: {
            options: {
                jshintrc: '.jshintrc'
            },
            src: ['<%= files.js %>/**/*.js', '!**/third_party/**']
        },

        groundskeeper: {
            ie: {
                expand: true,
                cwd: '<%= files.js %>',
                src: ['**/*.js', '!**/plugins/**'],
                dest: '<%= files.output.js %>',
                options: {
                    pragmas: ['development', 'debugging', 'validation']
                }
            },
            prod: {
                expand: true,
                cwd: '<%= files.js %>',
                src: ['**/*.js', '!**/plugins/**'],
                dest: '<%= files.output.js %>',
                options: {
                    pragmas: ['development', 'debugging', 'validation']
                }
            }
        },

        htmlmin: {
            prod: {
                expand: true,
                cwd: '<%= files.html %>',
                src: ['**/*.php'],
                dest: '<%= files.output.html %>',
                options: {
                    removeComments: true,
                    removeCDATASectionsFromCDATA: true,
                    collapseWhitespace: true,
                    removeRedundantAttributes: true,
                    removeEmptyAttributes: true
                }
            }
        },

        cssmin: {
            prod: {
                expand: true,
                cwd: '<%= files.output.css %>',
                src: ['**/*.css'],
                dest: '<%= files.output.css %>',
                options: {
                    banner: false,
                    keepSpecialComments: 0,
                    report: 'gzip',
                    removeRedundantAttributes: true,
                    removeEmptyAttributes: true
                }
            }
        },

        imagemin: {
            prod: {
                options: {
                    trials: 7,
                    progressive: true
                },
                expand: true,
                cwd: '<%= files.imgs %>',
                src: ['**/**/*.jpg', '**/**/*.png', '**/**/*.gif'],
                dest: '<%= files.output.imgs %>/'
            }
        },

        handlebars: {
            prod: {
                options: {
                    processContent: function (content) {
                        return content
                            .replace(/^[\x20\t]+/mg, '')
                            .replace(/[\x20\t]+$/mg, '')
                            .replace(/^[\r\n]+/, '')
                            .replace(/[\r\n]*$/, '\n');
                    },
                    processName: function (filePath) {
                        return filePath
                            .replace('scripts/app/library/templates/', '')
                            .replace('.handlebars', '');
                    },
                    namespace: 'Handlebars.templates'
                },
                expand: true,
                cwd: '<%= files.hbs %>',
                src: ['**/*.handlebars'],
                dest: '<%= files.output.hbs %>',
                ext: '.js'
            }
        },

        uglify: {
            hbs: {
                options: { report: 'gzip' },
                expand: true,
                cwd: '<%= files.output.hbs %>',
                src: ['**/*.js'],
                dest: '<%= files.output.hbs %>'
            },
            js: {
                options: {
                    compress: true,
                    mangle: true,
                    report: 'gzip',
                    preserveComments: 'false'
                },
                expand: true,
                cwd: '<%= files.js %>',
                src: ['**/*.js', '!**/**/fineuploader_min.js'],
                dest: '<%= files.output.js %>'
            }
        },

        compass: {

            dev: {
                'http_path' : '<%= files.http_path %>',
                'css_dir' : '<%= files.css %>',
                'sass_dir' : '<%= files.sass %>',
                'images_dir' : '<%= files.imgs %>',
                'javascripts_dir' : '<%= files.js %>',
                'environment': 'development'
            },

            prod: {
                'http_path' : '<%= files.http_path %>',
                'css_dir' : '<%= files.output.css %>',
                'sass_dir' : '<%= files.sass %>',
                'images_dir' : '<%= files.imgs %>',
                'javascripts_dir' : '<%= files.js %>',
                'enviroment': 'production',
                'outputStyle': 'compressed'
            }
        },

        watch: {
            sass: {
                files: '<%= files.sass %>/**/*.scss',
                tasks: ['compass:dev']
            },
            jshint: {
                files: '<%= files.js %>/**/*.js',
                tasks: ['jshint']
            },
            dev: {
                files: ['<%= files.sass %>/**/*.scss', '<%= files.js %>/**/*.js'],
                tasks: ['compass:dev', 'jshint']
            }
        },

        clean: {
            css:  ['<%= files.output.css %>'],
            hbs:  ['<%= files.output.hbs %>'],
            imgs: ['<%= files.output.imgs %>'] // dev purposes only
        },

        compress: {
            build: {
                options: {
                    archive: 'resources.tar.gz',
                    mode: 'tgz'
                },
                files: [{
                    src: ['./**/*'],
                    dest: '.'
                }]
            }
        }


    });

    // Load tasks
    Object
        .keys(require('./package.json').devDependencies)
        .forEach(function (key) {
            return (/^grunt-/).test(key) && grunt.loadNpmTasks(key);
        });

    grunt.registerTask('css',   ['clean:css', 'compass:prod', 'cssmin:prod']);
    grunt.registerTask('hbs',   ['clean:hbs', 'handlebars:prod', 'uglify:hbs']);
    grunt.registerTask('js',    ['groundskeeper:prod', 'uglify:js']);
    grunt.registerTask('img',   [ 'imagemin:prod']);

    grunt.registerTask('build',     ['css', 'hbs', 'js', 'img', 'compress']);
    grunt.registerTask('default',   ['watch:sass']);
};