Basic congif. grunt.js file

Gruntfile.js

module.exports = function(grunt) {
    'use strict';

    var imagePath = "../htdocs/images";
    var jsPath = "../htdocs/js";
    var uglifyOptions = {
                beautify: false,
                report: "min",
                mangle: {
                    except: ['jQuery']
                },
                compress: {
                    global_defs: {
                      "DEBUG": false
                    }/*,
                    dead_code: true*/
                }
            }

    var gruntConfig = {
        pkg: grunt.file.readJSON('package.json'),

        uglify: {
            globals: {
              options: uglifyOptions,
              files: {
                '../htdocs/js/globals.js': [
                    "../htdocs/source/js/libs/jquery-1.8.3.min.js",
                    "../htdocs/source/js/libs/config.js",
                    "../htdocs/source/js/libs/plugins.js",
                    "../htdocs/source/js/libs/utils.js",
                    "../htdocs/source/js/libs/cookie.utils.js",
                    "../htdocs/source/js/libs/cartFlutuante.js",
                    "../htdocs/source/js/libs/acec.js",
                    "../htdocs/source/js/libs/global.js",
                    "../htdocs/source/js/libs/social-scripts.js",
                    "../htdocs/source/js/events-common.js"

                ]
              }
            },

            products: {
                options: uglifyOptions,
                files: {
                        '../htdocs/js/products.js': [
                        "../htdocs/source/js/products/events-comments.js",
                        "../htdocs/source/js/products/products.js",
                        "../htdocs/source/js/products/productUtils.js",
                        "../htdocs/source/js/products/product_palette.js"
                    ]
                }
            },

            address: {
                options: uglifyOptions,
                files: {
                        '../htdocs/js/address.js': [
                        "../htdocs/source/js/libs/jquery-ui-1.10.3.js",
                        "../htdocs/source/js/libs/jquery-ui-i18n.js",
                        "../htdocs/source/js/scheduledDeliveryClient.js",
                        "../htdocs/source/js/enderecos.js"
                    ]
                }
            },

            dynamic_mappings: {
                options: uglifyOptions,
                files:  [
                        {
                            expand: true,     // Enable dynamic expansion.
                            cwd: '../htdocs/source/js/',      // Src matches are relative to this path.
                            src: ['*.js', '!globals.js', '!products.js'], // Actual pattern(s) to match.
                            dest: '../htdocs/js',   // Destination path prefix.
                            ext: '.js'   // Dest filepaths will have this extension.
                        }
                    ]
            }
        },


        //O Objetivo do concat neste caso é somente mover o arquivo para manter o padrao
        /*concat: {
            options: {
              separator: ';'
            },
            globals: {
                src:
                    [
                        "../htdocs/source/js/libs/jquery-1.8.3.min.js",
                        "../htdocs/source/js/libs/plugins.js",
                        "../htdocs/source/js/libs/utils.js",
                        "../htdocs/source/js/libs/cookie.utils.js",
                        "../htdocs/source/js/libs/cartFlutuante.js",
                        "../htdocs/source/js/libs/acec.js",
                        "../htdocs/source/js/libs/global.js",
                        "../htdocs/source/js/libs/social-scripts.js"
                    ],
                dest: '../htdocs/js/globals.js'
            },
            products: {
                src:
                    [
                        "../htdocs/source/js/products/events-comments.js",
                        "../htdocs/source/js/products/products.js",
                        "../htdocs/source/js/products/product_palette.js",
                        "../htdocs/source/js/products/productUtils.js"
                    ],
                dest: '../htdocs/js/products.js'
            }
        },*/

        imagemin: {
            options: {
                optimizationLevel: 3
            },
            dynamic: {
                files: [{
                    expand: true,
                    cwd: '../htdocs/source/images',
                    src: ['**/*.{png,jpg,gif}'],
                    dest: imagePath
                }]
            }
        }
    };

    grunt.initConfig(gruntConfig);

    grunt.event.on('watch', function(action, filepath, target) {
        grunt.log.writeln(target + ': ' + filepath + ' foi ' + action);
    });

    var keys = Object.keys(gruntConfig);
    var tasks = [];

    for(var i = 1, l = keys.length; i < l; i++) {
        tasks.push(keys[i]);
    }

    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-uglify');

    //Optimizador de imagem
    grunt.loadNpmTasks('grunt-contrib-imagemin');

    grunt.registerTask('default', tasks);
};