Gruntfile.js

module.exports = function(grunt) {

    // Project configuration.
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        watch: {
            js: {
                files: ['Gruntfile.js', 'src/*.js'],
                tasks: ['uglify'],
                spawn: true
            }
        },
        concat: {
            options: {
                // define a string to put between each file in the concatenated output
                separator: ';'
            },
            dist: {
                // the files to concatenate
                src: ['src/**/*.js'],
                // the location of the resulting JS file
                dest: 'build/monsterid.js'
            }
        },
        uglify: {
            options: {
                banner: '/*! <%= pkg.name %> <%= grunt.template.today("yyyy-mm-dd") %> */\n'
            },
            build: {
                src: 'src/*.js',
                dest: 'build/monsterid.min.js'
            }
        }
    });

    // Load the plugin that provides the "uglify" task.
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-regarde');

    grunt.renameTask('regarde', 'watch');

    // Default task(s).
    grunt.registerTask('default', ['concat', 'uglify']);
};