Gruntfile.js

var fs = require('fs'),
    path = require('path');

function isEmptyDirectory (filepath) {
    var children, x;
    if (!fs.statSync(filepath).isDirectory()) {
        return false;
    }
    children = fs.readdirSync(filepath);
    for (x in children) {
        if (!isEmptyDirectory(path.join(filepath, children[x]))) {
            return false;
        }
    }
    return true;
}

module.exports = function (grunt) {
    // Build customizations would be left up to developer to implement.
    grunt.loadNpmTasks('grunt-dojo');
    grunt.loadNpmTasks('grunt-contrib-copy');
    grunt.loadNpmTasks('grunt-contrib-clean');
    grunt.loadNpmTasks('grunt-strip-code');
    grunt.initConfig({
        strip_code: { 
            options: {
                blocks: [{
                    start_block: '<!--debug-start-->',
                    end_block: '<!--debug-end-->'
                }, {
                    start_block: '/* debug-start */',
                    end_block: '/* debug-end */'
                }]
            },
            your_target: {
                src: 'dist/dojoConfig.js'
            }
        },
        clean: {
            build: {
                src: ['dist/']
            },
            uncompressed: {
                src: [
                    'dist/**/*.uncompressed.js'
                ]
            },
            afterbuild: {
                src: [

                    //lets delete everything!
                    'dist/**/*',

                    //...except a few things
                    '!dist/index.html',
                    '!dist/dojoConfig.js',

                    //dojo built layers and css files
                    //include other layers, or they'll be deleted
                    '!dist/dojo/dojo.js',
                    '!dist/app/css/build.css',


                    //the build output in case something goes wrong
                    '!dist/build-report.txt',

                    //any additional configs
                    //'!dist/**/app/config/**/*.js',

                    //images, resources, and source maps
                    '!dist/**/fonts/**',
                    '!dist/**/images/**',
                    '!dist/**/resources/**',
                    '!dist/**/*.js.map',

                    // i18n
                    '!dist/**/nls/*.js',
                    'dist/**/nls/*.consoleStripped.js',
                    'dist/**/nls/*.uncompressed.js',
                    '!dist/moment/locale/**',

                    // flags
                    '!dist/**/flags/**/**'
                ],
                filter: 'isFile'
            },
            emptydir: {
                src: ['dist/**/*'],
                filter: isEmptyDirectory
            }
        },
        copy: {
            main: {
                files: [{
                    expand: true,
                    cwd: 'src/',
                    src: ['index.html', 'dojoConfig.js'],
                    dest: './dist/'
                }]
            }
        },
        dojo: {
            travis: {
                options: {
                    profile: 'profiles/travis.profile.js'
                }
            },
            options: {
                releaseDir: '../dist',
                profile: 'profiles/build.profile.js',
                dojo: 'src/dojo/dojo.js',
                load: 'build',
                cwd: './',
                basePath: './src'
            }
        }
    });

    grunt.registerTask('build-dev', ['clean:build', 'dojo', 'copy']);
    grunt.registerTask('build-travis', ['clean:build', 'dojo:travis']);
    grunt.registerTask('build', ['clean:build', 'dojo', 'copy', 'clean:afterbuild', 'clean:emptydir', 'strip_code']);

};