gulpfile.js

// Node modules
var fs = require('fs'),
    durandalBundler = require('./durandal-bundler'),
    gulp = require('gulp'),
    concat = require('gulp-concat'),
    minifyCSS = require('gulp-minify-css'),
    runSequence = require('run-sequence');

var outputFolder = './dev/dist',
    destinationFolder = '../v1/dist';

gulp.task('js', function () {
    return durandalBundler({
        baseDir: './dev/app',
        output: './dev/dist/main.js',
        paths: { 'requireLib': '../Scripts/require', }, // requirejs is mandatory, path is relative to baseDir
        include: ['requireLib'],    // requirejs is mandatory
        require: true,

        // If you want parts of the site to load on demand, remove them from the 'include' list
        // above, and group them into bundles here.
        // Ex: [ { 'bundle-name': [ 'some/module-1', 'another/module-2' ], } ]
        //      This will create a new file names "bundle-name", and include module-1 and module-2 inside.
        // Use folder/* to include all immediate children inside [folder]
        // Use folder/** to include all files and folders inside [folder]
        // Bundles will be created by the order in which they were defined
        bundles: [
            //===============================
            {
                name: 'client',
                modules: [
                    'client/*',
                    'dialog/client/*',
                ],
            },
            {
                name: "supplier",
                modules: [
                    'supplier/*',
                    'dialog/supplier/*',
                    'service/supplier/*',
                ],
            },
        ],

        // bundles that will be loaded manually, it's bundle map will be included in it's own built file
        dynamicBundles: ['client', 'supplier'],

        main: 'main.js',    // main js file contains requirejs config
        outMain: 'main-built.js',   // main built file name
        outBaseDir: 'dist', // app directory where built file will be stored
        minify: true,
        // almond: true,
    })
        .pipe(gulp.dest(outputFolder));
});

gulp.task('build', ['js', 'css', 'font'], function () { });

gulp.task('clean', function () {
    rmDir(outputFolder);
    rmDir(destinationFolder);
    console.log('Deleted old built');
});

gulp.task('default', function () {
    runSequence('clean', 'build', function () {
        gulp.src(outputFolder + "/**")
            .pipe(gulp.dest(destinationFolder));
        console.log('Copied new built to: ' + destinationFolder);
    })
});

function rmDir(dirPath, removeSelf) {
    try {
        if (fs.existsSync(dirPath)) {
            var files = fs.readdirSync(dirPath);
        } else {
            return;
        }
    }
    catch (ex) {
        throw ex;
    }

    if (files.length > 0) {
        for (var i = 0; i < files.length; i++) {
            var filePath = dirPath + '/' + files[i];

            if (fs.statSync(filePath).isFile()) {
                fs.unlinkSync(filePath);
            }
            else {
                rmDir(filePath, true);
            }
        }
    }

    if (removeSelf) {
        fs.rmdirSync(dirPath);
    }
};