Current Gulp build process

app.scripts.json

{
  "prebuild": [
    
    "angular",
    "angular-animate",
    "angular-ui-router",
    "angular-bootstrap",
    "angular-bootstrap-tpls",
    "angular-utf8-base64",
    "ng-fastclick"
  ],
  
  "paths": {

    "angular"                : "bower_components/angular/angular.js",
    "angular-animate"        : "bower_components/angular-animate/angular-animate.js",
    "angular-ui-router"      : "bower_components/angular-ui-router/release/angular-ui-router.js",
    "angular-bootstrap"      : "bower_components/angular-bootstrap/ui-bootstrap.js",
    "angular-bootstrap-tpls" : "bower_components/angular-bootstrap/ui-bootstrap-tpls.js",
    "angular-utf8-base64"    : "bower_components/angular-utf8-base64/angular-utf8-base64.js",
    "ng-fastclick"           : "bower_components/ng-fastclick/dist/index.js"
  }
}   

dev dep.

"devDependencies": {
    "angular-utf8-base64": "^0.0.2",
    "event-stream": "~3.3.1",
    "gulp": "^3.9.0",
    "gulp-angular-templatecache": "^1.7.0",
    "gulp-concat": "^2.6.0",
    "gulp-connect": "^2.2.0",
    "gulp-ng-annotate": "^1.0.0",
    "gulp-uglify": "^1.2.0"
  }

gulpfile.js

var es            = require('event-stream');
var gulp          = require('gulp');
var concat        = require('gulp-concat');
var connect       = require('gulp-connect');
var templateCache = require('gulp-angular-templatecache');
var ngAnnotate    = require('gulp-ng-annotate');
var uglify        = require('gulp-uglify');


var scripts = require('./app.scripts.json');

var source = {
    js: {
        main: 'app/main.js',
        src: [
            // main module
            'app/app.js',

            // module files
            'app/**/module.js',

            // other js files [controllers, services, etc.]
            'app/**/!(module)*.js',
        ],
        tpl: 'app/**/*.tpl.html'
    }
};

var destinations = {
    js: 'build'
};


gulp.task('build', function(){
    return es.merge(gulp.src(source.js.src) , getTemplateStream())
        .pipe(ngAnnotate())
        // .pipe(uglify())
        .pipe(concat('app.js'))
        .pipe(gulp.dest(destinations.js));
});

gulp.task('vendor', function(){
    var paths = [];
    scripts.prebuild.forEach(function(script){
        paths.push(scripts.paths[script]);
    });
    gulp.src(paths)
        .pipe(concat('vendor.js'))
        //.on('error', swallowError)
        //.pipe(uglify())
        .pipe(gulp.dest(destinations.js))
});

gulp.task('watch', function(){
    gulp.watch(source.js.src, ['build']);
    gulp.watch(source.js.tpl, ['build']);
});

gulp.task('connect', function() {
    connect.server({
        port: 8080
    });
});

//gulp.task('default', ['vendor', 'build', 'watch', 'connect']);
gulp.task('default', ['vendor', 'build', 'watch']);

var swallowError = function(error){
    console.log(error.toString());
    this.emit('end')
};

var getTemplateStream = function () {
    return gulp.src(source.js.tpl)
        .pipe(templateCache({
            root: 'app/',
            module: 'app'
        }))
};