Create a file within String using Gulp

gulpStringToFile.js

gulp.task('createFile', function() {
    var filename = 'app.js';
    var string = "(function() {\n    'use strict';\n    angular.module('App', ['ui-route']);\n})();";
    return stringToFile(filename, string)
        .pipe(gulp.dest('./js'));
});

function stringToFile(filename, string) {
    var src = require('stream').Readable({ objectMode: true });
    src._read = function () {
        this.push(new $.util.File({ cwd: __dirname, base: '', path: filename, contents: new Buffer(string) }));
        this.push(null);
    };
    return src
}

alright thanks man!