Gulp with BrowserSync with ngrok

gulpfile.js

var gulp = require('gulp');
var browserSync = require('browser-sync').create();
var ngrok = require('ngrok');

gulp.task('default', function() {

  browserSync.init({
		server: {
			baseDir: "./public"
		}
	}, function(err, bs) {
		ngrok.connect(bs.options.get('port'), function(err, url) {
			console.log(' -------------------------------------');
			plugins.util.log('\r', '      NGROK:', plugins.util.colors.magenta(url));
			console.log(' -------------------------------------');
		});
	});
	
	// watch tasks go here
	
});

console.log and plugins.util.log not print enything.