How to use the keystone.utils function in keystone

view.on('render', function(next) {
		
		locals.title = locals.topic.name;
		locals.metadescription = keystone.utils.cropString(keystone.utils.htmlToText(locals.topic.content.html), 200, '...', true);
		
		locals.topic.populate('watchedBy');
		
		for (var i = 0; i < locals.topic.watchedBy.length; i++) {
			if (req.user && req.user.id == locals.topic.watchedBy[i]) {
				locals.watchedByUser = true;
				break;
			}
		}
		
		
		// add this topic to the session's viewed topics array
		if (!_.contains(req.session.viewedTopics, locals.topic.id)) {
			req.session.viewedTopics.push(locals.topic.id);
		}

'cloudinary config': process.env.CLOUDINARY_URL || 'cloudinary://333779167276662:_8jbSi9FB3sWYrfimcl8VKh34rI@keystone-demo'

});

// Load your project's Models

keystone.import('models');

// Setup common locals for your templates. The following are required for the
// bundled templates and layouts. Any runtime locals (that should be set uniquely
// for each request) should be added to ./routes/middleware.js

keystone.set('locals', {
	_: require('lodash'),
	env: keystone.get('env'),
	utils: keystone.utils,
	editable: keystone.content.editable
});

// Load your project's Routes

keystone.set('routes', require('./routes'));

// Setup common locals for your emails. The following are required by Keystone's
// default email templates, you may remove them if you're using your own.

// Configure the navigation bar in Keystone's Admin UI

keystone.set('nav', {
	'posts': ['posts', 'post-categories'],
	'galleries': 'galleries',
	'enquiries': 'enquiries',

User.schema.methods.verifyEmail = function(req, res, next) {
	
	var user = this;
	
	user.emailVerificationKey = keystone.utils.randomString([16,24]);
	
	user.save(function(err) {
		
		if (err) return next(err);
				
		// send email
		new keystone.Email('verify-email').send({
			user: user,
			link: '/auth/verify/?email=' + user.email + '&key=' + user.emailVerificationKey,
			subject: 'Please confirm your email address',
			baseURL: req.protocol + '://' + req.get('host'),
			to: user.email,
			from: {
				name: 'KeystoneJS Forum',
				email: 'forum@keystonejs.com'
			}

'cookie secret': 'Y43`>-nb]).#N>)65(HY:TT])f?/:%=W~c"eTHY[`S.CarRf]9VaOw^$aMM[EtGz'

});

// Load your project's Models

keystone.import('models');

// Setup common locals for your templates. The following are required for the
// bundled templates and layouts. Any runtime locals (that should be set uniquely
// for each request) should be added to ./routes/middleware.js

keystone.set('locals', {
	_: require('underscore'),
	env: keystone.get('env'),
	utils: keystone.utils,
	editable: keystone.content.editable
});

// Load your project's Routes

keystone.set('routes', require('./routes'));

// Setup common locals for your emails. The following are required by Keystone's
// default email templates, you may remove them if you're using your own.

keystone.set('email locals', {
	logo_src: '/images/logo-email.gif',
	logo_width: 194,
	logo_height: 76,
	theme: {
		email_bg: '#f9f9f9',

'basedir': __dirname

});

keystone.import('models');

keystone.set('routes', require('./routes'));

keystone.set('locals', {
	_: require('lodash'),
	moment: require('moment'),
	js: 'javascript:;',
	env: keystone.get('env'),
	utils: keystone.utils,
	plural: keystone.utils.plural,
	editable: keystone.content.editable,
	google_api_key: keystone.get('google api key'),
	ga_property: keystone.get('ga property'),
	ga_domain: keystone.get('ga domain'),
	// host: (function() {
	// 	if (keystone.get('env') === 'staging') return 'http://sydjs-beta.herokuapp.com';
	// 	if (keystone.get('env') === 'production') return 'http://www.sydjs.com';
	// 	return (keystone.get('host') || 'http://localhost:') + (keystone.get('port') || '3000');
	// })()
});

keystone.set('nav', {
	'meetups': ['meetups', 'talks', 'rsvps'],
	'members': ['users', 'organisations'],
	'posts': ['posts', 'post-categories', 'post-comments'],
	'links': ['links', 'link-tags', 'link-comments']

'user model': 'User'

});

// Load your project's Models

keystone.import('models');

// Setup common locals for your templates. The following are required for the
// bundled templates and layouts. Any runtime locals (that should be set uniquely
// for each request) should be added to ./routes/middleware.js

keystone.set('locals', {
	_: require('underscore'),
	env: keystone.get('env'),
	utils: keystone.utils,
	editable: keystone.content.editable
});

// Load your project's Routes

keystone.set('routes', require('./routes'));

// Configure the navigation bar in Keystone's Admin UI

keystone.set('nav', {
	'posts': ['posts', 'post-categories'],
	'teams': 'teams',
	'users': 'users'
});

// Start Keystone to connect to your database and initialise the web server

'mongo' : config.mongo.uri,

  'auto update': false,
  'session': true,
  'auth': true,
  'user model': 'Admin',
  'cookie secret': srs(64),
});

keystone.import('models');

keystone.set('locals', {
  _: require('underscore'),
  env: keystone.get('env'),
  utils: keystone.utils,
  editable: keystone.content.editable,
});

keystone.set('routes', require('./routes'));
keystone.set('nav', {
  'apps': 'apps',
  'pages': ['Page', 'Media'],
  'votes': ['Vote', 'Ballot', 'Source', 'VerifiedBallot'],
});

keystone.start();

'chartbeat property': process.env.CHARTBEAT_PROPERTY,
	'chartbeat domain': process.env.CHARTBEAT_DOMAIN
	
});

keystone.import('models');

keystone.set('routes', require('./routes'));

keystone.set('locals', {
	_: require('underscore'),
	globals: require('./lib/globals'),
	js: 'javascript:;',
	env: keystone.get('env'),
	utils: keystone.utils,
	plural: keystone.utils.plural,
	
	config: require('./config'),
	
	google_api_key: keystone.get('google api key'),
	ga_property: keystone.get('ga property'),
	ga_domain: keystone.get('ga domain'),
	chartbeat_property: keystone.get('chartbeat property'),
	chartbeat_domain: keystone.get('chartbeat domain')
});

keystone.set('email locals', {
	keystoneURL: 'http://www.keystonejs.com/keystone',
	logo: '/images/logo_email.jpg',
	logo_width: 120,
	logo_height: 112,

'chartbeat property': process.env.CHARTBEAT_PROPERTY,
	'chartbeat domain': process.env.CHARTBEAT_DOMAIN
	
});

keystone.import('models');

keystone.set('routes', require('./routes'));

keystone.set('locals', {
	_: require('underscore'),
	globals: require('./lib/globals'),
	js: 'javascript:;',
	env: keystone.get('env'),
	utils: keystone.utils,
	plural: keystone.utils.plural,
	
	config: require('./config'),
	
	google_api_key: keystone.get('google api key'),
	ga_property: keystone.get('ga property'),
	ga_domain: keystone.get('ga domain'),
	chartbeat_property: keystone.get('chartbeat property'),
	chartbeat_domain: keystone.get('chartbeat domain')
});

keystone.set('email locals', {
	keystoneURL: 'http://www.keystonejs.com/keystone',
	logo: '/images/logo_email.jpg',
	logo_width: 120,
	logo_height: 112,
	theme: {

mongo: `${process.env.MONGO_URI}` || 'localhost:27017/vivid',
  port: 3000,
  'session store': 'mongo',
  updates: 'updates',
  'auto update': true,
  session: true,
  auth: true,
  'user model': 'User',
  'cookie secret': process.env.COOKIE_SECRET || 'development secret'
})
keystone.set('cloudinary config', process.env.CLOUDINARY_URL)
keystone.import('./models')

keystone.set('locals', {
  env: keystone.get('env'),
  utils: keystone.utils,
  editable: keystone.content.editable,
  _: require('lodash')
})

keystone.set('nav', {
  users: 'users'
})

const cl = cloudinary.Cloudinary.new()
cl.fromEnvironment();
(async () => {
  await next.prepare()
  const context = {
    keystone,
    cl,
    next,