Simple SFV example

example.js

class Router {\
	registerRoutes() {
		this.post('/user', UserController.create);
	}
}

class UserController {
	create(req, res) {
		this._userService.createFromRequest(req)
		.then(user => res.send(user.toJSON()));
	}
}

class UserService {

	/**
	 * Parses info off the request object in order to create a new user
	 *
	 * @param {object} req
	 * @param {string} req.email
	 * @param {striong} req.name
	 *
	 * @returns {UserVO}
	 */
	createFromRequest(req) {
		const createVO = this._userService_CreateVOFactory.createFromRequest(req);
		return this.create(createVO);
	}

	/**
	 * Core function that handles creating a new user
	 * 
	 * @param {UserService_CreateVO} createVO
	 * @returns {UserVO}
	 */
	async create(createVO) {
		const newUserId = await this._userService_Dao.create(createVO);
		return this.get(newUserId);
	}

	/**
	 * @param {int} id
	 * @returns {UserVO}
	 */
	async get(id) {
		return this._userService_Dao.get(id);
	}
}

class UserService_Dao {
	/**
	 * @param {UserService_CreateVO} createVO
	 * @returns {int}
	 */
	async create(createVO) {
		return await this.db.insert(createVO);
	}
}

class UserService_CreateVOFactory {
	createFromRequest(req) {
		return new UserService_CreateVO({
			email: req.email,
			name: req.name
		});
	}
}

class UserService_CreateVO {
	constructor(obj) {
		// assigns params from obj --> properties
	}

	get email()
	get name()
}

class UserVO {
	constructor(obj) {
		// assigns params from obj --> properties
	}

	get id()
	get email()
	get name()
	get dateCreated()
	get dateUpdated()
}

class UserVOFactory {
	createFromDbResults(dbResults) {
		return new UserVO({
			id: dbResults.id,
			email: dbResults.email,
			name: dbResults.name,
			dateCreated: dbResults.date_created,
			dateUpdated: dbResults.date_updated
		})
	}
}