I'm a Senior Javascript Fullstack developer with over 8 years of experience delivering highly reliable solutions to my clients. I have an outgoing personality and excellent analytical skills, which allows me to do an outstanding job gathering requirements and developing technical specifications. I am a dedicated Team player and deploy Agile methods when working on projects. As a Node.js Tech Lead, I share my passion and knowledge with other programmers. 

Tomasz Romik

\[TOC\]

Every year, the world of **software development changes**, making it difficult for some businesses to survive in this digital era. As a result, to remain competitive, businesses must keep up with web development trends. A strong web or mobile product is required to retain your position in this competitive digital market.

Failure to stay up with current trends can have significant ramifications for your product's performance and user experience. You risk falling behind your competition and losing users to websites that provide superior user experiences. The best method to stay competitive in your business sector is to develop or update your application on current trends. If you’re currently looking for ways to improve your software product, **read on to find out how**.

## Why are development trends essential to know?

Today's online economy is highly competitive. Whether you have a large corporate website or a blog for your brand, your site must keep up with appearance and functionality to remain competitive. Some of these elements may be more crucial than others, depending on what your company does. We'll go over the top reasons for updating your website frequently.

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## Top trends in web development in 2022

Identifying the most effective web development trends that can work for your organization may be critical. We've developed a list of web development trends based on industry demands in numerous IT industries to save you time and work.

### 1. Progressive web apps

The Progressive Web App (**PWA**) technology is at the top of our web development trends list. It's a website-like app that works as a real mobile app. It is self-contained and communicates with clients like a native app.

The following are some of the advantages that PWA technology has provided to organizations and users:

* Installation is simple
* Increasing device storage and power efficiency
* Reduced support and development costs
* Effortless updating and upkeep
* More flexible distribution More rapid market entry

### 2. Single-page applications

![Img](https://a.storyblok.com/f/86602/720x383/aeab693671/single-page-applications.jpg)

**SPA** is a well-known and commonly used web development technology. Unlike ordinary website apps, they have a single page that loads the entire website before loading dynamic content on the same page. HTML5 and AJAX are used to make SPAs responsive.

Furthermore, front-end JavaScript frameworks such as **Vue, Ember and React** deal with client-side SPA development.

Among the advantages of SPAs are:

* Online assistance is not available.
* Convenient debugging
* Simple navigation
* Reduced bounce rate and faster page load

### 3. Dark mode

The dark mode trend has exploded in popularity worldwide, and we expect it to skyrocket in the coming years. According to an [Android Authority survey](https://www.androidauthority.com/dark-mode-poll-results-1090716/), **81.9%** of respondents approved a dark mode on their devices, and 9.9% switched between light and dark mode. Due to its visual design pattern, a dark-themed website makes it easier for users to enjoy web browsing regardless of device.

According to another Polar survey, 95% of users prefer dark mode to light mode. Tech behemoths such as Google, Facebook, Reddit, and Twitter are already utilizing dark mode UI, and many more will follow suit.

<ReadMore> Read also: </ReadMore>

### 4. Accelerated Mobile Pages (AMP)

AMP technology operates like PWA. It is yet another development in the web development industry. The goal of **AMP** is to speed up page functionality while also retaining users. Compared to full-scope web products, AMPs are optimized pages with a convenient and simplified design and basic features. These pages are also mobile-responsive and have readable content.

Accelerated Mobile Pages (AMP) are a new web design trend that demonstrates how the internet is becoming more user-friendly. Although 5G internet technology is now available and many businesses prefer to create native apps to improve user experience, the AMP plugin allows businesses to save money on UX while also reaching their target audiences. As a result, we anticipate seeing speciality and smaller items competing with industry giants.

### 5. Voice Search

**Voice search** is a growing trend that should not overlook. We believe it will have a more significant impact on the internet in the following years. According to [Statista](https://www.statista.com/statistics/1022823/worldwide-smart-speaker-market-revenue/), by 2025, the global smart speaker market will be worth more than 35.5 billion dollars. According to another report, the voice recognition market will reach $27.16 billion by 2026. Voice search optimization has emerged as one of the top web development trends, based on multiple studies and current market situations. It would help if you implemented it into your technical SEO plan to keep ahead of the competition.

### 6. AI-Powered Chatbots

![Img](https://a.storyblok.com/f/86602/720x383/5fadbcd382/ai-powered-chatbots.jpg)

**AI-powered chatbots** help organizations speed up operations with text or voice chats, improving the client experience. They can gather information, troubleshoot issues, respond quickly to inquiries, and provide a seamless digital experience. We anticipate that AI-enabled chatbots will become even more versatile in meeting the requirements of matching user behaviours in 2022 and beyond by utilizing natural language processing, machine learning, and data retrieval methods.

As a result, many competent B2C organizations serve their clients with these chatbots within Skype, WhatsApp, and Facebook rather than standard chatbots. In 2022 and beyond, probably even more organizations will accept AI-enabled chatbots. Chatbots are most beneficial to the finance, education, travel, and healthcare industries.

### 7. Serverless Architecture

Being one of the fastest-growing domains, the Web has seen a massive surge in the adoption of serverless architecture. Because of the introduction of work-from-home shifts, cloud **[SaaS solutions](https://selleo.com/saas-development-company)** have increased this year.

According to Flexera's State of the Cloud Report, 99% of businesses use one or more private or public clouds. It demonstrates that cloud architecture will be a significant web development trend in the future.

### 8. Internet of Things (IoT)

One of the most significant technological advancements that will shape the future of web development is the Internet of Things (**IoT**). This technology has entered our lives due to the rising use of the internet. Thanks to the Internet of Things technologies, many devices are now accessible via our mobile devices. IoT-connected devices transmit data in real-time. The technology enables businesses to contact customers as rapidly as possible, resulting in a more personalized experience. One of the most popular IoT gadgets is the Google Nest Smart Speakers.

You might be asking how it relates to web development. The trend includes various devices such as signalling devices, cameras, and sensors. On the other hand, IoT will enable advanced communication between functional models and website layouts. It will ensure that client issues are resolved more efficiently and quickly.

### 9. Mobile-First Development

The rapid growth of mobile users explains why the mobile-first approach will significantly shape the future of web development. Many web developers have used this method for many years. According to Statista, mobile devices will account for more than 57% of global webpage views in August 2021. Because mobile devices receive the most traffic, adopting a mobile-first web development strategy has become critical.

Being **mobile-friendly**, on the other hand, varies. It entails enabling one-click ordering on eCommerce applications, utilizing geolocation data to provide users with a personalized experience, and incorporating biometric authentication such as voice recognition or fingerprint scanning, among other things.

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### 10. Blockchain Technology

**Cryptocurrencies** were first introduced in 2004, and we may expect a lot from this web development technology in 2022 and beyond. At the end of November 2021, about 80 million blockchain wallet users were worldwide. In addition to software and hardware support, trade infrastructure, and legal regulation, blockchain technology requires.

As a result, these features will be covered by evolving web technologies in the future years. Technical errors and hacking must be avoided when using blockchain functionality. Some large banks seek to develop algorithms to protect sensitive user data and secure crypto trading.

Peer-to-peer networking will also become more prevalent. If this technology becomes more available and reliable for people, it will change how people engage with government agencies, pay taxes, and network professionally.

### 11. Responsive design

![Img](https://a.storyblok.com/f/86602/720x383/88c1c1fb3f/responsive-design.jpg)

**Responsive web design** is unquestionably one of the elements required for digital transformation. Mobile devices are now ubiquitous, as is their users' desire to browse web pages that look good on all screen sizes, platforms, and environments. Mobile-friendly websites are now required, with all screen resolutions supported and all content, including images and font size, smoothly and adequately adjusted. It allows them to be ranked higher by average users, including current and prospective customers.

Responsive web design is not a novel concept in 2022 but rather a helpful feature that most people take for granted. So, if you haven't yet joined the responsive web design revolution, keep reading to learn more.

### 12. API-first development

The advent of the **Application Programming Interface**, or API, is possibly the most significant technological change in the last decade. API is central to a slew of other significant breakthroughs. SaaS, cloud computing, container orchestration, distributed apps, serverless computing, and machine learning are examples.APIs allow for the continuous modularization of technology. The notion that a structured digital service's programmatic interface is the lowest common denominator in a tech stack has become entrenched in software engineering. Most developers would never consider creating libraries and services that serve multiple purposes.

Given how pervasive and fundamental APIs have become, we anticipate that API-first firms will become the dominant players in their respective industries. Some businesses are API-first because APIs are their primary offering. Companies may spend up to $23.6 million on API and related infrastructure in 2022.

### 13. Motion UI

One of the reasons **Motion UI** has become so popular is this. Motion UI is a front-end framework that enables developers to build responsive web pages and mobile apps with predefined motions in a native app scenario. This framework can create an element slide, spin, bounce, transition, and do various things.

Because it is compatible with all web technologies and can be applied anywhere on a website, such as in the header, footer, and menus, Motion UI has been widely utilized since 2018. However, SASS libraries' technology has made it accessible, making it one of the most popular web development trends in 2022.

![Img](https://a.storyblok.com/f/86602/720x374/033dcf86de/top-technologies-in-2022.jpg)

## Top technologies in 2022

Along with these web development trends, leading technologies are crucial for your organization in this digital era. Every online service we use now exists because of programming languages. Because they are numerous, you may wonder: which programming languages are the most valuable to your company or brand in 2022?

### React.js

The MERN stack is still in its infancy. Angular is frequently replaced in the described stack by [React](https://selleo.com/react-development-company), a JavaScript library. React is a library rather than a framework; its core functionality is limited, forcing developers to rely on third-party services. Still, the rising popularity of React has aided its rapid growth.React.js outperforms Angular due to its virtual DOM, which allows for faster and easier change implementation.

It's also worth noting that React uses JSX, a JavaScript modification that allows for seamless component work. As a result, knowing JSX is preferable if you want to make the most of the MERN stack, especially React.

### Node.js

Node.js is an essential component of all of the above-described web development stacks. It is an application runtime environment that is used to build server-side apps. Working with [Node.js](https://selleo.com/node-js-development-company) requires knowledge of JavaScript. For this reason, it is often used in stacks together with JS front-end frameworks.

### Flutter

We previously discussed the multi-experience trend for 2022 and its potential. You may be wondering how to create an app that looks great on any device's screen. So here comes the hero: The Flutter development toolkit enables the creation of an excellent user interface for any screen.

<ReadMore> Read also: </ReadMore>

Google announced the availability of Flutter for the Web in the autumn of 2019. We've been waiting for this since 2017 when it first announced a promising technology. Flutter for the Web is an excellent solution in many situations. Flutter assists in transforming an existing mobile web into a solution that can run on various devices.

We are excited for Google to release Fuchsia, a new operating system. Its user interface and apps are currently written in Flutter. So, if you launch your Flutter app, you will have the opportunity to be one of the first on the Fuchsia OS horizon.

## Summary

In 2022 and beyond, the **web development trends** outlined above will alter how organizations engage with their customers. These development trends may be challenging, but they also present opportunities to deliver a flawless end-product and provide consumers with an optimized, personalized, and seamless experience.

In general, any web trend for 2022 is worth your time. Some will last for the next decade, while others will become the norm in months. So please don't be hesitant to put them into practice as soon as possible.

To ensure your software stays up to date with the latest trends, consider choosing a software development company that always works with the latest technologies and solutions like Selleo. Don’t hesitate to [contact us](https://selleo.com/contact) so we can discuss your product and help you upgrade it.

Failure to stay up with current trends can have significant ramifications for your product's performance and user experience. The best method to stay competitive in your business sector is to develop or update your application on current trends. 

Web Development Trends To Look For In 2022

The year 2022 has just started, and everyone is predicting trends in their respective fields. After the COVID-19 pandemic, the E-commerce industry has blossomed like never before. More and more businesses are shifting their business models to virtual markets. In this rapidly growing software development, choosing the right framework has become one of the most important and complicated tasks.

Developers all over the world are also assuming many predictions for trends in Node.js for 2022. In this article, we will explain the expected trend in Node.js for 2022.

Let’s start the article by learning more about Node.js and its popularity.

## What is Node.js?

Node.js is a JavaScript runtime built on Chrome’s V8 JS engine. It uses an event-driven, asynchronous, non-blocking input/output model (meaning how it interacts with the system’s disk and network, e.g., reading/writing data, making HTTP requests, etc.). It operates on a single thread event loop.

Node.js was created in 2009 by Ryan Dahl. He argued that software should be able to multi-task and said that the right way to handle several concurrent connections was to have a single-thread, an event loop, and non-blocking I/Os. This all made Node very efficient and eliminated the wait for requests.

More details about [Node.js and why to choose it](/blog/why-choose-node-js) is linked in the article.

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## Why is Node.js so popular?

The popularity of Node.js has grown significantly in recent years because of its extremely lightweight and high flexibility. Node.js comes with an extensive library of JavaScript

modules that simplify the development process. Due to its open-source nature, Node.js has become incredibly popular for both web and mobile application development.

Recent statistics show that:

* As of early 2020, more than 50% of the developers use Node.js in their projects.
* In the USA, more than 28000 websites are built on Node.js technology.
* Big names like eBay, AliExpress, and others are relying on Node.js.
* Node.JS is used by websites that get heavy traffic, such as Netflix, PayPal, and Groupon.
* Since 2009 when Node.js was introduced into the developer world, its popularity has wildly grown. In Github, Node.js has 75.9k stars, 19k forks, and 3k watchers. In Stack share, it has 71.8k followers and 8.3k votes. These numbers alone can show how popular Node.js is. Popular tech giants like Microsoft and Netflix use Node.js.
* Node.js won the top spot in the StackOverflow’s 2020 developer survey. Over half of the respondents in the survey reported having used it in their projects.

## Top Node.js Frameworks

There are 6 top Node.js frameworks popular for their lightweight and simplified development process. Let’s get to know each one of them in small details.

### Express.js

Express.js is one of the top web application frameworks of Node.js. It is highly lightweight and flexible that comes with robust features for the website and mobile app development. The Express.js framework provides a layer of fundamental web application features without obscuring Node.js features. There are numerous popular frameworks based on Express.js.

![Img](https://a.storyblok.com/f/86602/720x405/6f3f4cea60/node-trends2.jpg)

### Meteor.js

Meteor.js is an open-source platform that is used by millions of developers to develop web and mobile apps. It is well-known among developers for making javascript applications simple, efficient, and scalable. It took over a decade of hard work by the industry giants to make it to its perfection. Meteor is a mature open-source framework that allows you to build and scale efficiently so you can serve millions of users.

### Koa.js

Koa.js middleware stack flows in a stack-like manner, allowing a developer to perform actions downstream then filter and manipulate the response upstream. Koa is a new web framework designed by the team behind Express, aiming to be a smaller, more expressive, and more robust foundation for web applications and APIs. By leveraging async functions, Koa allows developers to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware within its core, and it provides an elegant suite of methods that make writing servers fast and enjoyable.

### Sails.js

Sails.js  - one of the most famous MVC frameworks for Node.js. It is designed to match the familiar MVC pattern of frameworks like Ruby on Rails, but with support for modern apps' requirements. It provides features like data-driven APIs with a scalable and service-oriented architecture.

### Hapi.js

Hapi.js is an open-source framework for web and desktop applications. It is most commonly used to build web services such as JSON API, websites, and HTTP proxy applications. The mobile team created the framework at Walmart Labs. Mr. Eran Hammer, who created OAuth, was the brain behind this technology. He designed it to handle their traffic for Black Friday events, one of the busiest days for online shopping in the U.S. calendar. The original versions of Hapi used the Express framework.

### NestJS

NestJS is an open-source, extensible, versatile, progressive Node.js framework for creating compelling and demanding backend systems. It is currently the fastest-growing Node.js framework in TypeScript. NestJS is used for writing scalable, testable and loosely coupled applications. It brings scalable Node.js servers to a whole new level.

Check out more reasons why you should choose Nest.js as your desired Framework in this detailed [article.](/blog/why-choose-nest-js-as-your-backend-framework)

Moving on to the main topic of the article and checking out the top trends in Node.js to watch in 2022.

## Leading Trends in Node.js to Watch in 2022

Here’re some of the most predicted trends in Node.js that will help businesses leverage their potential and get an edge over their competitors in 2022.

### Trend # 1: GraphQL Deployment in Node.js apps

GraphQL is a query language. By using GraphQL, a client can request for the data they need from the server, and the server will send a JSON response to the query. The interesting thing to note here is that the client can ask for exactly what they need, and they receive only what is required.

![Img](https://a.storyblok.com/f/86602/720x348/67ad47822d/node-trends-1.jpg)

#### The Popularity of GraphQL in 2020

* An emerging Node.js trend - GraphQL has grown immensely in popularity over the last two years. Due to its ability to streamline the workflow on multiple platforms, it has become the choice of millions of developers worldwide.
* The GraphQL Foundation, a newly established organization hosted by the Linux Foundation, governs developments around GraphQL. GraphQL servers are available for multiple popular languages, e.g., Java, JavaScript, Ruby, Python, Perl, C#, Go, etc.
* The popularity of GraphQL grew rapidly. E.g., The State of JavaScript 2018 report mentions that only 5% of developers surveyed had used it in 2016. However, 20.4% of developers used it in 2018.

#### GraphQL is the best Alternative for REST API And Why should it be used?

GraphQL offers several advantages over REST, which are as follows:

* Apps using REST APIs call endpoints. The entire data in that endpoint will be returned in the JSON format. This results in over-fetching as well as under-fetching, which can cause scalability and performance issues. GraphQL, with its queries, schemas, and resolvers, enables developers to design API calls that meet their specific data requirements. This way, GraphQL resolves the over-fetching and under-fetching challenges.
* Due to designing the endpoints according to the view in the application using REST API, it can create a bottleneck when the application needs quick iterations on the frontend. Such iterations might require more data in the frontend, or they might require fewer data. GraphQL doesn’t create such a bottleneck due to its flexibility. The iterations for developing the frontend can continue without having to change the backend.
* Applications built on REST API get all the data in the Endpoint. The application owner can’t gain insights into specific data elements since the entire data is returned every time. Whereas, in GraphQL, a developer can use the specific queries to retrieve specific data elements. This enables the application owner to gain insights into which data elements are in demand. Moreover, they will know which data elements aren’t being used by clients anymore.

### Trend # 2: MEAN & MERN Stack

MEAN (MongoDB, Express, Angular, Node.JS) and MERN (MongoDB, Express, React, Node.JS) are the two stacks that constitute amazingly powerful technologies in the field of app development. These technologies are rapidly growing open-source web and app development frameworks that enable a developer to develop complex applications and frontend web apps.

These technologies are used by some of the biggest tech companies, like Netflix, which boost its popularity. Netflix's entire website relies on the MERN stack framework for the smooth web development experience.

### Trend # 3: Real-Time Apps

In the year 2021, people demanded real-time apps for different online activities. These real-time apps are the most common cause of Node.js. With amazing user-engagement, real-time apps not only provide a set of incredible features but speed as well. These apps include features like live chats, social media integration, ad servers, gamification, stock exchange features, etc. Node.js fits all the requirements in this ecosystem.

![Img](https://a.storyblok.com/f/86602/720x348/9c304b787f/real-time-assets.jpg)

Node.js apps can serve thousands of servers for data-intensive and real-time IoT device apps as well. However, there is one drawback of these real-time apps as they can overload a server. Node.js makes the collaboration environment update seamlessly due to Event API and Web Sockets. Trello is one of the biggest examples of a web-app where a real-time collaboration pattern is implemented.

The other kind of real-time apps which can be build using Node.js frameworks are:

* Video conference apps
* Document sharing apps
* Voice over Internet Protocol
* Online gaming
* E-commerce transactions like stockbroking
* Instant messaging apps

Because of the fast performance and open-source flexibility, Node.js has been a popular choice among the top-notch web and app developers worldwide.

### Trend # 4: Serverless Architecture

Node.js is most famous for its serverless architecture. It means that to create an application, a developer does not have to worry about maintaining the servers.

A serverless architecture reduces the dependency on hardware and servers, which leads to less cost of development. It also offers numerous advantages, and the biggest advantages are overall-low project cost, high code quality, low module cost, and better flexibility.

### Trend # 5: Internet of Things (IoT)

![Img](https://a.storyblok.com/f/86602/720x348/b602bbe766/nodejs4.jpg)

Node.js is an excellent source to build apps for IoT. Most famous IoT companies have already started hiring experts to create IoT apps using Node.js to implement better microservices, real-time capabilities, and data-centric approaches. The main advantage of using Node.JS is to translate to faster real-time execution. It acquires less memory and requires fewer resources on the server-end. Therefore, developers can create scalable and efficient applications for IoT with Node.JS.

## Summary

Node.js is among the very few web and app development technologies that has seen steady growth ever since launched. The use of node.js in building robust real-time apps will surely be a dominant trend in the upcoming years.

It is incredibly useful in simplifying database workflows and offers great solutions for leveraging real-time data.

If you wish to talk to an Expert Node.js Development Team, you can always [contact](https://selleo.com/contact) us at Selleo. We have the best Node.js experts who can answer all your questions. Looking forward to hearing from you

Developers all over the world are also assuming many predictions for trends in Node.js for 2021. In this article, we will explain the expected trend in Node.js for 2022.


Top trends in Node.js to Watch in 2022

NestJS is a framework for building efficient and scalable Node.js server-side applications built with and fully supporting TypeScript. It uses robust HTTP Server frameworks like Express or Fastify. Nest provides a level of abstraction above the common Node.js frameworks and exposes their APIs to the developer. This gives a great amount of freedom to use third-party modules.

A good reason to choose NestJS over ExpressJS (one of the most popular Node.js frameworks) is the fact that when a new project in Node.js is started it is a clear architecture based on a few simple components (controllers, modules and providers). This gives great **ease to split applications into microservices**.

Are you wondering **why choose NestJS** as your backend framework? Keep reading.

## What is NestJS?

As mentioned, NestJS is an **open-source, extensible, versatile, progressive Node.js framework** for creating compelling and demanding backend systems. It is currently the fastest-growing Node.js framework in TypeScript.

NestJS is used for writing **scalable, testable and loosely coupled applications**. It brings scalable Node.js servers to a whole new level. It supports databases like PostgreSQL, MongoDB, MySQL. **NestJS is heavily influenced by Angular, React and Vue** and offers dependency injection right out of the box.

As of January 2020, it has over **23k GitHub stars** and its weekly npm download rate is almost **180k**. It encourages developers to try, learn and use some well-known software development paradigms and its documentation has lots of examples, recipes and code sources.

NestJS is easily extendible, as it can be used with other libraries; versatile thanks to its adaptive fully-fledged ecosystem and progressive, bringing JavaScript features and design patterns.

## Building blocks of NestJS

**Modules**: used to organize the code and split features into logical reusable units. Grouped TypeScript files are decorated with “@Module” decorator which provides metadata that Nest makes use of to organize the application structure.

**Providers**: also called services, which are designed to abstract any form of complexity and logic. Providers can be created and injected into controllers or other providers.

**Controllers**: responsible for handling incoming requests and returning appropriate responses to the client-side of the application (for example call to the API).

## Incredible features of NestJS

Recently, the NestJS framework has been gaining extreme popularity due to its incredible features. Some of them are:

* It leverages TypeScript - strongly typed language which is a superset of JavaScript
* Easy to use, learn and master
* Powerful Command Line Interface (CLI) to boost productivity and ease of development
* Detailed and well-maintained documentation
* Active codebase development and maintenance
* It is open-source (MIT license)
* Support for dozens of nest-specific modules that help you easily integrate with common technologies and concepts like TypeORM, Mongoose, GraphQL, Logging, Validation, Caching, WebSockets and much more
* Easy unit-testing applications
* Created for Monoliths and Micro-services (an entire section in the documentation regarding Microservice types of NestJS applications as well as techniques and recipes

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## Why choose NestJS

Java as a programming language is more than 20 years old. For many years, it was the main framework for creating business applications, but recently, the focus shifted towards Node.js. Because of its speed, [Node.js took the developer world by storm](https://selleo.com/blog/why-choose-node-js) allowing to enjoy all the benefits of JavaScript and writing both frontend and backend in the same programming language. Since NestJS is the fastest-growing framework for Node.js, let’s talk about the reasons **why choose NestJS over your current framework**?

* A quick and efficient development process.
* Highly scalable and easy to maintain applications.
* Fastest growing Node.js framework for the past 3 years.
* Large community and support system.
* Nest has positioned itself at a unique crossroad of front end and mid-tier development that many languages have struggled to find.
* The use of TypeScript helps ensure that Nest will remain relevant in the rapidly changing JavaScript landscape and gives developers less context switching.
* Great documentation.
* Easy unit testing.
* Built for large scale enterprise applications.
* Nest provides an out of the box application architecture that allows developers and teams to create highly testable, scalable, loosely coupled and easily maintainable applications.
* With NestJS you can build Rest API’s, MVC applications, microservices, GraphQL applications, Web Sockets or CLI’s and CRON jobs.
* It uses the best of Node.js, TypeScript, and bullet-proof architectural patterns.
* The structure of the application in Nest is heavily based on Angular. The structure is very simple and allows more attention to be paid to the design of endpoints and their consumers, instead of the application structure.
* NestJS forces developers to use a specific architecture by introducing Angular-like modules, services, and controllers, ensuring the application is scalable, highly testable, and loosely coupled contrary to other Node.js frameworks like Express or Koa where a mistake early on in the project regarding the architecture may cost a lot in terms of time spent refactoring the codebase later.

## Who is using NestJS?

The benefits of using **NestJS are widely recognized by some of the biggest companies** that are looking to do more in less time. The most popular ones are:

### [Roche](https://www.roche.com/)

This multinational healthcare company that operates under two divisions pharmaceuticals and diagnostics and controls the American biotechnology company Genetech is using NestJS on their main website.

### [Adidas](https://www.adidas.pl/)

A designer and manufacturer of shoes, clothing and accessories is the largest sportswear manufacturer in Europe and the second largest in the world. This is probably why they decided to use a highly scalable framework to build large scale efficient applications.

### [Capgemini](https://www.capgemini.com/)

This French multinational corporation providing consulting, technology, professional, and outsourcing services is also using NestJS for their application architecture.

### [Decathlon](https://www.decathlon.com/)

Sporting goods retailer with over 1,500 stores in 57 countries chose NestJS as the backend for their web application.

When discussing the companies who are using NestJS it is also worth mentioning sample open-source projects like:

* Commerce platform for an on-demand economy and digital marketplaces https://github.com/ever-co/ever
* Hub for EVE online community https://github.com/new-eden-social/new-eden-social
* Business management platform https://github.com/ever-co/gauzy

## Summary

**NestJS gives developers a great head start.** All you need to start the development is to set up a new app and you are ready to go. This framework gives you a huge boost right at the very beginning while helping you take further steps by defining proper app architecture.

NestJS uses modern solutions and technologies, so the applications created with it are **maintainable and long-lasting**. It can be connected with GraphQL, WebSockets or used for building microservices.

All that makes NestJS an excellent framework, so if you are thinking about **upgrading or building a new product** this is the way to go. And if you are in need of an experienced team that can get you through the shift or build a NestJS app from scratch, [contact Selleo.](https://selleo.com/contact)

NestJS is a framework for building efficient and scalable NodeJS server-side applications built with and fully supporting TypeScript.

Why Choose NestJS As Your Backend Framework?

ORM or Object Relation Mapping is a process of mapping between relational database systems and objects. It is a translator between the relational representation of your data and objects in the code.

If you are currently working with TypeORM and want to start using Sequelize, this article is for you.

## What is typeORM

TypeORM is an advanced object-relations-management module that can be run in NodeJS, React Native, Cordova, Browser and can be used with JavaScript (ES5, ES6, ES7, ES8) and TypeScript.

It was made to support the latest JavaScript features while providing some additional ones to help you develop any kind of application with databases.

TypeORM supports Data Mapper and Active Record patterns - unlike other JavaScript ORMs. Thanks to it you can write high quality, scalable and maintainable applications in the most productive way. TypeORM is influenced by other ORMs like Hibernate, Entity Framework and Doctrine.

### TypeORM features:

* written in TypeScript - this means it has great out of the box support for typings, which includes decorators
* [support for Repository and ActiveRecord patterns](https://typeorm.io/#/active-record-data-mapper)
* [support for Entities referencing database views](https://typeorm.io/#/tree-entities) - this is super helpful when creating applications that make use of categories - this makes it much easier for developers to build such a feature. Also, there are several solutions for tree handling so you can pick best option for your case
* [Generating migrations based on changes in code](https://typeorm.io/#/migrations/generating-migrations)
* Database relations management - although very poor when it comes to conditionally fetching relations. Even slightly complex queries require using query builder and joining tables “by hand”
* Query builder allowing sub-queries - this allows performing more complex queries

## What is Sequelize

Sequelize is an ORM for NodeJS providing access to MySQL, MariaDB, PostgreSQL or SQLite databases. It uses JavaScript syntax and is easy to write and read.

Sequelize is a quite young ORM with all the necessary features and is constantly developed. It has good support for database synchronization, associations, transactions and migrations. Sequelize is easy to test with frameworks like Mocha.

### Sequelize features

* has [TypeScript support](https://sequelize.org/master/manual/typescript.html), but with lots of manual typing. Luckily there’s [sequelize-typescript](https://www.npmjs.com/package/sequelize-typescript) that adds decorator support and reduces the amount of code required
* great [soft-delete feature](https://sequelize.org/master/manual/paranoid.html) - easy to configure (requiring basically 1 parameter in the model definition) and very easy to use (**WHERE** conditions for deleted records are always automatically applied - even when fetching relations)
* support for defining and using relations - you can add multiple conditionals that are relation-specific, add and remove fields.
* support for [sub-queries](https://sequelize.org/master/manual/sub-queries.html), but no query builder, so you have to write everything by hand

<Baner name={software-development} />

## Why we made the switch

Long story short: we wanted to use ActiveRecord pattern and ORM APIs as much as possible, but it was impossible to write our complex queries without query builder in TypeORM. This resulted in large, unreadable query-builder objects - these objects were defeating the purpose of using ActiveRecord. Apart from that, TypeORM documentation is lacking in several places.

Our application had a vast number of many-to-many relationships. We needed to restrict fetching the given resource based on relation values. With TypeORM for that case, we had to create a custom query using query builder, which resulted in writing lots of **leftJoin()**, **innerJoin()** etc. by hand.

With Sequelize we were able to utilize rich [finders API](https://sequelize.org/master/manual/model-querying-finders.html) - instead of coding our joins, we were utilizing relationships defined in the model, referencing them by name and applying all conditionals as method parameters.

Finders API also allows more complex operations like **findOrCreate** or **findOrBuild** which simplifies application codebase by getting rid of checking find result.

Sequelize is much more mature and a safer option to choose in the long-term (at least at the moment). It has twice as much weekly and monthly downloads as TypeORM, there are more contributors and releases are more frequent.

Besides, even TypeORM docs page isn’t quite up to date, as roadmap says the release 1.0.0 is planned for **Autumn 2018** (and it’s May 2020 already).

It was also a nice opportunity to refactor and clean-up our queries and server responses during the migration process.

## What was challenging

In the end, we used **Sequelize** with **sequelize-cli** and **sequelize-typescript**.

We faced a few challenges along the way with rewriting the codebase and setting up the environment for new packages.

When rewriting the codebase we had to make sure to create model definitions to use new decorators. Apart from that, we created migrations to use the new query interface and factories to use new models for tests.

We set the environment with two steps:

* the first one was about setting up **sequelize-cli** to accept TypeScript syntax through **ts-node** (I can provide more technical details if needed)
* and the second one to set up **sequelize-cli** to pick up **.ts** files when running migrations (by default it only accepts **.js** files - again, can provide codebase)

There is no possibility to build sub-queries with query-builder, so to keep code clean we started creating database views. This however raised another small issue: there is no option to mark that Model is **read-only** / it references database view. In tests, we were truncating every table in the database. Because of these two reasons combined we had to filter out models referencing **view tables** because these cannot be truncated.

We were not using Tree Entities from TypeORM so the switch was very easy because we didn’t have to re-create its behaviours.

## Summary

All in all, Sequelize is considered to be an easy-to-use ORM for Node.js while TypeORM is an ORm that can run in NodeJS and others. Sequelize belongs to Object Rational Mappers category while TypeORM can be primarily classified as a Microframework.

TypeORM supports Active Record and Data Mapper patterns unlike other JavaScript ORMs allowing you to write high quality, scalable and maintainable applications productively.

Sequelize has solid relations, read replications and transaction support and appears to be more popular among GitHub users.

If you are looking for help with your app development, contact our [custom software development teams](https://selleo.com/custom-software-development-company).

Learn how to migrate from TypeORM to Sequeliz and why? Focus on TypeORM migration by comparing each concept and its implementation in TypeORM and Sequelize.

Tomasz Romik

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