In 2018 JSCONF, a leading conference for the JavaScript community, Ryan Dahl delivered talks about “10 things I regretted about node.js”. He also introduced DENO, a safe runtime environment for JavaScript and scripts.
Ryan Dahl is the original creator of the runtime node.js environment if you are unconscious. After the node.js, he continued the development of a new project called Deno.
He introduced it in 2018 and after spending almost two years, the official version of Deno 1.0 was released on May 13, 2020.
This article aims to attract your attention to DENO and its important features. This blog removes all your confusion related to DENO development and JS node.
What is Deno?
DENO is a simple, safe, and advanced runtime environment for JavaScript and Typescript which means executing the javascript/script code outside the web browser like node.js.
It was made by Ryan Dahl. It uses a V8 engine and is built with rust programming languages.
The idea behind creating deno
- Will Deno change node.js?
- Is Deno Node.js next?
- Is Deno a node.js killer?
This is the title you observed through the web when you look for it. Because of the same creator, the majority of people have this impression that Deno will replace node.js in the near future.
This is the truth:
DENO is not made with the aim of replacing node.js. The idea behind making DENO is to overcome various problems through a strong scripting environment.
Node.js is a very powerful and popular platform. It was launched in 2009 and at that time, the state of JavaScript was different from now.
Many improvements have been made and are now developing, optimized, and advanced. This is standardized by organizations such as ECMA International.
Nodes have implemented new concepts that are then taken by language in different ways.
With many changes in Javascript and new additions such as press, developing with node.js has become boring.
There are many architectural errors in the node.js described by Ryan Dahl himself in one presentation. He showed some issues of fire security, design, and legacy.
As node.js is widely used by companies, and many applications are powered by node.js, it is difficult to make fundamental changes.
Deno discussed all these problems and tried to make a fun environment scripting to do.
What are the DENOJS features?
One of the most important features of DENO is – Support Support (and JavaScript) which is extraordinary without additional tools.
DENO is designed in such a way that it overcomes the complexity and security problem of node.js.
Important features of DENO:
- Safe by default
- Out of support box to press
- Easy installation without dependencies
- More complete and modern libraries
- Decentralized package management
Let’s discuss each in detail.
Secure:
Deno is safe while runtime node.js has access to almost everything including environment variables, reading / write to file systems, making network requests, and more.
When you run a knot program, it has access to almost everything and there is zero security.
This has been changed in Deno. There is no file access, network, or environment. If necessary, it is necessary to be activated explicitly.
The script cannot access the hard drive, open a network connection, or do any action without permission.
Permissions must be given to access hardware, files, or networks. Deno Code is run in a safe sandbox by default.
Out-of-the-box support to press:
Press offers an optional type for JavaScript which facilitates large-scale application development. It is managed by Microsoft and is a superset JavaScript.
Deno runtime is designed to keep the script in mind and the standard DENO module written in the press. This gives more control for the type in your project.
Unlike node.js, it offers support for first-class manuscripts.
Easy installation:
DENO is easily installed through only one file that can be executed.
No need to download additional libraries and organize the development environment. Install in a few clicks and start developing, it’s easy!
More complete & modern libraries:
Deno tries to offer a more complete and ready-to-use environment that makes development easy and fast.
It offers a standard set of high-quality modules reviewed by the core team. It utilizes JavaScript and modern lessons from node.js to offer a smooth runtime scripting environment.
Decentralized package management:
Good news for developers again! There is no package file.json! Deno has his own package manager, unlike Node’s NPM.
As we know, when you install any package via NPM, all the necessary dependencies need to be installed and it increases the complexity.
The DENO decentralization module system works well here. It offers several default tools to access third-party modules.
You can import third-party code or package via HTTP URL using a syntax familiar with JS and modern angles. The package is cached locally so it doesn’t need to be loaded on each process.
So, what is the future for Deno?
Well, talking truth, it’s very much in the development phase. Need to be tried and thoroughly tested to see the potential.
When the node.js was launched, it was a revolutionary idea at that time to work with Javascript for the backend with I/O asynchronous. Node.js a great success where Deno developed gradually.
Because of the same creator and script support, he quickly received the attention of the developer community throughout the world.
The company will start using it and experimenting with various cases of use. Meanwhile, DENO made progress with improvement, new features, and user bases.
Conclusion
In this blog you learn about the An Introductory Guide To Deno: How It Is Different From Node.js.
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