{"id":364501,"date":"2021-11-09T15:42:05","date_gmt":"2021-11-09T12:42:05","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/"},"modified":"2021-11-09T15:42:05","modified_gmt":"2021-11-09T12:42:05","slug":"what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/","title":{"rendered":"#What is Deno and How Does It Differ From Node.js? \u2013 CloudSavvy IT"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2cbb814faf5\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2cbb814faf5\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#The_Basics\" >The Basics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#Security_and_Permissions\" >Security and Permissions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#Decentralized_Package_Management\" >Decentralized Package Management<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#Standard_Library_and_Nodejs_Interop\" >Standard Library and Node.js Interop<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#Which_Should_I_Use\" >Which Should I Use?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/buradabiliyorum.com\/en\/what-is-deno-and-how-does-it-differ-from-node-js-cloudsavvy-it\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>&#8220;#What is Deno and How Does It Differ From Node.js? \u2013 CloudSavvy IT&#8221;<\/strong><\/p>\n<div id=\"article-content-area\">\n<img loading=\"lazy\" decoding=\"async\" class=\"type:primaryImage aligncenter size-full wp-image-14557\" srcset=\"https:\/\/www.cloudsavvyit.com\/p\/uploads\/2021\/10\/47891d3f.jpg?width=398&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1 400w, https:\/\/www.cloudsavvyit.com\/p\/uploads\/2021\/10\/47891d3f.jpg?width=1198&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1 1200w\" sizes=\"auto, 400w, 1200w\" src=\"https:\/\/www.cloudsavvyit.com\/p\/uploads\/2021\/10\/47891d3f.jpg?width=1198&amp;trim=1,1&amp;bg-color=000&amp;pad=1,1\" alt=\"Graphic showing the Deno JavaScript runtime logo\" width=\"1600\" height=\"900\" onload=\"pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\" onerror=\"this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);\"\/><\/p>\n<p>Node.js is the de facto Java<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">Script<\/a> runtime for use on servers and local machines. It\u2019s well-liked, versatile, and supported by a strong community. Deno is a newer runtime that aims to address some of Node.js\u2019 shortcomings. Here\u2019s where Deno is hoping to improve.<\/p>\n<h2 id=\"the-basics\"><span class=\"ez-toc-section\" id=\"The_Basics\"><\/span>The Basics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Historically JavaScript was consigned to the web. Runtimes like Node.js have expanded the environments a JavaScript developer can target, making it feasible to build backend systems in the language.<\/p>\n<p>Both Node.js and <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.land\">Deno<\/a> are built atop the V8 JavaScript engine used by the Chrome browser. Node.js was founded in 2009 while Deno came along in 2018. Both projects were created by Ryan Dahl. Deno is Dahl\u2019s attempt to remake Node.js using lessons from the first ten years.<\/p>\n<p>Deno focuses on shipping a lightweight runtime that\u2019s secure by design. It\u2019s also got built-in support for TypeScript, the Microsoft-led typed superset of JavaScript that\u2019s becoming increasingly popular across the ecosystem. Straightaway this makes Deno a better candidate for people who prefer to work with the type protections TypeScript provides.<\/p>\n<h2 id=\"security-and-permissions\"><span class=\"ez-toc-section\" id=\"Security_and_Permissions\"><\/span>Security and Permissions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A large part of the Deno premise is founded on security. This extends down to the language it\u2019s written in: although both Node.js and Deno use V8, Deno eschews Node\u2019s C++ for the more modern Rust language. Rust offers similar performance levels but with greater safety.<\/p>\n<p>Deno features a strict permissions system that limits the capabilities made available to processes. They have no access to the network, filesystem, or outside environment until access is explicitly granted. By contrast, anything executed with Node.js can automatically use all three.<\/p>\n<p>The opt-in process for scripts that do need access <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.land\/manual\/getting_started\/permissions\">offers the choice<\/a> of command-line flags or a runtime permissions prompt. Flags can be really granular, such as <code>--allow-read=\/tmp<\/code> to permit filesystem access to a single directory. This empowers users and administrators to restrict programs to the minimum level of access they require.<\/p>\n<h2 id=\"what-about-package-management\"><span class=\"ez-toc-section\" id=\"Decentralized_Package_Management\"><\/span>Decentralized Package Management<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Love it or hate it, npm (the Node Package Manager) has become an integral part of modern JavaScript development for most. npm\u2019s a separate project to Node.js which could theoretically be distributed with Deno too. Deno doesn\u2019t include it though and there\u2019s no support for using packages from a <code>node_modules<\/code> directory.<\/p>\n<p>Node.js favors CommonJS modules as its module support predates the addition of native ES6 modules to the JavaScript standard. Deno requires the use of ES-style imports and allows the use of modules at arbitrary remote URLs:<\/p>\n<pre>import {anExport} from \"https:\/\/example.com\/example-package\/a-module.ts\";<\/pre>\n<p>Deno automatically downloads and compiles the module the first time you run your program. It\u2019ll then cache the result; just like an <code>npm install<\/code>, Deno programs will work when offline after a one-time download has been performed.<\/p>\n<p>This approach was chosen in lieu of the centralized distribution of npm packages. Node.js programs are usually inextricably bound to software in the central npm registry. If npm were to be unavailable, developers worldwide would be unable to acquire their dependencies. Deno advocates hosting modules anywhere and arbitrary HTTP URIs become acceptable \u201cregistries.\u201d<\/p>\n<h2 id=\"standard-library-and-node.js-interop\"><span class=\"ez-toc-section\" id=\"Standard_Library_and_Nodejs_Interop\"><\/span>Standard Library and Node.js Interop<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Deno includes a sizable <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.land\/std@0.112.0\">standard library<\/a> of modules reviewed by the core development team. Each module in the standard library is standalone with no external dependencies. The library is versioned and distributed independently of Deno releases; just like third-party modules, you need to use URLs to import components in your code.<\/p>\n<p>One of the modules within the standard library is a <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.land\/std@0.112.0\/node\">compatibility layer<\/a> for Node.js. This adds implementations of many of the key modules included with Node. It makes it easier to transition software written for Node to the Deno runtime.<\/p>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.com\/blog\/v1.15#improving-node-compatibility\">Deno 1.15<\/a>, released in October 2021, further enhanced the compatibility with Node. A new CLI flag, <code>--compat<\/code>, instructs Deno to configure the environment with all the global variables provided by Node. Built-ins like <code>process<\/code> aren\u2019t supported by Deno but using <code>--compat<\/code> makes them available on an opt-in basis.<\/p>\n<h2 id=\"which-should-i-use\"><span class=\"ez-toc-section\" id=\"Which_Should_I_Use\"><\/span>Which Should I Use?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Deno\u2019s unlikely to <em>replace<\/em> Node.js anytime soon, if ever. While Node isn\u2019t perfect, as Deno aptly highlights, it has the advantage of a massive community and very strong adoption. Migrating from Node.js to Deno isn\u2019t trivial; although the core JavaScript is unchanged, you\u2019d need to account for the differences in global variables, standard library components, and package management.<\/p>\n<p>For the foreseeable future, Node.js is probably still your best bet for <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/general\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"General\" target=\"_blank\" rel=\"noopener\">general<\/a>-purpose JavaScript programs. There\u2019s a wealth of frameworks, libraries, and tutorials available. Node\u2019s not stood still over the past few years either \u2013 there\u2019s now stable support for <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/nodejs.org\/api\/esm.html\">ES6 modules<\/a> and other language features like <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/v8.dev\/features\/top-level-await\">top-level <code>await<\/code><\/a>.<\/p>\n<p>Deno is a better option for new from-scratch projects at the cutting edge of the JavaScript ecosystem. If you\u2019re using TypeScript, want a decentralized package management system, or you need strong security controls, Deno is the more suitable option.<\/p>\n<p>While Deno\u2019s attracted a lot of interest and hype in the three years since its announcement, that\u2019s not yet converted into wide scale real-world usage. That doesn\u2019t mean you shouldn\u2019t use it though \u2013 Deno\u2019s now stable and backed by a strong standard library.<\/p>\n<p>It\u2019s best to assess each of your new projects against the individual characteristics of Node.js and Deno, then make a judgement as to which you use. Trying to use the same runtime for every codebase could mean you miss out on some of the strengths of the other platform.<\/p>\n<h2 id=\"summary\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Deno is a young JavaScript runtime from the original developer of Node.js. It addresses many of the shortcomings of Node, eschewing centralized package management for a fully distributed model, adding a fine-grained runtime-level permissions model, and integrating TypeScript as a first-class citizen.<\/p>\n<p>Although Deno\u2019s not yet got the same reach as Node.js, it\u2019s already a worthwhile contender for your next project. This is especially true if you want to make the switch to TypeScript or are developing a security-critical workload.<\/p>\n<p>Now that Deno\u2019s actively adding enhanced Node.js compatibility, it\u2019s possible that interest and adoption will begin to grow. The <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/deno.com\/blog\/v1.15#improving-node-compatibility\">Deno team<\/a> is working towards full Node emulation which could provide a viable transition pathway for existing projects.<\/p>\n<p>Deno\u2019s momentum may ultimately come from external factors, such as the strong growth in the TypeScript ecosystem. Deno\u2019s standard library is written in TypeScript, demonstrating its significance to the project. Although Node.js and TypeScript can be readily integrated, you need an inter<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">media<\/a>ry build stage to convert TypeScript source into JavaScript which Node can execute. Deno shortens the feedback loop, offering an improved developer experience with TypeScript integrated from the outset.\n<\/p><\/div>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more like this article, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/technology\/\" target=\"_blank\" rel=\"noopener\">Technology category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/www.cloudsavvyit.com\/14555\/what-is-deno-and-how-does-it-differ-from-node-js\/\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;#What is Deno and How Does It Differ From Node.js? \u2013 CloudSavvy IT&#8221; Node.js is the de facto JavaScript runtime for use on servers and local machines. It\u2019s well-liked, versatile, and supported by a strong community. Deno is a newer runtime that aims to address some of Node.js\u2019 shortcomings. Here\u2019s where Deno is hoping to&#8230;<\/p>\n","protected":false},"author":1,"featured_media":364502,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.cloudsavvyit.com\/p\/uploads\/2021\/10\/47891d3f.jpg","fifu_image_alt":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-364501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/364501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=364501"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/364501\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/364502"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=364501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=364501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=364501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}