RequireJS vs Yarn

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RequireJS
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RequireJS vs Yarn: What are the differences?

RequireJS: JavaScript file and module loader. RequireJS loads plain JavaScript files as well as more defined modules. It is optimized for in-browser use, including in a Web Worker, but it can be used in other JavaScript environments, like Rhino and Node. It implements the Asynchronous Module API. Using a modular script loader like RequireJS will improve the speed and quality of your code; Yarn: A new package manager for JavaScript. Yarn caches every package it downloads so it never needs to again. It also parallelizes operations to maximize resource utilization so install times are faster than ever.

RequireJS and Yarn can be categorized as "Front End Package Manager" tools.

"Open source" is the primary reason why developers consider RequireJS over the competitors, whereas "Incredibly fast" was stated as the key factor in picking Yarn.

RequireJS and Yarn are both open source tools. It seems that Yarn with 36.1K GitHub stars and 2.21K forks on GitHub has more adoption than RequireJS with 12.2K GitHub stars and 2.3K GitHub forks.

Intuit, StackShare, and GigSalad, LLC are some of the popular companies that use Yarn, whereas RequireJS is used by Uber Technologies, Coursera, and Asana. Yarn has a broader approval, being mentioned in 609 company stacks & 507 developers stacks; compared to RequireJS, which is listed in 914 company stacks and 184 developer stacks.

What is RequireJS?

RequireJS loads plain JavaScript files as well as more defined modules. It is optimized for in-browser use, including in a Web Worker, but it can be used in other JavaScript environments, like Rhino and Node. It implements the Asynchronous Module API. Using a modular script loader like RequireJS will improve the speed and quality of your code.

What is Yarn?

Yarn caches every package it downloads so it never needs to again. It also parallelizes operations to maximize resource utilization so install times are faster than ever.
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    What are some alternatives to RequireJS and Yarn?
    Browserify
    Browserify lets you require('modules') in the browser by bundling up all of your dependencies.
    Webpack
    A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows to load parts for the application on demand. Through "loaders" modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.
    npm
    npm is the command-line interface to the npm ecosystem. It is battle-tested, surprisingly flexible, and used by hundreds of thousands of JavaScript developers every day.
    Bower
    Bower is a package manager for the web. It offers a generic, unopinionated solution to the problem of front-end package management, while exposing the package dependency model via an API that can be consumed by a more opinionated build stack. There are no system wide dependencies, no dependencies are shared between different apps, and the dependency tree is flat.
    Component
    Component's philosophy is the UNIX philosophy of the web - to create a platform for small, reusable components that consist of JS, CSS, HTML, images, fonts, etc. With its well-defined specs, using Component means not worrying about most frontend problems such as package management, publishing components to a registry, or creating a custom build process for every single app.
    See all alternatives
    Decisions about RequireJS and Yarn
    Tim Abbott
    Tim Abbott
    Founder at Zulip · | 3 upvotes · 7K views
    atZulipZulip
    Node.js
    Node.js
    npm
    npm
    Yarn
    Yarn

    I have mixed feelings on the Yarn/npm/Node.js ecosystem. We use it for Zulip, because you basically have to in order to have a modern JavaScript toolchain. And I like that Yarn lets us pin dependency versions out of the box for predictability in our production releases; we have to do significant work for the Python version of this feature.

    But one also deals with broken third-party dependencies uploaded to npm way too often (even ignoring the malicious packages issues that have gotten a lot of press of late). And one mostly has to use nvm in order to pin a specific version of node itself in a maintainable way, and nvm is a mess.

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    Russel Werner
    Russel Werner
    Lead Engineer at StackShare · | 5 upvotes · 6.3K views
    atStackShareStackShare
    npm
    npm
    Yarn
    Yarn

    We use Yarn because at the time we decided to adopt it, npm had some missing features and issues. We like the speed and determinism provided by Yarn. We could probably use npm at this point, but we have no real reason to switch from Yarn. If you have a convincing argument to switch from npm to Yarn please leave a comment on this decision!

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    Johnny Bell
    Johnny Bell
    Senior Software Engineer at StackShare · | 17 upvotes · 69.7K views
    ESLint
    ESLint
    Prettier
    Prettier
    Babel
    Babel
    npm
    npm
    Yarn
    Yarn
    Node.js
    Node.js
    Webpack
    Webpack
    #ES5
    #ES6

    So when starting a new project you generally have your go to tools to get your site up and running locally, and some scripts to build out a production version of your site. Create React App is great for that, however for my projects I feel as though there is to much bloat in Create React App and if I use it, then I'm tied to React, which I love but if I want to switch it up to Vue or something I want that flexibility.

    So to start everything up and running I clone my personal Webpack boilerplate - This is still in Webpack 3, and does need some updating but gets the job done for now. So given the name of the repo you may have guessed that yes I am using Webpack as my bundler I use Webpack because it is so powerful, and even though it has a steep learning curve once you get it, its amazing.

    The next thing I do is make sure my machine has Node.js configured and the right version installed then run Yarn. I decided to use Yarn because when I was building out this project npm had some shortcomings such as no .lock file. I could probably move from Yarn to npm but I don't really see any point really.

    I use Babel to transpile all of my #ES6 to #ES5 so the browser can read it, I love Babel and to be honest haven't looked up any other transpilers because Babel is amazing.

    Finally when developing I have Prettier setup to make sure all my code is clean and uniform across all my JS files, and ESLint to make sure I catch any errors or code that could be optimized.

    I'm really happy with this stack for my local env setup, and I'll probably stick with it for a while.

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    Yarn
    Yarn

    p.s.

    I am not sure about the performance of the latest version of npm, whether it is different from my understanding of it below. Because I use npm very rarely when I had the following knowledge.

    ------⏬

    I use Yarn because, first, yarn is the first tool to lock the version. Second, although npm also supports the lock version, when you use npm to lock the version, and then use package-lock.json on other systems, package-lock.json Will be modified. You understand what I mean, when you deploy projects based on Git...

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    Mark Nelissen
    Mark Nelissen
    CTO at Gemsotec bvba · | 4 upvotes · 2.9K views
    Yarn
    Yarn
    TypeScript
    TypeScript
    React
    React
    npm
    npm

    I use npm because I also mainly use React and TypeScript. Since several typings (from DefinitelyTyped) depend on the React typings, Yarn tends to mess up which leads to duplicate libraries present (different versions of the same type definition), which hinders the Typescript compiler. Npm always resolves to a single version per transitive dependency. At least that's my experience with both.

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    Jason Barry
    Jason Barry
    Cofounder at FeaturePeek · | 4 upvotes · 8.9K views
    atFeaturePeekFeaturePeek
    npm
    npm
    Yarn
    Yarn
    Babel
    Babel
    Sublime Text
    Sublime Text
    JavaScript
    JavaScript
    React
    React
    TypeScript
    TypeScript
    Flow (JS)
    Flow (JS)
    #Frontend

    I think our #Frontend stack is pretty standard – but we have taken some deviations from a typical modern stack:

    • Flow (JS) instead of TypeScript. Flow was an easy choice 2+ years ago, as both flow and React were (and still are) maintained by Facebook. Today, it seems that the JavaScript community has settled on TypeScript as the winner. For new projects, I'd choose TS, but I don't see the point in migrating an existing project from flowtype to TS, when the end result will be roughly the same. Sure, memory usage is a bit high, and every now and then I have to kill some zombie processes, but our text editors (Sublime Text), CI scripts, and Babel are already set up to take advantage of the type safety that flow offers. When/if the React team writes React itself in TS, then I'll take a closer look – until then, flow works for us.

    • Yarn instead of npm. When yarn debuted, we never looked back. Now npm has pretty much caught up with speed and lockfiles, but yarn gives me confidence that my dependency installs are deterministic. Really interested in the plug-n-play (PnP) feature that removes the need for a node_modules folder, but haven't implemented this yet.

    See more
    Yarn
    Yarn
    npm
    npm
    Node.js
    Node.js

    From a StackShare Community member: “I’m a freelance web developer (I mostly use Node.js) and for future projects I’m debating between npm or Yarn as my default package manager. I’m a minimalist so I hate installing software if I don’t need to- in this case that would be Yarn. For those who made the switch from npm to Yarn, what benefits have you noticed? For those who stuck with npm, are you happy you with it?"

    See more
    Interest over time
    Reviews of RequireJS and Yarn
    No reviews found
    How developers use RequireJS and Yarn
    Avatar of Mick Dekkers
    Mick Dekkers uses YarnYarn

    Yarn is a wonderful alternative to the built-in npm command-line interface. Dependency installation is crazy fast, because it caches every package and performs operations in parallel.

    Avatar of Volkan Özçelik
    Volkan Özçelik uses YarnYarn

    I prefer yarn instead of npm.

    Both npm and yarn work great.

    I don’t see any overwhelming reason to choose one over another.

    I just like yarn, that’s it.

    Avatar of Tarun Singh
    Tarun Singh uses RequireJSRequireJS

    Used Require.js to make the application modular. It provides better dependency management with asynchronous loading of scripts.

    Avatar of Kent Steiner
    Kent Steiner uses RequireJSRequireJS

    No real definitive reason, I find it to be the most natural way to import libraries and code in nodejs (prior to ES6 / import).

    Avatar of Promethean TV
    Promethean TV uses RequireJSRequireJS

    The RequireJS package manager is used by various web applications and services to manage dependencies on 3rd party libraries.

    Avatar of Ambar
    Ambar uses YarnYarn

    We use it in every JS project. Blazing fast package manager for node.js. Easy to use in Docker containers

    Avatar of Coolfront Technologies
    Coolfront Technologies uses YarnYarn

    Used in Coolfront Mobile and "Charlie" (flat rate search engine) as packaging mechanism.

    Avatar of Tim De Lange
    Tim De Lange uses RequireJSRequireJS

    Very nice way to structure a project, as long as you know it will not be a hybrid app.

    Avatar of Hevelop
    Hevelop uses RequireJSRequireJS

    RequireJS is the main component until Magento 2.2.x for frontend development.

    Avatar of IVS
    IVS uses YarnYarn

    We tend to stick to npm, yarn is only a fancy alternative, not 10x better.

    How much does RequireJS cost?
    How much does Yarn cost?
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