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Yarn

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pre-commit by Yelp

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Yarn vs pre-commit by Yelp: What are the differences?

What is 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.

What is pre-commit by Yelp? A framework for managing and maintaining multi-language pre-commit hooks. If one of your developers doesn’t have node installed but modifies a JavaScript file, pre-commit automatically handles downloading and building node to run jshint without root. Pre-commit is a multi-language package manager for pre-commit hooks. You specify a list of hooks you want and pre-commit manages the installation and execution of any hook written in any language before every commit. pre-commit is specifically designed to not require root access.

Yarn can be classified as a tool in the "Front End Package Manager" category, while pre-commit by Yelp is grouped under "Git Tools".

Yarn and pre-commit by Yelp are both open source tools. It seems that Yarn with 36.2K GitHub stars and 2.22K forks on GitHub has more adoption than pre-commit by Yelp with 3.09K GitHub stars and 234 GitHub forks.

Advice on Yarn and pre-commit by Yelp
Needs advice
on
npm
and
Yarn

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?"

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Replies (14)
Julian Sanchez
Lead Developer at Chore Champion · | 10 upvotes · 110.5K views
Recommends
Yarn
at

We use Yarn because it allows us to more simply manage our node_modules. It also simplifies commands and increases speed when installing modules. Our teams module download time was cut in half after switching from NPM to Yarn. We now require all employees to use Yarn (to prevent errors with package-lock.json and yarn.lock).

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Recommends
npm

I use npm since new version is pretty fast as well (Yarn may be still faster a bit but the difference isn't huge). No need for other dependency and mainly Yarn sometimes do not work. Sometimes when I want to install project dependencies I got error using Yarn but with npm everything is installed correctly.

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Recommends
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
Recommends
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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Recommends
Yarn

As far as I know Yarn is a super module of NPM. But it still needs npm to run.

Yarn was developed by Facebook's guys to fix some npm issues and performance.

If you use the last version of npm most of this problem does not exist anymore.

You can choose the option which makes you more confortable. I like using yarn because I'm used to it.

In the end the packages will be the same. Just try both and choose the one you feel more confortable. :)

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Shuuji TAKAHASHI
Recommends
Yarn

I use Yarn because it outputs nice progress messages with cute emoji and installs packages quickly if the package is cached. Also, Yarn creates yarn.lock file which makes the developer use the consistent environment.

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Denys Slipetskyy
Recommends
Yarn
at

I use Yarn because it process my dependencies way faster, predictable deps resolution order, upgrade-interactive is very handy + some Yarn specific features (workspaces, Plug’n’Play alternative installation strategy) ...

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tataata
Frontend designer and developer · | 2 upvotes · 98.6K views
Recommends
Yarn

Yarn made it painless for the team to sync on versions of packages that we use on the project <3

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Recommends
npm

I use npm because its the official package manager for Node. It's reliability, security and speed has increased over time so the battle is over!

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Izzur Zuhri
Recommends
npm

I use npm because it has a lot of community support and the performance difference with alternative tool is not so significant for me.

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Tor Hagemann
Principal Software Engineer at Socotra · | 2 upvotes · 1 views
Recommends
Yarn
npm

You should use whichever had the best DX (developer experience) for your team. If you are doing a massive front-end project, consider yarn if not only because it makes it a snap to go from zero to ready. What some people say about npm being more stable or easier for smaller projects is highly true as well. (not to mention, you sometimes have to install yarn) But, note that official NodeJS Docker images ship with both npm and yarn. If you want to use yarn, put package-lock=false and optionally save-exact=true in your project's .npmrc file. Compare whether you prefer the ergonomics of yarn global add over npm install -g or see fewer meaningless warnings for the specific set of dependencies you leverage.

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Recommends
Yarn

I am a minimalist too. I once had issues with installing Nuxt.js using NPM so I had to install Yarn but I also found that the Dev experience was much better

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Francois Leurent
Recommends
npm
at

We tend to stick to npm, yarn is only a fancy alternative, not 10x better. Using a self -hosted private repository (via sinopia/npm-mirror) make package locking (mostly) pointless.

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Digital All
Recommends
npm

I use npm because its packaged with node installation and handles npm tokens in CI/CD tools for private packages/libraries.

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Decisions about Yarn and pre-commit by Yelp
Oleksandr Fedotov
Senior Software Engineer at joyn · | 3 upvotes · 122.5K views

As we have to build the application for many different TV platforms we want to split the application logic from the device/platform specific code. Previously we had different repositories and it was very hard to keep the development process when changes were done in multiple repositories, as we had to synchronize code reviews as well as merging and then updating the dependencies of projects. This issues would be even more critical when building the project from scratch what we did at Joyn. Therefor to keep all code in one place, at the same time keeping in separated in different modules we decided to give a try to monorepo. First we tried out lerna which was fine at the beginning, but later along the way we had issues with adding new dependencies which came out of the blue and were not easy to fix. Next round of evolution was yarn workspaces, we are still using it and are pretty happy with dev experience it provides. And one more advantage we got when switched to yarn workspaces that we also switched from npm to yarn what improved the state of the lock file a lot, because with npm package-lock file was updated every time you run npm install, frequent updates of package-lock file were causing very often merge conflicts. So right now we not just having faster dependencies installation time but also no conflicts coming from lock file.

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Petr Bambušek
Head of Frontend at Mews · | 2 upvotes · 132.3K views
Chose
Yarn
over
npm
at
()

This was no real choice - we switched the moment Yarn was available, and never looked back. Yarn is the only reasonable frontend package manager that's actually being developed. They even aim to heal the node_modules madness with v2! Npm is just copying its ideas on top of introducing massive bugs with every change.

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Pros of Yarn
Pros of pre-commit by Yelp
  • 84
    Incredibly fast
  • 21
    Easy to use
  • 12
    Open Source
  • 10
    Can install any npm package
  • 7
    Works where npm fails
  • 6
    Workspaces
  • 2
    Incomplete to run tasks
  • 2
    Multiple language support
  • 1
    Modular

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Cons of Yarn
Cons of pre-commit by Yelp
  • 15
    Facebook
  • 6
    Sends data to facebook
  • 3
    Should be installed separately
  • 2
    Cannot publish to registry other than npm
    Be the first to leave a con

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    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.

    What is pre-commit by Yelp?

    If one of your developers doesn’t have node installed but modifies a JavaScript file, pre-commit automatically handles downloading and building node to run jshint without root. Pre-commit is a multi-language package manager for pre-commit hooks. You specify a list of hooks you want and pre-commit manages the installation and execution of any hook written in any language before every commit. pre-commit is specifically designed to not require root access.

    Need advice about which tool to choose?Ask the StackShare community!

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      Blog Posts

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