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yarnpkg
berry
TypeScript2020–2026
yarnpkg / berry

berry

📦🐈 Active development trunk for Yarn ⚒

19Distinct people
20Mentions
0Explicit recommenders
8.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

📦🐈 Active development trunk for Yarn ⚒

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

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No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year20 dated mentions

Observed mentions: 2020-01-25 20:20:28 UTC to 2026-06-10 10:31:42 UTC.

02462020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 6 mentions; 2 submissions, 4 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 4 mentions; 1 submissions, 3 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC624
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC312
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC202
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC202
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC413
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC303

What Hacker News says

20 sources
yarn pnp is currently broken on Node v25.7+; - https://github.com/yarnpkg/berry/issues/7065 - https://github.com/nodejs/node/issues/62012 This is because yarn patches fs in order to introduce virtual file path resolution of modules in the yarn cache (which are zips), which is quite brittle and was broken by a seemingly unrelated change in 25.7. The discussion in issue 62012 is notable - it was suggested yarn just wait for vfs to land. This is interesting to me in two ways: firstly, the node team seems quite happy for non-trivial amounts of the ecosystem to just be broken, and suggests relying on what I'm assuming will be an experimental API when it does land; secondly, it implies a lot of confidence that this feature will land before LTS.
In Node.js needs a virtual file system
Location: London, UK Remote: Yes Willing to relocate: No Technologies: Programming Languages: Java, C++, Ruby, JavaScript, TypeScript Web Technologies: HTML, CSS, ReactJS, NextJS, Electron, CSS in JS Mobile Development: React Native Back-end Technologies: NodeJS, RESTful APIs, GraphQL APIs, Database Management Database Technologies: PostgreSQL, Prisma, Postgres Résumé/CV: https://juresotosek.com/CV-JureSotosek.pdf Email: jure.sotosek@gmail.com Hi, I'm both a founder of a successful micro-startup and a Frontend leaning Full-stack Software Engineer looking for a new challenge. Highlights of my career: WrumerSound: I founded, developed, and scaled an e-commerce business around Wrumer, a device and app that simulates engine sounds through car speakers. Wrumer has achieved approximately €30k in monthly sales, tra
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nslating to around 5,000 units sold or €200k in revenue in the past 6 months. More about WrumerSound: https://wrumersound.com OpenSource: I've implemented features in Yarn, a major package manager with over 60 million downloads. You can see my specific contributions here: http://github.com/yarnpkg/berry/pull/1425. Microsoft: As a Software Engineer, I have been involved in the development and maintenance of Microsoft Teams, which has exposed me to a myriad of tools and technologies such as Java, Electron, JavaScript (including ES5 & ES6), TypeScript, ReactJS, and CSS in JS.
In Ask HN: Who wants to be hired? (November 2023)
I think Prolog really shines as an embedded query engine (I know this is old and it's been removed since). It's perfect for declarative configuration, very easy to write powerful queries once you wrap your head around it. The Yarn constraints plugin also used (Tau) Prolog, although it looks like it's in the process of being replaced with JS, which makes me a bit sad. The reasoning is here: https://github.com/yarnpkg/berry/issues/1276. Seems like the biggest issue is lack of a nice dev environment. I maintain the Trealla Prolog Wasm port (npm package 'trealla') and I hope some day to use it for a VSCode extension or LSP or something to provide a nice dev experience. Tau's performance has also been cited as an issue[1] but Trealla is quite fast and I expect it could easily handle a complex Yarn workspace with tons of facts. If this sounds l
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ike something you'd be interested in helping me with, feel free to contact me or make an issue/discussion here: https://github.com/guregu/trealla-js [1]: https://github.com/yarnpkg/berry/issues/4079#issuecomment-10...
In Using Prolog in Windows NT Network Configuration (1996)
Summarizing the 3 major JS package management approaches: * Classic node_modules: Dependencies of dependencies that can't be satisfied by a shared hoisted version are nested as true copies (OSes may apply copy-on-write semantics on top of this, but from FS perspective, these are real files). Uses standard Node.js node_modules resolution [1]. * pnpm: ~1 real copy of each dependency version, and packages use symlinks in node_modules to point to their deps. Also uses standard resolution. Requires some compatibility work for packages that wrongly refer to transitive dependencies or to peer dependencies. * pnp[2]: 1 real copy of each dependency version, but it's a zip file with Node.js and related ecosystem packages patched to read from zips and traverse dependency edges using a sort of import map. In addition to the compatibility work require
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d from pnpm, this further requires compatibility work around the zip "filesystem" indirection. In our real-world codebase, where we've done a modest but not exhaustive amount of package deduplication, pnpm confers around a 30% disk utilization savings, and pnp around a 80% savings. Interestingly, the innovations on top of classic node_modules are so compelling that the package managers that originally implemented pnpm and pnp (pnpm and Yarn, respectively) have implemented each others' linking strategies as optional configs [3][4]. If MacOS had better FUSE ergonomics, I'd be counting down the days for another linking strategy based on that too. [1] - https://nodejs.org/api/modules.html#loading-from-node_module... [2] - https://yarnpkg.com/features/pnp [3] - https://github.com/pnpm/pnpm/issues/2902 [4] - https://github.com/yarnpkg/berry/pull/3338
In pnpm: Fast, disk space efficient package manager for JavaScript
Hmm. Okay, digging around in the Yarn repo, I see this "generate patch" setup code [0]. Looks like they're trying to cherry-pick some specific commits from the TS repo based on the TS version, and specifically apply them to the TS file. The "base64" bit is referenced here [1]. I would assume this specifically relates to the fact that TS does not have native support for Yarn PnP as a filesystem approach. The Yarn team has been keeping an open PR against TS [2] and trying to convince the TS maintainers to merge it, but it hasn't happened yet. A bit odd, and I can understand why you're concerned, but it also looks like there's a very understandable reason for this. I would have assumed that this doesn't get applied if you install TypeScript via the Yarn v2 `node_modules` linker, but would have to try it out and actually see. [0] https://g
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In Node.js 15.0

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