Let's use corepack!

[goisaki]

What is corepack?

Corepack is a zero-runtime-dependency Node.js script that acts as a bridge between Node.js projects and the package managers they are intended to be used with during development. In practical terms, Corepack lets you use Yarn, npm, and pnpm without having to install them.

from nodejs/corepack

Why?

corepack automatically installs the version of the package manager specified in package.json.
This will prevent problems caused by different versions, and will make version upgrades and package manager changes easier.

How?

Corepack is distributed by default with all recent Node.js versions. Run corepack enable to install the required Yarn and pnpm binaries on your path.

from nodejs/corepack

What do I want to do?

Use pnpm. (Déjà vu...? #1392)
It's no surprise that cool other repositories are using pnpm now. For example Next.js, Nuxt, Vite, Astro.
(Repositories using pnpm workspace)
And it's secure and, most importantly, fast.

Please wait! pnpm may possibly cause a dependency-related problem. I’ll try to investigate it. Anyway, thanks!

Originally posted by @yusukebe in #1392 (comment)

Look at this table.

Feature	pnpm	Yarn
Workspace support	✔️	✔️
Isolated node_modules	✔️ - The default	✔️
Hoisted node_modules	✔️	✔️
Autoinstalling peers	✔️	❌
Plug'n'Play	✔️	✔️ - The default
Zero-Installs	❌	✔️
Patching dependencies	✔️	✔️
Managing Node.js versions	✔️	❌
Has a lockfile	✔️ - pnpm-lock.yaml	✔️ - yarn.lock
Dynamic package execution	✔️ - Via pnpm dlx	✔️ - Via yarn dlx

(Taken from Feature Comparison (pnpm).)

And the fact that it is used in many major repositories would attest to this table.

---

@yusukebe If you are interested, I'll make a pr right away.

Originally #1392 and #1405 by @yusukebe and @ThatOneBro. Thanks!

[yusukebe]

@nabeken5

Thanks for suggesting. I can't explain this specifically yet, as I commented below, but I have tried and had problems.

#1392 (comment)

I will compare yarn and pnpm again, so please wait a while.

[yusukebe]

As for Corepack, we use Yarn 4 with honojs/middleware etc. It is very good.

[goisaki]

@yusukebe
I would like to know what problems you have had. I know there are people in the Hono community who can help you with your problems, and I want to help.
(If you have another reason for not wanting to use pnpm, please say so)

Anyway, I want to introduce corepack with yarn. May I?