[Bug?]: Dynamic require is not supported after installing yarn

[smeng9]

Self-service

• I'd be willing to implement a fix

Describe the bug

I tried to use the COREPACK_HOME to install the yarn package manager to a local folder inside my repo so I can commit the package manager in an air-gapped environment. Then next time I no longer need to download the package manager with that specific version from internet.

I noticed the once I set COREPACK_HOME to . and if my package.json under that same directory contains "type": "module", the yarn will throw error.

To reproduce

Create a following package.json

{
    "name": "asdf",
    "private": true,
    "version": "2.0.116",
    "type": "module",
    "dependencies": {
        "react": "^19.1.0"
    },
    "packageManager": "[email protected]+sha512.f95ce356460e05be48d66401c1ae64ef84d163dd689964962c6888a9810865e39097a5e9de748876c2e0bf89b232d583c33982773e9903ae7a76257270986538"
}

Then in the same folder run the following command

export COREPACK_HOME=$(pwd)
corepack prepare yarn --activate

Run the yarn command and the following error shows up

Error: Dynamic require of "util" is not supported
at file:///home/node/v1/yarn/4.9.1/yarn.js:4:394
at file:///home/node/v1/yarn/4.9.1/yarn.js:4:3568
at file:///home/node/v1/yarn/4.9.1/yarn.js:4:474
at file:///home/node/v1/yarn/4.9.1/yarn.js:9:46383
at file:///home/node/v1/yarn/4.9.1/yarn.js:4:474
at file:///home/node/v1/yarn/4.9.1/yarn.js:413:15664
at file:///home/node/v1/yarn/4.9.1/yarn.js:759:448
at ModuleJob.run (node:internal/modules/esm/module_job:274:25)
at async onImport.tracePromise.proto (node:internal/modules/esm/loader:644:26)
at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:98:5)

Solution: If dynamic require is not supported, it should at least try a dynamic import as a fallback solution.

Environment

Note: I cannot run yarn from my if I installed the yarn to a local directory inside my repo. 


  System:
    OS: Linux 6.4 Debian GNU/Linux 12 (bookworm) 12 (bookworm)
    CPU: (8) arm64 unknown
  Binaries:
    Node: 23.11.0 - /tmp/xfs-8ee5826b/node
    Yarn: 4.9.1 - /tmp/xfs-8ee5826b/yarn
    npm: 10.9.2 - /usr/local/bin/npm

Additional context

No response