imports do not work in flat config yarn pnp

[agarwalvaibhav0211]

While using Flat Configs with yarn pnp, the CLI command works, but eslint Extension throws error

Uncaught exception received.
Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'eslint-config-custom' imported from yarn-flat-config-eslint-error/a/eslint.config.js
    at new NodeError (node:internal/errors:405:5)
    at packageResolve (node:internal/modules/esm/resolve:887:9)
    at moduleResolve (node:internal/modules/esm/resolve:936:20)
    at defaultResolve (node:internal/modules/esm/resolve:1129:11)
    at nextResolve (node:internal/modules/esm/loader:163:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:835:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:424:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:77:40)
    at link (node:internal/modules/esm/module_job:76:36)

Error also occurs if public packages are imported

Error [ERR_MODULE_NOT_FOUND]: Cannot find package '@eslint/eslintrc' imported from yarn-flat-config-eslint-error/eslint.config.js
Did you mean to import @eslint-eslintrc-npm-3.0.2-1fbcfb08c5-d8c92f06bd.zip/node_modules/@eslint/eslintrc/dist/eslintrc.cjs?
    at new NodeError (node:internal/errors:405:5)
    at packageResolve (node:internal/modules/esm/resolve:887:9)
    at moduleResolve (node:internal/modules/esm/resolve:936:20)
    at defaultResolve (node:internal/modules/esm/resolve:1129:11)
    at nextResolve (node:internal/modules/esm/loader:163:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:835:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:424:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:77:40)
    at link (node:internal/modules/esm/module_job:76:36)

Here is a minimal reproduction: https://github.com/agarwalvaibhav0211/yarn-flat-config-eslint-error

[dbaeumer]

Which version of ESLint are you using. Good support for ESLint flat config requires 3.0.5 pre-release.

[agarwalvaibhav0211]

@dbaeumer, we are using v3.0.5 of the extension

[HajekTim]

I am having the exact same issue.

Commands to reproduce the error

yarn install
yarn add @eslint/js #not needed
yarn add eslint        #not needed
yarn dlx @yarnpkg/sdks vscode

Error message

[Error - 9:48:06 PM] An unexpected error occurred:
[Error - 9:48:06 PM] Error [ERR_MODULE_NOT_FOUND]: Cannot find package '@eslint/js' imported from C:\Users\timmi\VSCodeProjects\yarn-flat-config-eslint-error\eslint.config.mjs
Did you mean to import @eslint-js-npm-9.0.0-5e980024c8-10c0.zip/node_modules/@eslint/js/src/index.js?
    at new NodeError (node:internal/errors:405:5)
    at packageResolve (node:internal/modules/esm/resolve:863:9)
    at moduleResolve (node:internal/modules/esm/resolve:912:20)
    at defaultResolve (node:internal/modules/esm/resolve:1105:11)
    at nextResolve (node:internal/modules/esm/loader:166:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:840:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:429:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:77:40)
    at link (node:internal/modules/esm/module_job:76:36)

Environment data

Version: 1.88.0 (user setup)

Commit: 5c3e652f63e798a5ac2f31ffd0d863669328dc4c

Date: 2024-04-03T13:26:18.741Z

Electron: 28.2.8

ElectronBuildId: 27744544

Chromium: 120.0.6099.291

Node.js: 18.18.2

V8: 12.0.267.19-electron.0

OS: Windows_NT x64 10.0.22631

ESLint Extension: v3.0.5 (pre-release)

A reproducible repository can be found here:
https://github.com/HajekTim/yarn-flat-config-eslint-error

[dbaeumer]

@HajekTim thanks for the GitHub repository:

This is a problem with yarn pnp and flat config module files (mjs). See #1620 (comment)

Will close the issue since this is something that needs to be fixed in yarn or the yarn sdk generation.

[dbaeumer]

I created yarnpkg/berry#6219 to track this in yarn.