Migrate to eslint-plugin-import-x and update ESLint

[drdxk]

Summary

This PR migrates the ESLint configuration from the deprecated eslint-plugin-import to its maintained fork eslint-plugin-import-x, and updates ESLint to v10 along with related dependencies.

Key Changes

• Plugin Migration: Replaced eslint-plugin-import with eslint-plugin-import-x throughout the ESLint configuration

  • Updated import statement in base.js
  • Updated plugin registration from import to import-x
  • Updated all rule references from import/* to import-x/*
  • Updated settings from import/resolver to import-x/resolver

• Dependency Updates:

  • @eslint/js: 9.39.3 → 10.0.1
  • eslint-plugin-import: 2.32.0 → eslint-plugin-import-x: 4.16.2
  • eslint: 9.39.3 → 10.0.3 (in pnpm-workspace.yaml)
  • Node.js minimum version: >=20.0.0 → >=20.19.0

• New Configuration: Added a new ESLint config block for compile-test files (*.ct.ts) that disables the no-useless-assignment rule, as these files intentionally reassign variables for type verification purposes

Implementation Details

The migration to eslint-plugin-import-x is a drop-in replacement that maintains API compatibility while providing ongoing maintenance and support. All rule names and configuration options remain functionally equivalent, requiring only namespace updates from import to import-x.

https://claude.ai/code/session_01X3NZHpVLUe4JEuhHi9Gs9f

[Copilot]

Pull request overview

This PR upgrades the monorepo’s ESLint tooling to ESLint v10 and updates the shared ESLint configuration package to use eslint-plugin-import-x (instead of eslint-plugin-import), including a small rule override for compile-test (*.ct.ts) files.

Changes:

• Bump workspace ESLint version to 10.0.3 and update the lockfile accordingly.
• Update @repo/config-eslint to use @eslint/js@10 and replace eslint-plugin-import rules/settings with eslint-plugin-import-x.
• Add a *.ct.ts flat-config override to disable no-useless-assignment.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
pnpm-workspace.yaml	Bumps the catalog ESLint version to v10.
pnpm-lock.yaml	Updates lockfile for ESLint v10 and new dependency graph (incl. import-x).
packages/config-eslint/package.json	Moves shared config dependencies to @eslint/js@10 and eslint-plugin-import-x.
packages/config-eslint/base.js	Switches plugin key/rules to import-x/* and adds a *.ct.ts override.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (1)

pnpm-lock.yaml:1229

• With ESLint bumped to v10, the lockfile still resolves eslint-plugin-import@2.32.0, which declares a peer dependency on eslint only up to ^9. This will produce peer dependency warnings (and can break installs in environments that enforce strict peer deps). If eslint-plugin-import is no longer needed, consider removing it from the resolved graph (e.g., via pnpm overrides / dependency cleanup) or upgrading/replacing it with a package that supports ESLint 10.

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[Copilot]

Pull request overview

Updates the repo’s linting toolchain to ESLint v10 and migrates the shared ESLint config away from eslint-plugin-import to eslint-plugin-import-x, including resolver changes to match the new plugin/resolver ecosystem.

Changes:

• Bump ESLint to 10.0.3 via pnpm catalogs and update the lockfile accordingly.
• Switch @repo/config-eslint from eslint-plugin-import to eslint-plugin-import-x and update rule/setting namespaces.
• Add pnpm overrides to prevent eslint-plugin-import from being pulled in as an optional peer; raise the repo’s Node engine minimum to >=22.13.0.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pnpm-workspace.yaml	Updates ESLint catalog version and adds an override to prevent installing eslint-plugin-import.
pnpm-lock.yaml	Lockfile refresh for ESLint 10 upgrade, import-x migration, and overrides.
packages/config-eslint/package.json	Replaces eslint-plugin-import with eslint-plugin-import-x and bumps @eslint/js.
packages/config-eslint/base.js	Migrates rules/settings to import-x/* and configures resolver via resolver-next.
package.json	Raises minimum supported Node version to meet new ESLint dependency engine constraints.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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