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chore: upgrade ESLint to v10 with flat config

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Upgrade ESLint from 8.57.0 to 10.5.0. ESLint 10 removes support for the
legacy `.eslintrc` format entirely, so the configuration is migrated to the
new flat config (`eslint.config.mjs`).

Changes:
- Bump `eslint` 8.57.0 -> 10.5.0 and `eslint-plugin-jest` to 29.15.2.
- Replace the legacy `@typescript-eslint/eslint-plugin` + `@typescript-eslint/parser`
  pair with the `typescript-eslint` meta-package (8.62.0), which supports ESLint 10.
- Replace the deprecated `eslint-plugin-node` (unmaintained, broken on ESLint 9+)
  with its maintained fork `eslint-plugin-n` (18.1.0); the single rule in use,
  `node/no-extraneous-import`, becomes `n/no-extraneous-import`.
- Add `@eslint/js` (10.0.1) and `globals` (17.7.0), now required by flat config.
- Translate `.eslintrc.js` to `eslint.config.mjs` and `.eslintignore` to the flat
  config `ignores`, preserving all existing rules and the test-file overrides.
- Update the `lint`/`lint:fix` scripts to invoke `eslint` directly (flat config is
  auto-detected; the `--config ./.eslintrc.js` flag is removed).

`preserve-caught-error` (new in ESLint 10's recommended set) is disabled to keep
the previous lint behavior; adopting it requires an ES2022 target and is left as a
follow-up. Only dev/lint dependencies change, so runtime deps and the built
`dist/` output are unchanged.

Note: `.eslintrc.js` was previously auto-synced from actions/reusable-workflows.
Upstream has not yet published a flat config, so this migration intentionally
deviates from that auto-sync until upstream catches up.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Bruno Borges
2026-06-22 17:44:16 -04:00
parent eab4b0854d
commit af5f874769
5 changed files with 693 additions and 785 deletions
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package.json
+9 -8
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@@ -11,8 +11,8 @@
"build": "ncc build -o dist/setup src/setup-java.ts && ncc build -o dist/cleanup src/cleanup-java.ts",
"format": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --write \"**/*.{ts,yml,yaml}\"",
"format-check": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --check \"**/*.{ts,yml,yaml}\"",
"lint": "eslint --config ./.eslintrc.js \"**/*.ts\"",
"lint:fix": "eslint --config ./.eslintrc.js \"**/*.ts\" --fix",
"lint": "eslint",
"lint:fix": "eslint --fix",
"prerelease": "npm run-script build",
"release": "git add -f dist/setup/index.js dist/cleanup/index.js",
"test": "jest"
@@ -40,21 +40,22 @@
"xmlbuilder2": "^4.0.3"
},
"devDependencies": {
"@eslint/js": "^10.0.1",
"@types/jest": "^30.0.0",
"@types/node": "^26.0.0",
"@types/semver": "^7.5.8",
"@typescript-eslint/eslint-plugin": "^8.48.0",
"@typescript-eslint/parser": "^8.61.1",
"@vercel/ncc": "^0.44.0",
"eslint": "^8.57.0",
"eslint": "^10.5.0",
"eslint-config-prettier": "^10.1.8",
"eslint-plugin-jest": "^29.0.1",
"eslint-plugin-node": "^11.1.0",
"eslint-plugin-jest": "^29.15.2",
"eslint-plugin-n": "^18.1.0",
"globals": "^17.7.0",
"jest": "^30.4.2",
"jest-circus": "^30.4.2",
"prettier": "^3.6.2",
"ts-jest": "^29.4.11",
"typescript": "^5.3.3"
"typescript": "^5.3.3",
"typescript-eslint": "^8.62.0"
},
"bugs": {
"url": "https://github.com/actions/setup-java/issues"