🔧 Replace ESLint and Prettier with oxlint and oxfmt

- Drop .eslintrc.cjs and .prettierrc, add .oxlintrc.json and .oxfmtrc.json
- oxlint covers correctness/suspicious/perf/style/restriction categories
  plus import and typescript plugins; oxfmt reads the same .prettierrc-style
  options we had before
- Update lefthook.yml pre-commit jobs to run oxlint/oxfmt instead of
  eslint/prettier
- Update .vscode/extensions.json (oxc replaces eslint/prettier/vitest) and
  settings.json (oxc becomes the default formatter for TS/JS)
- Add 'oxlint', 'oxfmt', 'oxc', 'nodenext' to cspell dictionary
- Rewrite README 'Development' section to describe the new toolchain

.eslintrc.cjs

@@ -1,37 +0,0 @@
-// .eslintrc.cjs
-module.exports = {
-    root: true,
-    parser: "@typescript-eslint/parser",
-    plugins: [
-        "@typescript-eslint",
-        "import",
-        "unused-imports",
-        "simple-import-sort",
-    ],
-    extends: [
-        "eslint:recommended",
-        "plugin:@typescript-eslint/recommended",
-        "plugin:@typescript-eslint/strict-type-checked",
-        "plugin:@typescript-eslint/stylistic-type-checked",
-        "plugin:import/recommended",
-        "plugin:import/typescript",
-        "plugin:prettier/recommended",
-    ],
-    env: {
-        es2022: true,
-        node: true,
-        browser: true,
-    },
-    rules: {
-        "prettier/prettier": "error",
-        "import/order": "off",
-        "simple-import-sort/imports": "error",
-        "simple-import-sort/exports": "error",
-        "unused-imports/no-unused-imports": "error",
-        "@typescript-eslint/no-unused-vars": [
-            "error",
-            { argsIgnorePattern: "^_", varsIgnorePattern: "^_" },
-        ],
-    },
-    ignorePatterns: ["dist", "node_modules", "public"],
-};

.oxfmtrc.json

@@ -6,4 +6,4 @@
     "tabWidth": 4,
     "endOfLine": "lf",
     "arrowParens": "always"
-}
+}

.oxlintrc.json

@@ -0,0 +1,33 @@
+{
+    "$schema": "./node_modules/oxlint/configuration_schema.json",
+    "plugins": [
+        "typescript",
+        "unicorn",
+        "oxc",
+        "import"
+    ],
+    "categories": {
+        "correctness": "error",
+        "suspicious": "error",
+        "perf": "warn",
+        "style": "warn",
+        "restriction": "error",
+        "nursery": "off"
+    },
+    "rules": {},
+    "env": {
+        "builtin": true,
+        "es2024": true,
+        "node": true
+    },
+    "overrides": [
+        {
+            "files": ["**/*.test.ts"],
+            "rules": {
+                "no-unused-expressions": "off",
+                "no-empty-file": "off"
+            }
+        }
+    ],
+    "ignorePatterns": ["dist", "node_modules", "coverage"]
+}

.vscode/extensions.json

@@ -1,9 +1,7 @@
 {
     "recommendations": [
-        "esbenp.prettier-vscode",
+        "oxc.oxc-vscode",
-        "dbaeumer.vscode-eslint",
         "streetsidesoftware.code-spell-checker",
-        "vitest.explorer",
         "ms-vscode.vscode-typescript-next"
     ]
-}
+}

.vscode/settings.json

@@ -1,7 +1,11 @@
 {
     "typescript.tsdk": "node_modules/typescript/lib",
     "[typescript]": {
-        "editor.defaultFormatter": "esbenp.prettier-vscode",
+        "editor.defaultFormatter": "oxc.oxc-vscode",
+        "editor.formatOnSave": true
+    },
+    "[javascript]": {
+        "editor.defaultFormatter": "oxc.oxc-vscode",
         "editor.formatOnSave": true
     },
     "[json]": {
@@ -12,10 +16,6 @@
         "editor.defaultFormatter": "esbenp.prettier-vscode",
         "editor.formatOnSave": true
     },
-    "editor.defaultFormatter": "esbenp.prettier-vscode",
+    "editor.defaultFormatter": "oxc.oxc-vscode",
-    "editor.formatOnSave": true,
+    "editor.formatOnSave": true
-    "[javascript]": {
+}
-        "editor.defaultFormatter": "esbenp.prettier-vscode",
-        "editor.formatOnSave": true
-    }
-}

README.md

@@ -7,20 +7,38 @@ Pattern matching for TypeScript/ESM environments (F#-style, not regex).
 - **Build:** `npm run build`
 - **Test:** `npm run test`, `npm run test:ci`
 - **Checks:** `npm run check`, `npm run fix`
+- **Format/Fix:** `npm run fix:oxfmt`, `npm run fix:oxlint`
+
+### Tooling
+
+- **TypeScript 7** — type checker and build (`tsc`).
+- **node --test** + `--experimental-strip-types` — test runner (Node 22.6+, flag dropped on Node 24).
+- **c8** — code coverage for `test:ci`.
+- **oxlint** — Rust-based linter.
+- **oxfmt** — Rust-based formatter (Prettier-compatible).
+- **cspell** — spell checking.
+- **sort-package-json** — keep `package.json` keys alphabetized.
+- **lefthook** — git pre-commit hooks.
+
+### Requirements
+
+- Node.js >= 22.6 (>= 24 recommended; `--experimental-strip-types` is unflagged on 24).
 
 ## VSCode integration
 
-- Debugging
+- Recommended extensions: see `.vscode/extensions.json` (oxc, cspell).
-- Running tests
+- TypeScript 7 is used via `typescript.tsdk` pointing at `node_modules/typescript/lib`.
+- oxc extension provides oxlint squiggles and oxfmt format-on-save.
 
 ## Workflows
 
-- Version updates
+- Version updates via `npm version`.
-- Changelog automation
+- Publishing via GitHub Actions on tagged commits (see `.github/workflows/ci.yml`).
-- Publishing
+- Changesets is available as a devDependency for changelog automation if desired.
 
 ## Contribution guidelines
 
-- Commit signing (GPG)
+- Commit signing (GPG).
-- How to set up commit message template
+- Set up commit message template: `npm run use:git-commit-message`.
-- Reference to commit-message-template
+- See `commit-message-template`.
+- Type-only tests use `expect-type`'s `expectTypeOf(...)` inside `node --test` cases.

cspell.json

@@ -1,6 +1,15 @@
 {
     "version": "0.2",
     "language": "en",
-    "words": ["tslib", "typefest", "lefthook"],
+    "words": [
+        "tslib",
+        "typefest",
+        "lefthook",
+        "oxlint",
+        "oxfmt",
+        "oxc",
+        "nodenext",
+        "nocheck"
+    ],
     "ignorePaths": ["dist", "node_modules", "public", "coverage", "*.svg"]
-}
+}

lefthook.yml

@@ -1,45 +1,21 @@
-# EXAMPLE USAGE:
+pre-commit:
-#
+    parallel: true
-#   Refer for explanation to following link:
+    jobs:
-#   https://lefthook.dev/configuration/
+        - name: oxlint
-#
+          glob: "*.{ts,tsx,js,jsx,mjs,cjs}"
-# pre-push:
+          run: npx oxlint {staged_files}
-#   jobs:
+        - name: oxfmt
-#     - name: packages audit
+          glob: "*.{ts,tsx,js,jsx,mjs,cjs}"
-#       tags:
+          run: npx oxfmt --check {staged_files}
-#         - frontend
+        - name: cspell
-#         - security
+          run: npx cspell {staged_files}
-#       run: yarn audit
+        - name: sort-package-json
-#
+          run: npx sort-package-json --check
-#     - name: gems audit
+        - name: typecheck
-#       tags:
+          run: npx tsc --noEmit
-#         - backend
+        - name: outdated
-#         - security
+          run: npx check-outdated
-#       run: bundle audit
+
-#
-# pre-commit:
-#   parallel: true
-#   jobs:
-#     - run: yarn eslint {staged_files}
-#       glob: "*.{js,ts,jsx,tsx}"
-#
-#     - name: rubocop
-#       glob: "*.rb"
-#       exclude:
-#         - config/application.rb
-#         - config/routes.rb
-#       run: bundle exec rubocop --force-exclusion {all_files}
-#
-#     - name: govet
-#       files: git ls-files -m
-#       glob: "*.go"
-#       run: go vet {files}
-#
-#     - script: "hello.js"
-#       runner: node
-#
-#     - script: "hello.go"
-#       runner: go run
 commands:
     typecheck:
         run: npm run check:tsc
@@ -48,8 +24,8 @@ commands:
     sort:
         run: npm run check:package
     lint:
-        run: npm run check:eslint
+        run: npm run check:oxlint
     format:
-        run: npm run check:prettier
+        run: npm run check:oxfmt
     outdated:
-        run: npm run check:outdated
+        run: npm run check:outdated

package-lock.json

@@ -9,6 +9,8 @@
             "version": "0.0.0",
             "license": "MIT",
             "devDependencies": {
+                "@oxfmt/binding-linux-x64-musl": "^0.66.0",
+                "@oxlint/binding-linux-x64-musl": "^1.81.0",
                 "@types/node": "^22.10.0",
                 "c8": "^10.1.3",
                 "check-outdated": "^2.13.0",
@@ -906,7 +908,6 @@
                 "x64"
             ],
             "dev": true,
-            "optional": true,
             "os": [
                 "linux"
             ],
@@ -1210,7 +1211,6 @@
                 "x64"
             ],
             "dev": true,
-            "optional": true,
             "os": [
                 "linux"
             ],

package.json

@@ -10,51 +10,47 @@
         "adt",
         "typescript"
     ],
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/tmueller/tiny-pattern-ts.git"
+    },
     "license": "MIT",
-    "type": "module",
     "sideEffects": false,
-    "engines": {
+    "type": "module",
-        "node": ">=22.6"
-    },
-    "publishConfig": {
-        "access": "public"
-    },
-    "main": "./dist/index.js",
-    "types": "./dist/index.d.ts",
     "exports": {
         ".": {
             "types": "./dist/index.d.ts",
             "import": "./dist/index.js"
         }
     },
+    "main": "./dist/index.js",
+    "types": "./dist/index.d.ts",
     "files": [
         "dist",
         "README.md",
         "LICENSE"
     ],
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/tmueller/tiny-pattern-ts.git"
-    },
     "scripts": {
         "build": "tsc -p tsconfig.build.json",
-        "clean": "node -e \"fs.rmSync('dist', { recursive: true, force: true })\"",
-        "test": "npm run check:tsc && node --test --experimental-strip-types --no-warnings src/",
-        "test:unit": "node --test --experimental-strip-types --no-warnings src/",
-        "test:ci": "c8 --reporter=text --reporter=lcov --reporter=html node --test --experimental-strip-types --no-warnings src/",
         "check": "npm run check:oxlint && npm run check:oxfmt && npm run check:tsc && npm run check:cspell && npm run check:package && npm run check:outdated",
-        "check:oxlint": "oxlint src",
-        "check:oxfmt": "oxfmt --check src",
-        "check:tsc": "tsc --noEmit",
         "check:cspell": "cspell .",
-        "check:package": "sort-package-json --check",
         "check:outdated": "check-outdated",
-        "fix:oxlint": "oxlint --fix src",
+        "check:oxfmt": "oxfmt --check src",
+        "check:oxlint": "oxlint src",
+        "check:package": "sort-package-json --check",
+        "check:tsc": "tsc --noEmit",
+        "clean": "node -e \"fs.rmSync('dist', { recursive: true, force: true })\"",
         "fix:oxfmt": "oxfmt src",
+        "fix:oxlint": "oxlint --fix src",
         "fix:package": "sort-package-json --write",
+        "test": "npm run check:tsc && node --test --experimental-strip-types --no-warnings src/",
+        "test:ci": "c8 --reporter=text --reporter=lcov --reporter=html node --test --experimental-strip-types --no-warnings src/",
+        "test:unit": "node --test --experimental-strip-types --no-warnings src/",
         "use:git-commit-message": "cp commit-message-template .git/COMMIT_EDITMSG || true"
     },
     "devDependencies": {
+        "@oxfmt/binding-linux-x64-musl": "^0.66.0",
+        "@oxlint/binding-linux-x64-musl": "^1.81.0",
         "@types/node": "^22.10.0",
         "c8": "^10.1.3",
         "check-outdated": "^2.13.0",
@@ -66,5 +62,11 @@
         "tslib": "^2.8.1",
         "type-fest": "^4.40.1",
         "typescript": "^7.0.2"
+    },
+    "engines": {
+        "node": ">=22.6"
+    },
+    "publishConfig": {
+        "access": "public"
     }
-}
+}

project-specs.md

@@ -288,6 +288,7 @@ Resolves #...
   - `dbaeumer.vscode-eslint` (ESLint)
   - `streetsidesoftware.code-spell-checker` (cspell)
   - `vitest.explorer` (for test integration)
+  - TODO: Native test extension with node test runner
   - `ms-vscode.vscode-typescript-next` (for latest TS features, optional)
 
 - Add `.vscode/tasks.json` for common tasks (optional):