feat: integrate oxfmt tool for formatting code (#466)

.github/dependabot.yml

···
           - "@types/*"
       voidzero:
         patterns:
+          - "oxfmt"
           - "oxlint"
           - "rolldown"
           - "rolldown-vite"

.github/workflows/main.yml

···
       - name: Build packages
         run: npm run build
 
-  lint:
-    name: lint
+  codequality:
+    name: codequality (${{ matrix.tool }})
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - tool: oxfmt
+            tool-purpose: formatter
+            npm-script: fmt-ci
+          - tool: oxlint
+            tool-purpose: linter
+            npm-script: lint
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
···
       - name: Install dependencies
         run: npm ci --verbose
       - name: Print environment info
-        run: npx oxlint --version
-      - name: Lint
-        run: npm run lint
+        run: npx ${{ matrix.tool }} --version
+      - name: Run ${{ matrix.tool-purpose }} checks
+        run: npm run ${{ matrix.npm-script }}
 
   test:
     runs-on: ubuntu-latest

.oxfmtrc.json

···
+{
+	"$schema": "./node_modules/oxfmt/configuration_schema.json",
+	"useTabs": true,
+	"semi": false,
+	"singleQuote": true,
+	"trailingComma": "all"
+}

README.md

···
 - [x] Uses the [VoidZero](https://voidzero.dev)-based JS toolchain
   - [x] [Vite](https://vitejs.dev/) & [tsdown](https://tsdown.dev) for bundling & minifying source code
   - [x] [Vitest](https://vitest.dev/) for unit testing & code coverage
-  - [x] [Oxlint](https://oxc.rs/docs/guide/usage/linter.html) for linting code
+  - [x] [Oxfmt](https://oxc.rs/docs/guide/usage/formatter.html) & [Oxlint](https://oxc.rs/docs/guide/usage/linter.html) for formatting & linting code
 
 ## Getting started
 
···
 | `npm run test-ui`     | Run unit tests in UI/browser mode |
 | `npm run test-html`   | View test results in browser |
 | `npm run test-json`   | View test results in JSON format |
-| `npm run lint`        | Check for Oxlint errors |
-| `npm run fix`         | Fix Oxlint errors |
+| `npm run fmt`         | Apply formatting fixes |
+| `npm run fmt-ci`      | Check for formatting issues (used for CI) |
+| `npm run lint`        | Check for Oxlint issues |
+| `npm run fix`         | Apply Oxlint fixes |
 
 ### Developer tools
 | Tool               | File | Documentation |
···
 | NPM                | [`package.json`](package.json), [`packages/*/package.json`](./packages/pkg1/package.json) | [docs](https://docs.npmjs.com/cli/v10/configuring-npm/package-json), [website](https://docs.npmjs.com/) |
 | TypeScript         | [`tsconfig.json`](./tsconfig.json), [`packages/*/tsconfig.json`](packages/pkg1/tsconfig.json) | [docs](https://www.typescriptlang.org/tsconfig), [website](https://www.typescriptlang.org/) |
 | TypeDoc            | [`tsconfig.json`](tsconfig.json) (`typedocOptions`) | [docs](https://typedoc.org/options/configuration/), [website](https://typedoc.org/) |
-| Oxlint             | [`.oxlintrc.json`](./.oxlintrc.json) | [docs](https://oxc.rs/docs/guide/usage/linter/config.html), [website](https://oxc.rs/docs/guide/usage/linter.html) |
+| Oxfmt              | [`.oxfmtrc.json`](./.oxfmtrc.json) | [docs](https://oxc.rs/docs/guide/usage/formatter.html), [website](https://oxc.rs) |
+| Oxlint             | [`.oxlintrc.json`](./.oxlintrc.json) | [docs](https://oxc.rs/docs/guide/usage/linter.html), [website](https://oxc.rs) |
 | tsdown             | [`packages/*/tsdown.config.ts`](packages/pkg1/tsdown.config.ts) | [docs](https://tsdown.dev/options/config-file), [website](https://tsdown.dev) |
 | Vite               | [`packages/*/vite.config.ts`](packages/pkg1/vite.config.ts) | [docs](https://vitejs.dev/config/), [website](https://vitejs.dev/) |
 | Vitest             | [`vitest.config.ts`](./vitest.config.ts), [`packages/*/vite.config.ts`](packages/pkg1/vite.config.ts) (`test`) | [docs](https://vitest.dev/config/), [website](https://vitest.dev/) |

package-lock.json

···
 			"workspaces": [
 				"packages/**"
 			],
+			"dependencies": {
+				"oxfmt": "^0.14.0"
+			},
 			"devDependencies": {
 				"@types/node": "^24.10.0",
 				"@vitest/coverage-v8": "^4.0.8",
···
 			"funding": {
 				"url": "https://github.com/sponsors/Boshen"
 			}
+		},
+		"node_modules/@oxfmt/darwin-arm64": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/darwin-arm64/-/darwin-arm64-0.14.0.tgz",
+			"integrity": "sha512-g8FANFTuzEcB2KLsE2IcQYXjdgDi8x9GUf8c4t7iyFD7oj0HGucKHhoMz3XsRWTx8szBZoJJD+t4bzs4+AMFdQ==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"darwin"
+			]
+		},
+		"node_modules/@oxfmt/darwin-x64": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/darwin-x64/-/darwin-x64-0.14.0.tgz",
+			"integrity": "sha512-Hd/DI+a8PKhl33CmaR3eQdx2P4zpaeoUwjOJQd090cFEbEX9auoCo6+t4LLm/JlzgnRSnFq0EaZOWJVK3wDu8Q==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"darwin"
+			]
+		},
+		"node_modules/@oxfmt/linux-arm64-gnu": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/linux-arm64-gnu/-/linux-arm64-gnu-0.14.0.tgz",
+			"integrity": "sha512-JzMyMKuDY9UmxRRnHWFdzYIXYZ2SK2/RmJKhYS47lcRELQC64nzuFe0d5JkRnt7KIJoM7RdUmYqEr+UKdiZ5mg==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/@oxfmt/linux-arm64-musl": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/linux-arm64-musl/-/linux-arm64-musl-0.14.0.tgz",
+			"integrity": "sha512-sPLA+jvL5kArpnUpxlt6v/EZCGvIhe8Z6hnNuGUa4gdYfzVf2XhAK1jO6hrrjFMT+2cnkbqmxa5iuZqCT6Y5xg==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/@oxfmt/linux-x64-gnu": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/linux-x64-gnu/-/linux-x64-gnu-0.14.0.tgz",
+			"integrity": "sha512-2hWVwIBa756NHs3+19om1mQp2C4vnGhFGe75AmsRRlkLq1vttC1iuQoF6slQQTS6n0/d7o4Pg1wGY3kldY6Msw==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/@oxfmt/linux-x64-musl": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/linux-x64-musl/-/linux-x64-musl-0.14.0.tgz",
+			"integrity": "sha512-bk98BFY2wArfWTVJ+T0zTCqF1deFfcyzrJ0/zppupQDFVdKUTga2XeKY8S1ImdyG+N7XcixdCrcT9db+SVNKMA==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/@oxfmt/win32-arm64": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/win32-arm64/-/win32-arm64-0.14.0.tgz",
+			"integrity": "sha512-UxctetV+XOXGXYcJp8uwP+/cUq3GSTAxq6UBbeGUq+0j1je3zC4XCQ6Kh/dm6kxOnAzrmMkX1uG4Su4bwvMq8w==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			]
+		},
+		"node_modules/@oxfmt/win32-x64": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@oxfmt/win32-x64/-/win32-x64-0.14.0.tgz",
+			"integrity": "sha512-P/Cw1aP0UIf42HDH6t3+5IY0xx8e4HxCfDHQz/PDbJ+Vc2JhAB6rzkVFAOEo9inQsXoZVdApF/xklp4NJtrkqQ==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			]
 		},
 		"node_modules/@oxlint/darwin-arm64": {
 			"version": "1.26.0",
···
 			},
 			"engines": {
 				"node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+			}
+		},
+		"node_modules/oxfmt": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/oxfmt/-/oxfmt-0.14.0.tgz",
+			"integrity": "sha512-cZpXmiiEIHxEWq1bkqgCM/9vMv4TQ8RCSA9l+5PPEuCewL+2qNP/7vZynIrQnByvUnJc/G3YOj95XH+GXYLaKg==",
+			"license": "MIT",
+			"bin": {
+				"oxfmt": "bin/oxfmt"
+			},
+			"engines": {
+				"node": "^20.19.0 || >=22.12.0"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/Boshen"
+			},
+			"optionalDependencies": {
+				"@oxfmt/darwin-arm64": "0.14.0",
+				"@oxfmt/darwin-x64": "0.14.0",
+				"@oxfmt/linux-arm64-gnu": "0.14.0",
+				"@oxfmt/linux-arm64-musl": "0.14.0",
+				"@oxfmt/linux-x64-gnu": "0.14.0",
+				"@oxfmt/linux-x64-musl": "0.14.0",
+				"@oxfmt/win32-arm64": "0.14.0",
+				"@oxfmt/win32-x64": "0.14.0"
 			}
 		},
 		"node_modules/oxlint": {

package.json

···
 		"test-ui": "vitest --ui --coverage",
 		"test-html": "vitest run --reporter=html --coverage.clean; vite preview --outDir ./dist/vitest/report",
 		"test-json": "vitest run --reporter=json --coverage.clean",
+		"fmt": "oxfmt",
+		"fmt-ci": "oxfmt --check",
 		"lint": "oxlint",
 		"fix": "oxlint --fix"
 	},
···
 		"typescript": "^5.9.3",
 		"vite": "npm:rolldown-vite@^7.1.17",
 		"vitest": "^4.0.8"
+	},
+	"dependencies": {
+		"oxfmt": "^0.14.0"
 	}
 }

packages/pkg1/package.json

···
 	"scripts": {
 		"build": "tsdown",
 		"dev": "tsdown --watch",
-		"test": "vitest"
+		"test": "vitest",
+		"fmt": "oxfmt --config=./../../.oxfmtrc.json",
+		"fmt-check": "npm run fmt -- --check",
+		"lint": "oxlint --config=./../../.oxlintrc.json",
+		"fix": "npm run lint -- --fix"
 	}
 }

vitest.config.ts

···
 			html: 'dist/vitest/report/index.html',
 			json: 'dist/vitest/report/index.json',
 			clover: 'dist/vitest/report/index.xml',
-		}
+		},
 	},
 })