build: use biome as formatter

.eslintrc.js

@@ -133,11 +133,7 @@ module.exports = {
     // https://eslint.org/docs/rules/
     'accessor-pairs': 'error',
     'array-callback-return': 'error',
-    'arrow-parens': 'error',
-    'arrow-spacing': 'error',
     'block-scoped-var': 'error',
-    'block-spacing': 'error',
-    'brace-style': ['error', '1tbs', { allowSingleLine: true }],
     'capitalized-comments': ['error', 'always', {
       line: {
         // Ignore all lines that have less characters than 20 and all lines that
@@ -150,49 +146,20 @@ module.exports = {
         ignorePattern: '.*',
       },
     }],
-    'comma-dangle': ['error', 'always-multiline'],
-    'comma-spacing': 'error',
-    'comma-style': 'error',
-    'computed-property-spacing': 'error',
     'default-case-last': 'error',
-    'dot-location': ['error', 'property'],
     'dot-notation': 'error',
     'eol-last': 'error',
     'eqeqeq': ['error', 'smart'],
     'func-call-spacing': 'error',
     'func-name-matching': 'error',
     'func-style': ['error', 'declaration', { allowArrowFunctions: true }],
-    'indent': ['error', 2, {
-      ArrayExpression: 'first',
-      CallExpression: { arguments: 'first' },
-      FunctionDeclaration: { parameters: 'first' },
-      FunctionExpression: { parameters: 'first' },
-      MemberExpression: 'off',
-      ObjectExpression: 'first',
-      SwitchCase: 1,
-    }],
-    'key-spacing': 'error',
-    'keyword-spacing': 'error',
     'linebreak-style': 'error',
-    'max-len': ['error', {
-      code: 120,
-      ignorePattern: '^// Flags:',
-      ignoreRegExpLiterals: true,
-      ignoreTemplateLiterals: true,
-      ignoreUrls: true,
-      tabWidth: 2,
-    }],
-    'new-parens': 'error',
-    'no-confusing-arrow': 'error',
     'no-constant-condition': ['error', { checkLoops: false }],
     'no-constructor-return': 'error',
     'no-duplicate-imports': 'error',
     'no-else-return': 'error',
-    'no-extra-parens': ['error', 'functions'],
     'no-lonely-if': 'error',
     'no-mixed-requires': 'error',
-    'no-multi-spaces': ['error', { ignoreEOLComments: true }],
-    'no-multiple-empty-lines': ['error', { max: 2, maxEOF: 0, maxBOF: 0 }],
     'no-new-require': 'error',
     'no-path-concat': 'error',
     'no-proto': 'error',
@@ -257,10 +224,8 @@ module.exports = {
       },
     ],
     'no-self-compare': 'error',
-    'no-tabs': 'error',
     'no-template-curly-in-string': 'error',
     'no-throw-literal': 'error',
-    'no-trailing-spaces': 'error',
     'no-undef': ['error', { typeof: true }],
     'no-undef-init': 'error',
     'no-unused-expressions': ['error', { allowShortCircuit: true }],
@@ -276,39 +241,11 @@ module.exports = {
     'no-useless-return': 'error',
     'no-var': 'error',
     'no-void': 'error',
-    'no-whitespace-before-property': 'error',
-    'object-curly-newline': 'error',
-    'object-curly-spacing': ['error', 'always'],
     'one-var': ['error', { initialized: 'never' }],
-    'one-var-declaration-per-line': 'error',
-    'operator-linebreak': ['error', 'after'],
-    'padding-line-between-statements': [
-      'error',
-      { blankLine: 'always', prev: 'function', next: 'function' },
-    ],
     'prefer-const': ['error', { ignoreReadBeforeAssign: true }],
     'prefer-object-has-own': 'error',
-    'quotes': ['error', 'single', { avoidEscape: true }],
-    'quote-props': ['error', 'consistent'],
-    'rest-spread-spacing': 'error',
-    'semi': 'error',
-    'semi-spacing': 'error',
-    'space-before-blocks': ['error', 'always'],
-    'space-before-function-paren': ['error', {
-      anonymous: 'never',
-      named: 'never',
-      asyncArrow: 'always',
-    }],
-    'space-in-parens': 'error',
-    'space-infix-ops': 'error',
-    'space-unary-ops': 'error',
-    'spaced-comment': ['error', 'always', {
-      'block': { 'balanced': true },
-      'exceptions': ['-'],
-    }],
     'strict': ['error', 'global'],
     'symbol-description': 'error',
-    'template-curly-spacing': 'error',
     'unicode-bom': 'error',
     'valid-typeof': ['error', { requireStringLiterals: true }],
 

.github/workflows/linters.yml

@@ -114,6 +114,30 @@ jobs:
           NODE=$(command -v node) make lint-md
         env:
           NODE_RELEASED_VERSIONS: ${{ steps.get-released-versions.outputs.NODE_RELEASED_VERSIONS }}
+  format-js:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11  # v4.1.1
+        with:
+          persist-credentials: false
+      - name: Use Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65  # v4.0.0
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+      - name: Environment Information
+        run: npx envinfo
+      - name: Format JavaScript files
+        run: |
+          make format-js-build
+
+          BIOME_FORMAT_START="$(git merge-base HEAD refs/remotes/origin/$GITHUB_BASE_REF)"
+
+          tools/biome/node_modules/.bin/biome \
+            check . \
+            --changed \
+            --no-errors-on-unmatched \
+            --since="$BIOME_FORMAT_START"
   lint-py:
     if: github.event.pull_request.draft == false
     runs-on: ubuntu-latest

.github/workflows/tools.yml

@@ -17,6 +17,7 @@ on:
           - acorn-walk
           - ada
           - base64
+          - biome
           - brotli
           - c-ares
           - cjs-module-lexer
@@ -88,6 +89,14 @@ jobs:
               cat temp-output
               tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
               rm temp-output
+          - id: biome
+            subsystem: tools
+            label: tools
+            run: |
+              ./tools/dep_updaters/update-biome.sh > temp-output
+              cat temp-output
+              tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
+              rm temp-output
           - id: brotli
             subsystem: deps
             label: dependencies

.gitignore

@@ -115,6 +115,7 @@ tools/*/*.i.tmp
 /node_modules
 /tools/doc/node_modules
 /tools/clang-format/node_modules
+/tools/biome/node_modules
 
 # === Rules for test artifacts ===
 /*.tap

LICENSE

@@ -2024,6 +2024,31 @@ The externally maintained libraries used by Node.js are:
     THE SOFTWARE.
   """
 
+- biome, located at tools/biome/node_modules/@biomejs/biome, is licensed as follows:
+  """
+    MIT License
+
+    Copyright (c) 2023 Biome Developers and Contributors.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+  """
+
 - gtest, located at deps/googletest, is licensed as follows:
   """
     Copyright 2008, Google Inc.

Makefile

@@ -1450,6 +1450,40 @@ FORMAT_CPP_FILES += $(wildcard \
 # and the actual filename is generated so it won't match header guards
 ADDON_DOC_LINT_FLAGS=-whitespace/ending_newline,-build/header_guard
 
+.PHONY: format-js-build
+format-js-build:
+	cd tools/biome && $(call available-node,$(run-npm-ci))
+
+.PHONY: format-js-clean
+.NOTPARALLEL: format-js-clean
+format-js-clean:
+	$(RM) -r tools/biome/node_modules
+
+.PHONY: format-js
+format-js: ## Format JS files
+ifneq ("","$(wildcard tools/biome/node_modules/)")
+	tools/biome/node_modules/.bin/biome \
+		check . \
+		--apply \
+		--changed \
+		--no-errors-on-unmatched
+else
+	$(info Required tooling for JavaScript code formatting is not installed.)
+	$(info To install (requires internet access) run: $$ make format-js-build)
+endif
+
+.PHONY: format-js-check
+format-js-check: ## Format JS files
+ifneq ("","$(wildcard tools/biome/node_modules/)")
+	tools/biome/node_modules/.bin/biome \
+		check . \
+		--changed \
+		--no-errors-on-unmatched
+else
+	$(info Required tooling for JavaScript code formatting is not installed.)
+	$(info To install (requires internet access) run: $$ make format-js-build)
+endif
+
 .PHONY: format-cpp-build
 format-cpp-build:
 	cd tools/clang-format && $(call available-node,$(run-npm-ci))

biome.json

@@ -0,0 +1,45 @@
+{
+  "$schema": "./tools/biome/node_modules/@biomejs/biome/configuration_schema.json",
+  "vcs": {
+    "enabled": true,
+    "defaultBranch": "main",
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "ignoreUnknown": true,
+    "include": [],
+    "ignore": ["doc", "out", "benchmark", "typings", "test", "tools", "deps", ".eslintrc.js", "src"]
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 120,
+    "formatWithErrors": true,
+    "lineEnding": "lf"
+  },
+  "linter": {
+    "enabled": false
+  },
+  "organizeImports": {
+    "enabled": false
+  },
+  "javascript": {
+    "formatter": {
+      "enabled": true,
+      "arrowParentheses": "always",
+      "trailingComma": "all",
+      "quoteStyle": "single",
+      "semicolons": "always"
+    }
+  },
+  "json": {
+    "formatter": {
+      "enabled": true,
+      "indentWidth": 2,
+      "indentStyle": "space",
+      "lineEnding": "lf"
+    }
+  }
+}

test/common/dns.js

@@ -40,7 +40,6 @@ function readDomainFromPacket(buffer, offset) {
   }
   // Pointer to another part of the packet.
   assert.strictEqual(length & 0xC0, 0xC0);
-  // eslint-disable-next-line space-infix-ops, space-unary-ops
   const pointeeOffset = buffer.readUInt16BE(offset) &~ 0xC000;
   return {
     nread: 2,

test/parallel/test-assert.js

@@ -730,7 +730,7 @@ assert.throws(
     // before the assertion causes any wrong assertion message.
     // Therefore, don't reformat the following code.
     // Refs: https://github.com/nodejs/node/issues/30872
-    try { assert.ok(0);   // eslint-disable-line no-useless-catch, brace-style
+    try { assert.ok(0);   // eslint-disable-line no-useless-catch
     } catch (err) {
       throw err;
     }
@@ -767,7 +767,7 @@ assert.throws(
     // before the assertion causes any wrong assertion message.
     // Therefore, don't reformat the following code.
     // Refs: https://github.com/nodejs/node/issues/30872
-    function test() { assert.ok(0);     // eslint-disable-line brace-style
+    function test() { assert.ok(0);
     }
     test();
   },
@@ -804,7 +804,6 @@ assert.throws(
   () => {
     a(
       (() => 'string')()
-      // eslint-disable-next-line operator-linebreak
       ===
       123 instanceof
           Buffer
@@ -828,7 +827,6 @@ assert.throws(
   () => {
     a(
       (() => 'string')()
-      // eslint-disable-next-line operator-linebreak
       ===
   123 instanceof
           Buffer
@@ -848,7 +846,6 @@ assert.throws(
   }
 );
 
-/* eslint-disable indent */
 assert.throws(() => {
 a((
   () => 'string')() ===
@@ -866,7 +863,6 @@ Buffer
            '  )\n'
   }
 );
-/* eslint-enable indent */
 
 assert.throws(
   () => {
@@ -894,7 +890,7 @@ assert.throws(
 );
 
 assert.throws(
-  // eslint-disable-next-line dot-notation, quotes
+  // eslint-disable-next-line dot-notation
   () => assert['ok']["apply"](null, [0]),
   {
     code: 'ERR_ASSERTION',

test/parallel/test-internal-validators-validateoneof.js

@@ -10,7 +10,6 @@ const { validateOneOf } = require('internal/validators');
   const allowed = [2, 3];
   assert.throws(() => validateOneOf(1, 'name', allowed), {
     code: 'ERR_INVALID_ARG_VALUE',
-    // eslint-disable-next-line quotes
     message: `The argument 'name' must be one of: 2, 3. Received 1`
   });
 }
@@ -25,7 +24,6 @@ const { validateOneOf } = require('internal/validators');
   const allowed = ['b', 'c'];
   assert.throws(() => validateOneOf('a', 'name', allowed), {
     code: 'ERR_INVALID_ARG_VALUE',
-    // eslint-disable-next-line quotes
     message: `The argument 'name' must be one of: 'b', 'c'. Received 'a'`
   });
 }
@@ -40,7 +38,6 @@ const { validateOneOf } = require('internal/validators');
   const allowed = [Symbol.for('b'), Symbol.for('c')];
   assert.throws(() => validateOneOf(Symbol.for('a'), 'name', allowed), {
     code: 'ERR_INVALID_ARG_VALUE',
-    // eslint-disable-next-line quotes
     message: `The argument 'name' must be one of: Symbol(b), Symbol(c). ` +
       'Received Symbol(a)'
   });

test/parallel/test-policy-integrity-flag.js

@@ -21,12 +21,10 @@ const emptySRI = `sha512-${emptyHash.digest('base64')}`;
 const policyHash = crypto.createHash('sha512');
 policyHash.update(fs.readFileSync(depPolicy));
 
-/* eslint-disable max-len */
 // When using \n only
 const nixPolicySRI = 'sha512-u/nXI6UacK5fKDC2bopcgnuQY4JXJKlK3dESO3GIKKxwogVHjJqpF9rgk7Zw+TJXIc96xBUWKHuUgOzic8/4tQ==';
 // When \n is turned into \r\n
 const windowsPolicySRI = 'sha512-OeyCPRo4OZMosHyquZXDHpuU1F4KzG9UHFnn12FMaHsvqFUt3TFZ+7wmZE7ThZ5rsQWkUjc9ZH0knGZ2e8BYPQ==';
-/* eslint-enable max-len */
 
 const depPolicySRI = `${nixPolicySRI} ${windowsPolicySRI}`;
 {