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chromium / chromium / src / e144fb2ba52826e17c697d8eebb70cdfe66272b7 / . / .eslintrc.js
blob: 169b010f4346af94cc12b6f34684fe1bb4301d2a [file] [log] [blame]
Avi Drissman24976592022-09-12 15:24:31[diff] [blame]1// Copyright 2017 The Chromium Authors
dpapadff82d512017-05-25 18:40:15[diff] [blame]2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5module.exports = {
6 'root': true,
7 'env': {
8 'browser': true,
dpapada06173092020-10-17 03:06:16[diff] [blame]9 'es2020': true,
Christopher Lama5f2ad02018-12-05 10:05:58[diff] [blame]10 },
11 'parserOptions': {
dpapada06173092020-10-17 03:06:16[diff] [blame]12 'ecmaVersion': 2020,
dpapad12b3c472019-05-29 02:16:05[diff] [blame]13 'sourceType': 'module',
dpapadff82d512017-05-25 18:40:15[diff] [blame]14 },
15 'rules': {
16 // Enabled checks.
Dan Beam1a0d9dcb2019-01-08 09:05:35[diff] [blame]17 'brace-style': ['error', '1tbs'],
dpapadf4d855722022-07-19 01:28:18[diff] [blame]18
19 // https://google.github.io/styleguide/jsguide.html#features-arrays-trailing-comma
20 // https://google.github.io/styleguide/jsguide.html#features-objects-use-trailing-comma
21 'comma-dangle': ['error', 'always-multiline'],
22
Dan Beam1a0d9dcb2019-01-08 09:05:35[diff] [blame]23 'curly': ['error', 'multi-line', 'consistent'],
dpapadc21c6fb2022-04-01 07:12:13[diff] [blame]24 'new-parens': 'error',
dpapadb2b0d6c2022-06-27 19:45:11[diff] [blame]25 'no-array-constructor': 'error',
dpapadc7570be2022-03-28 08:28:23[diff] [blame]26 'no-console': ['error', {allow: ['info', 'warn', 'error', 'assert']}],
Dan Beamb1536652019-02-26 07:36:25[diff] [blame]27 'no-extra-boolean-cast': 'error',
dpapadff82d512017-05-25 18:40:15[diff] [blame]28 'no-extra-semi': 'error',
dpapad728cff02017-06-01 01:06:42[diff] [blame]29 'no-new-wrappers': 'error',
dpapadd6fe5df2023-04-11 16:55:13[diff] [blame]30 'no-restricted-imports': ['error', {
31 'paths': [{
32 'name': 'chrome://resources/polymer/v3_0/polymer/polymer_bundled.min.js',
33 'importNames': ['Polymer'],
34 'message': 'Use PolymerElement instead.',
35 },
36 {
37 'name': '//resources/polymer/v3_0/polymer/polymer_bundled.min.js',
38 'importNames': ['Polymer'],
39 'message': 'Use PolymerElement instead.',
40 }],
41 }],
Christopher Lama5f2ad02018-12-05 10:05:58[diff] [blame]42 'no-restricted-properties': [
43 'error',
44 {
dpapad7b493a42019-06-22 02:07:09[diff] [blame]45 'property': '__lookupGetter__',
46 'message': 'Use Object.getOwnPropertyDescriptor',
47 },
48 {
49 'property': '__lookupSetter__',
50 'message': 'Use Object.getOwnPropertyDescriptor',
51 },
52 {
53 'property': '__defineGetter__',
54 'message': 'Use Object.defineProperty',
55 },
56 {
57 'property': '__defineSetter__',
58 'message': 'Use Object.defineProperty',
59 },
Dan Beam1aa00a122020-01-16 00:40:41[diff] [blame]60 {
61 'object': 'cr',
62 'property': 'exportPath',
63 'message': 'Use ES modules or cr.define() instead',
64 },
dpapad2674f9282017-05-31 19:40:39[diff] [blame]65 ],
dpapadb9eb38f12023-11-06 21:42:06[diff] [blame]66 'no-restricted-syntax': ['error', {
67 'selector': 'CallExpression[callee.object.name=JSON][callee.property.name=parse] > CallExpression[callee.object.name=JSON][callee.property.name=stringify]',
68 'message': 'Don\'t use JSON.parse(JSON.stringify(...)) to clone objects. Use structuredClone() instead.',
69 }],
dpapadbea253c32022-04-01 08:52:57[diff] [blame]70 'no-throw-literal': 'error',
dpapad2d023f92022-03-29 21:11:23[diff] [blame]71 'no-trailing-spaces': 'error',
Demetrios Papadopouloscf870bde2019-11-26 19:14:34[diff] [blame]72 'no-var': 'error',
73 'prefer-const': 'error',
dpapadab656922022-04-01 00:01:11[diff] [blame]74 'quotes': ['error', 'single', {allowTemplateLiterals: true}],
dpapad1e511b12017-05-31 03:31:26[diff] [blame]75 'semi': ['error', 'always'],
dpapad2674f9282017-05-31 19:40:39[diff] [blame]76
dpapadd631d172022-07-20 17:29:01[diff] [blame]77 // https://google.github.io/styleguide/jsguide.html#features-one-variable-per-declaration
78 'one-var': ['error', {
79 let: 'never',
80 const: 'never',
81 }],
82
dpapadff82d512017-05-25 18:40:15[diff] [blame]83 // TODO(dpapad): Add more checks according to our styleguide.
84 },
dpapadac97d7b62021-06-14 07:20:26[diff] [blame]85
86 'overrides': [{
87 'files': ['**/*.ts'],
dpapad1c17e502023-10-04 20:31:12[diff] [blame]88 'parser': './third_party/node/node_modules/@typescript-eslint/parser/dist/index.js',
dpapadfa76653e2022-02-24 09:08:40[diff] [blame]89 'plugins': [
90 '@typescript-eslint',
91 ],
92 'rules': {
93 'no-unused-vars': 'off',
94 '@typescript-eslint/no-unused-vars': [
95 'error', {
96 argsIgnorePattern: '^_',
97 varsIgnorePattern: '^_',
98 }
dpapad5df23042022-03-21 19:22:37[diff] [blame]99 ],
100
dpapad39be89f62023-10-10 20:35:05[diff] [blame]101 // https://google.github.io/styleguide/tsguide.html#array-constructor
102 // Note: The rule below only partially enforces the styleguide, since it
103 // it does not flag invocations of the constructor with a single
104 // parameter.
105 'no-array-constructor': 'off',
106 '@typescript-eslint/no-array-constructor': 'error',
107
108 // https://google.github.io/styleguide/tsguide.html#automatic-semicolon-insertion
dpapad5df23042022-03-21 19:22:37[diff] [blame]109 'semi': 'off',
110 '@typescript-eslint/semi': ['error'],
dpapada2eca912022-03-28 09:36:44[diff] [blame]111
dpapad09279162022-07-07 18:34:06[diff] [blame]112 // https://google.github.io/styleguide/tsguide.html#arrayt-type
113 '@typescript-eslint/array-type': ['error', {
114 default: 'array-simple',
115 }],
116
dpapadd5332792022-07-11 21:15:14[diff] [blame]117 // https://google.github.io/styleguide/tsguide.html#type-assertions-syntax
118 '@typescript-eslint/consistent-type-assertions': ['error', {
119 assertionStyle: 'as',
120 }],
121
dpapadb1a935f2022-07-27 16:49:06[diff] [blame]122 // https://google.github.io/styleguide/tsguide.html#interfaces-vs-type-aliases
dpapaddc88a092023-10-04 00:19:04[diff] [blame]123 '@typescript-eslint/consistent-type-definitions': ['error', 'interface'],
124
125 // https://google.github.io/styleguide/tsguide.html#visibility
126 '@typescript-eslint/explicit-member-accessibility': ['error', {
127 accessibility: 'no-public',
128 overrides: {
129 parameterProperties: 'off',
130 },
131 }],
dpapadb1a935f2022-07-27 16:49:06[diff] [blame]132
dpapad684f427b2022-05-10 05:47:02[diff] [blame]133 // https://google.github.io/styleguide/jsguide.html#naming
dpapad50adcde2022-05-07 00:05:52[diff] [blame]134 '@typescript-eslint/naming-convention': [
135 'error',
136 {
dpapad684f427b2022-05-10 05:47:02[diff] [blame]137 selector: ['class', 'interface', 'typeAlias', 'enum', 'typeParameter'],
dpapad978c1da2022-10-19 18:12:09[diff] [blame]138 format: ['StrictPascalCase'],
139 filter: {
140 regex: '^(' +
141 // Exclude TypeScript defined interfaces HTMLElementTagNameMap
142 // and HTMLElementEventMap.
143 'HTMLElementTagNameMap|HTMLElementEventMap|' +
144 // Exclude native DOM types which are always named like HTML<Foo>Element.
145 'HTML[A-Za-z]{0,}Element|' +
146 // Exclude native DOM interfaces.
147 'UIEvent|UIEventInit|DOMError|' +
148 // Exclude the deprecated WebUIListenerBehavior interface.
149 'WebUIListenerBehavior)$',
150 match: false,
151 },
dpapad50adcde2022-05-07 00:05:52[diff] [blame]152 },
153 {
dpapad50adcde2022-05-07 00:05:52[diff] [blame]154 selector: 'enumMember',
155 format: ['UPPER_CASE'],
156 },
dpapad684f427b2022-05-10 05:47:02[diff] [blame]157 {
158 selector: 'classMethod',
dpapade9ae77d2022-12-12 17:02:00[diff] [blame]159 format: ['strictCamelCase'],
dpapadb7286e82022-06-16 01:33:27[diff] [blame]160 modifiers: ['public'],
161 },
162 {
163 selector: 'classMethod',
dpapade9ae77d2022-12-12 17:02:00[diff] [blame]164 format: ['strictCamelCase'],
dpapadb7286e82022-06-16 01:33:27[diff] [blame]165 modifiers: ['private'],
dpapad684f427b2022-05-10 05:47:02[diff] [blame]166 trailingUnderscore: 'allow',
dpapadd5da00a92023-05-26 17:58:23[diff] [blame]167
168 // Disallow the 'Tap_' suffix, in favor of 'Click_' in event handlers.
169 // Note: Unfortunately this ESLint rule does not provide a way to
170 // customize the error message to better inform developers.
171 custom: {
172 regex: '^on[a-zA-Z0-9]+Tap$',
173 match: false,
174 },
dpapad684f427b2022-05-10 05:47:02[diff] [blame]175 },
176 {
dpapade9d1fa72022-06-09 17:42:50[diff] [blame]177 selector: 'classProperty',
178 format: ['UPPER_CASE'],
dpapad588bb912022-06-15 05:35:33[diff] [blame]179 modifiers: ['private', 'static', 'readonly'],
180 },
181 {
182 selector: 'classProperty',
183 format: ['UPPER_CASE'],
184 modifiers: ['public', 'static', 'readonly'],
dpapade9d1fa72022-06-09 17:42:50[diff] [blame]185 },
186 {
187 selector: 'classProperty',
188 format: ['camelCase'],
dpapad588bb912022-06-15 05:35:33[diff] [blame]189 modifiers: ['public'],
190 },
191 {
192 selector: 'classProperty',
193 format: ['camelCase'],
194 modifiers: ['private'],
dpapade9d1fa72022-06-09 17:42:50[diff] [blame]195 trailingUnderscore: 'allow',
196 },
197 {
dpapad684f427b2022-05-10 05:47:02[diff] [blame]198 selector: 'parameter',
199 format: ['camelCase'],
200 leadingUnderscore: 'allow',
201 },
dpapadb17f3beb2022-05-10 21:34:13[diff] [blame]202 {
203 selector: 'function',
204 format: ['camelCase'],
205 },
dpapad50adcde2022-05-07 00:05:52[diff] [blame]206 ],
207
dpapad39be89f62023-10-10 20:35:05[diff] [blame]208 // https://google.github.io/styleguide/tsguide.html#member-property-declarations
dpapada2eca912022-03-28 09:36:44[diff] [blame]209 '@typescript-eslint/member-delimiter-style': ['error', {
210 multiline: {
211 delimiter: 'comma',
212 requireLast: true,
213 },
214 singleline: {
215 delimiter: 'comma',
216 requireLast: false,
217 },
218 overrides: {
219 interface: {
220 multiline: {
221 delimiter: 'semi',
222 requireLast: true,
223 },
224 singleline: {
225 delimiter: 'semi',
226 requireLast: false,
227 },
228 },
229 },
dpapadb5aaf1a2022-07-11 18:00:41[diff] [blame]230 }],
231
232 // https://google.github.io/styleguide/tsguide.html#wrapper-types
233 '@typescript-eslint/ban-types': ['error', {
234 extendDefaults: false,
235 types: {
236 String: {
237 message: 'Use string instead',
238 fixWith: 'string',
239 },
240 Boolean: {
241 message: 'Use boolean instead',
242 fixWith: 'boolean',
243 },
244 Number: {
245 message: 'Use number instead',
246 fixWith: 'number',
247 },
248 Symbol: {
249 message: 'Use symbol instead',
250 fixWith: 'symbol',
251 },
252 BigInt: {
253 message: 'Use bigint instead',
254 fixWith: 'bigint',
255 },
256 }
257 }],
dpapadfa76653e2022-02-24 09:08:40[diff] [blame]258 }
dpapadac97d7b62021-06-14 07:20:26[diff] [blame]259 }]
dpapadff82d512017-05-25 18:40:15[diff] [blame]260};