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.eslintrc.cjs
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.eslintrc.cjs
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// Copyright 2021-2024 The Connect Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
module.exports = {
env: {
browser: true,
es2021: true,
node: true,
},
root: true,
ignorePatterns: [
"packages/*/dist/**",
// Our ESLint setup assumes all `.js` files are ESM, however these particular assets are CommonJS.
// Since for these files we cannot use `.cjs`, instead we override here to avoid having to override in each file
"packages/connect/*.js",
//
"packages/connect-web-bench/src/gen/grpcweb/**/*",
],
plugins: ["@typescript-eslint", "n", "import"],
// Rules and settings that do not require a non-default parser
extends: ["eslint:recommended"],
rules: {
"no-console": "error",
"import/no-cycle": "error",
"import/no-duplicates": "error",
},
overrides: [
{
files: ["**/*.{ts,tsx,cts,mts}"],
parser: "@typescript-eslint/parser",
parserOptions: {
project: true,
},
settings: {
"import/resolver": {
typescript: {
project: "tsconfig.json",
},
},
},
extends: [
"plugin:@typescript-eslint/recommended",
"plugin:@typescript-eslint/recommended-requiring-type-checking",
"plugin:import/recommended",
"plugin:import/typescript",
],
rules: {
"@typescript-eslint/strict-boolean-expressions": "error",
"@typescript-eslint/no-unnecessary-condition": "error",
"@typescript-eslint/array-type": "off", // we use complex typings, where Array is actually more readable than T[]
"@typescript-eslint/switch-exhaustiveness-check": "error",
"@typescript-eslint/prefer-nullish-coalescing": "error",
"@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
"@typescript-eslint/no-invalid-void-type": "error",
"@typescript-eslint/no-base-to-string": "error",
"import/no-cycle": "error",
"import/no-duplicates": "error",
},
},
// For scripts and configurations, use Node.js rules
{
files: ["**/*.{js,mjs,cjs}"],
parserOptions: {
ecmaVersion: 13, // ES2022 - https://eslint.org/docs/latest/use/configure/language-options#specifying-environments
},
extends: ["eslint:recommended", "plugin:n/recommended"],
rules: {
"n/hashbang": "off", // this rule reports _any_ hashbang outside of an npm binary as an error
"n/prefer-global/process": "off",
"n/no-process-exit": "off",
"n/exports-style": ["error", "module.exports"],
"n/file-extension-in-import": ["error", "always"],
"n/prefer-global/buffer": ["error", "always"],
"n/prefer-global/console": ["error", "always"],
"n/prefer-global/url-search-params": ["error", "always"],
"n/prefer-global/url": ["error", "always"],
"n/prefer-promises/dns": "error",
"n/prefer-promises/fs": "error",
"n/no-unsupported-features/node-builtins": "error",
"n/no-unsupported-features/es-syntax": "error",
},
},
],
};