{

"root": true,

"parser": "@babel/eslint-parser",

"plugins": ["react", "react-hooks", "jest", "import"],

"env": {

"browser": true,

"commonjs": true,

"es6": true,

"node": true

},

"parserOptions": {

"requireConfigFile": false,

"sourceType": "module",

"ecmaFeatures": {

"jsx": true

},

"babelOptions": {

"presets": ["next/babel"],

"caller": {

// Eslint supports top level await when a parser for it is included. We enable the parser by default for Babel.

"supportsTopLevelAwait": true

}

}

},

"settings": {

"react": {

"version": "detect"

},

"import/internal-regex": "^next/"

},

"overrides": [

{

"files": ["test/**/*.js", "test/**/*.ts", "**/*.test.ts"],

"extends": ["plugin:jest/recommended"],

"rules": {

"jest/expect-expect": "off",

"jest/no-disabled-tests": "off",

"jest/no-conditional-expect": "off",

"jest/valid-title": "off",

"jest/no-interpolation-in-snapshots": "off",

"jest/no-export": "off"

}

},

{ "files": ["**/__tests__/**"], "env": { "jest": true } },

{

"files": ["**/*.ts", "**/*.tsx"],

"parser": "@typescript-eslint/parser",

"parserOptions": {

"ecmaVersion": 2018,

"sourceType": "module",

"ecmaFeatures": {

"jsx": true

},

"warnOnUnsupportedTypeScriptVersion": false

},

"plugins": ["@typescript-eslint"],

"rules": {

// Already handled by TS

"no-dupe-class-members": "off",

"no-undef": "off",

// Add TypeScript specific rules (and turn off ESLint equivalents)

"@typescript-eslint/consistent-type-assertions": "warn",

"no-array-constructor": "off",

"@typescript-eslint/no-array-constructor": "warn",

"@typescript-eslint/no-namespace": "error",

"no-use-before-define": "off",

"@typescript-eslint/no-use-before-define": [

"warn",

{

"functions": true,

"classes": true,

"variables": true,

"enums": true,

"typedefs": true

}

],

"no-unused-vars": "off",

"@typescript-eslint/no-unused-vars": [

"warn",

{

"args": "none",

"ignoreRestSiblings": true

}

],

"no-unused-expressions": "off",

"@typescript-eslint/no-unused-expressions": [

"error",

{

"allowShortCircuit": true,

"allowTernary": true,

"allowTaggedTemplates": true

}

],

"no-useless-constructor": "off",

"@typescript-eslint/no-useless-constructor": "warn",

"@typescript-eslint/prefer-literal-enum-member": "error",

"@typescript-eslint/prefer-namespace-keyword": "error"

}

},

{

"files": [

"test/**/*",

"examples/**/*",

"packages/create-next-app/templates/**/*"

],

"rules": { "react/react-in-jsx-scope": "off" }

},

{

"files": ["examples/**/*"],

"rules": {

"@typescript-eslint/no-use-before-define": [

"error",

{

"functions": true,

"classes": true,

"variables": true,

"enums": true,

"typedefs": true

}

],

"import/no-anonymous-default-export": [

"error",

{

// React components:

"allowArrowFunction": false,

"allowAnonymousClass": false,

"allowAnonymousFunction": false,

// Non-React stuff:

"allowArray": true,

"allowCallExpression": true,

"allowLiteral": true,

"allowObject": true

}

]

}

},

{

"files": ["packages/**"],

"rules": {

"no-shadow": ["warn", { "builtinGlobals": false }],

"import/no-extraneous-dependencies": [

"error",

{ "devDependencies": false }

]

}

},

{

"files": ["packages/**/*.tsx", "packages/**/*.ts"],

"rules": {

"@typescript-eslint/no-unused-vars": [

"warn",

{

"args": "all",

"argsIgnorePattern": "^_",

"ignoreRestSiblings": true

}

]

}

},

{

"files": [

"packages/eslint-plugin-next/**/*.js",

"test/unit/eslint-plugin-next/**/*.test.ts"

],

"extends": ["plugin:eslint-plugin/recommended"],

"parserOptions": {

"sourceType": "script"

},

"rules": {

"eslint-plugin/prefer-replace-text": "error",

"eslint-plugin/report-message-format": [

"error",

".+\\. See: https://nextjs.org/docs/messages/[a-z\\-]+$"

],

"eslint-plugin/require-meta-docs-description": [

"error",

{

"pattern": ".+"

}

],

"eslint-plugin/require-meta-docs-url": "error"

}

}

],

"rules": {

"array-callback-return": "warn",

"default-case": ["warn", { "commentPattern": "^no default$" }],

"dot-location": ["warn", "property"],

"eqeqeq": ["warn", "smart"],

"new-parens": "warn",

"no-array-constructor": "warn",

"no-caller": "warn",

"no-cond-assign": ["warn", "except-parens"],

"no-const-assign": "warn",

"no-control-regex": "warn",

"no-delete-var": "warn",

"no-dupe-args": "warn",

"no-dupe-class-members": "warn",

"no-dupe-keys": "warn",

"no-duplicate-case": "warn",

"no-empty-character-class": "warn",

"no-empty-pattern": "warn",

"no-eval": "warn",

"no-ex-assign": "warn",

"no-extend-native": "warn",

"no-extra-bind": "warn",

"no-extra-label": "warn",

"no-fallthrough": "warn",

"no-func-assign": "warn",

"no-implied-eval": "warn",

"no-invalid-regexp": "warn",

"no-iterator": "warn",

"no-label-var": "warn",

"no-labels": ["warn", { "allowLoop": true, "allowSwitch": false }],

"no-lone-blocks": "warn",

"no-loop-func": "warn",

"no-mixed-operators": [

"warn",

{

"groups": [

["&", "|", "^", "~", "<<", ">>", ">>>"],

["==", "!=", "===", "!==", ">", ">=", "<", "<="],

["&&", "||"],

["in", "instanceof"]

],

"allowSamePrecedence": false

}

],

"no-multi-str": "warn",

"no-native-reassign": "warn",

"no-negated-in-lhs": "warn",

"no-new-func": "warn",

"no-new-object": "warn",

"no-new-symbol": "warn",

"no-new-wrappers": "warn",

"no-obj-calls": "warn",

"no-octal": "warn",

"no-octal-escape": "warn",

"no-redeclare": ["warn", { "builtinGlobals": false }],

"no-regex-spaces": "warn",

"no-restricted-syntax": [

"warn",

"WithStatement",

{

"message": "substr() is deprecated, use slice() or substring() instead",

"selector": "MemberExpression > Identifier[name='substr']"

}

],

"no-script-url": "warn",

"no-self-assign": "warn",

"no-self-compare": "warn",

"no-sequences": "warn",

"no-shadow-restricted-names": "warn",

"no-sparse-arrays": "warn",

"no-template-curly-in-string": "error",

"no-this-before-super": "warn",

"no-throw-literal": "warn",

"no-undef": "error",

"no-unexpected-multiline": "warn",

"no-unreachable": "warn",

"no-unused-expressions": [

"error",

{

"allowShortCircuit": true,

"allowTernary": true,

"allowTaggedTemplates": true

}

],

"no-unused-labels": "warn",

"no-unused-vars": [

"warn",

{

"args": "none",

"ignoreRestSiblings": true

}

],

"no-use-before-define": [

"warn",

{

"functions": false,

"classes": false,

"variables": false

}

],

"no-useless-computed-key": "warn",

"no-useless-concat": "warn",

"no-useless-constructor": "warn",

"no-useless-escape": "warn",

"no-useless-rename": [

"warn",

{

"ignoreDestructuring": false,

"ignoreImport": false,

"ignoreExport": false

}

],

"no-with": "warn",

"no-whitespace-before-property": "warn",

"react-hooks/exhaustive-deps": "warn",

"require-yield": "warn",

"rest-spread-spacing": ["warn", "never"],

"strict": ["warn", "never"],

"unicode-bom": ["warn", "never"],

"use-isnan": "warn",

"valid-typeof": "warn",

"getter-return": "warn",

"react/forbid-foreign-prop-types": ["warn", { "allowInPropTypes": true }],

"react/jsx-no-comment-textnodes": "warn",

"react/jsx-no-duplicate-props": "warn",

"react/jsx-no-target-blank": "warn",

"react/jsx-no-undef": "error",

"react/jsx-pascal-case": [

"warn",

{

"allowAllCaps": true,

"ignore": []

}

],

"react/jsx-uses-react": "warn",

"react/jsx-uses-vars": "warn",

"react/no-danger-with-children": "warn",

"react/no-deprecated": "warn",

"react/no-direct-mutation-state": "warn",

"react/no-is-mounted": "warn",

"react/no-typos": "error",

"react/react-in-jsx-scope": "error",

"react/require-render-return": "error",

"react/style-prop-object": "warn",

"react-hooks/rules-of-hooks": "error",

// "@typescript-eslint/non-nullable-type-assertion-style": "warn",

"@typescript-eslint/prefer-as-const": "warn"

}

}