Warning: React version not specified in eslint-plugin-react settings

[idahogurl]

I am using the airbnb configuration and "settings" => "react" => "version" is set to 16 in their configuration file.

Packages
"eslint": "^5.12.0",
"eslint-config-airbnb": "^17.1.0",
"eslint-plugin-import": "^2.14.0",
"eslint-plugin-jsx-a11y": "^6.1.2",
"eslint-plugin-react": "^7.12.3",

.eslintrc Configuration

{
  "root": true,
  "extends": "airbnb",
  "globals": {
    "window": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 2018,
    "ecmaFeatures": {
      "jsx": true,
      "modules": true
    }
  },
  "plugins": ["react"],
  "rules": {
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": false
      }
    ],
    "consistent-return": "off",
    "curly": ["error", "all"],
    "import/extensions": "off",
    "import/no-extraneous-dependencies": "off",
    "import/no-unresolved": "off",
    "import/prefer-default-export": "off",
    "import/no-mutable-exports": "off",
    "max-len": "off",
    "no-await-in-loop": "error",
    "no-compare-neg-zero": "error",
    "no-confusing-arrow": "off",
    "no-mixed-operators": "off",
    "no-multi-assign": "off",
    "no-plusplus": "off",
    "no-use-before-define": ["error", { "functions": false, "classes": true }],
    "nonblock-statement-body-position": "error",
    "operator-linebreak": [
      "error",
      "before",
      {
        "overrides": {
          "+=": "after",
          "=": "after"
        }
      }
    ],
    "prefer-arrow-callback": [
      "error",
      {
        "allowNamedFunctions": true,
        "allowUnboundThis": true
      }
    ],
    "prefer-destructuring": "off",
    "prefer-promise-reject-errors": "error",
    "react/jsx-sort-props": "off",
    "react/sort-comp": "off",
    "react/prop-types": ["error", { "skipUndeclared": true }],
    "react/forbid-prop-types": "off",
    "react/jsx-filename-extension": [
      "error",
      {
        "extensions": [".js", ".jsx"]
      }
    ],
    "react/no-array-index-key": "off",
    "react/no-danger": "off",
    "react/prefer-stateless-function": "off",
    "react/react-in-jsx-scope": "off",
    "react/require-default-props": "off",
    "template-tag-spacing": "error"
  },
  "overrides": [
    {
      "files": ["**/__tests__/**/*.js", "**/__mocks__/**/*.js"],
      "env": {
        "jest": true
      },

      "globals": {
        "page": true,
        "browser": true,
        "context": true,
        "jestPuppeteer": true
      }
    },
    {
      "files": [
        "autotest/**/**/*.js"
      ],
      "rules": {
        "no-underscore-dangle": "off"
      }
    },
    {
      "files": ["server/**"],
      "rules": {
        "no-restricted-syntax": [
          "error",
          "ForInStatement",
          "LabeledStatement",
          "WithStatement"
        ]
      }
    }
  ]
}

Expected: Warning should not show

Actual: Warning remains

[ljharb]

Indeed, I'd expect that to be set. What's the output of npx eslint --print-config path/to/some/JS/file?

[idahogurl]

{
  "globals": {
    "__dirname": false,
    "__filename": false,
    "Buffer": false,
    "clearImmediate": false,
    "clearInterval": false,
    "clearTimeout": false,
    "console": false,
    "exports": true,
    "global": false,
    "Intl": false,
    "module": false,
    "process": false,
    "require": false,
    "setImmediate": false,
    "setInterval": false,
    "setTimeout": false,
    "Array": false,
    "ArrayBuffer": false,
    "Boolean": false,
    "constructor": false,
    "DataView": false,
    "Date": false,
    "decodeURI": false,
    "decodeURIComponent": false,
    "encodeURI": false,
    "encodeURIComponent": false,
    "Error": false,
    "escape": false,
    "eval": false,
    "EvalError": false,
    "Float32Array": false,
    "Float64Array": false,
    "Function": false,
    "hasOwnProperty": false,
    "Infinity": false,
    "Int16Array": false,
    "Int32Array": false,
    "Int8Array": false,
    "isFinite": false,
    "isNaN": false,
    "isPrototypeOf": false,
    "JSON": false,
    "Map": false,
    "Math": false,
    "NaN": false,
    "Number": false,
    "Object": false,
    "parseFloat": false,
    "parseInt": false,
    "Promise": false,
    "propertyIsEnumerable": false,
    "Proxy": false,
    "RangeError": false,
    "ReferenceError": false,
    "Reflect": false,
    "RegExp": false,
    "Set": false,
    "String": false,
    "Symbol": false,
    "SyntaxError": false,
    "toLocaleString": false,
    "toString": false,
    "TypeError": false,
    "Uint16Array": false,
    "Uint32Array": false,
    "Uint8Array": false,
    "Uint8ClampedArray": false,
    "undefined": false,
    "unescape": false,
    "URIError": false,
    "valueOf": false,
    "WeakMap": false,
    "WeakSet": false,
    "window": true
  },
  "env": {
    "node": true,
    "es6": true
  },
  "rules": {
    "accessor-pairs": "off",
    "array-callback-return": [
      "error",
      {
        "allowImplicit": true
      }
    ],
    "block-scoped-var": "error",
    "complexity": [
      "off",
      11
    ],
    "class-methods-use-this": [
      "error",
      {
        "exceptMethods": [
          "render",
          "getInitialState",
          "getDefaultProps",
          "getChildContext",
          "componentWillMount",
          "UNSAFE_componentWillMount",
          "componentDidMount",
          "componentWillReceiveProps",
          "UNSAFE_componentWillReceiveProps",
          "shouldComponentUpdate",
          "componentWillUpdate",
          "UNSAFE_componentWillUpdate",
          "componentDidUpdate",
          "componentWillUnmount",
          "componentDidCatch",
          "getSnapshotBeforeUpdate"
        ]
      }
    ],
    "consistent-return": "off",
    "curly": [
      "error",
      "all"
    ],
    "default-case": [
      "error",
      {
        "commentPattern": "^no default$"
      }
    ],
    "dot-notation": [
      "error",
      {
        "allowKeywords": true
      }
    ],
    "dot-location": [
      "error",
      "property"
    ],
    "eqeqeq": [
      "error",
      "always",
      {
        "null": "ignore"
      }
    ],
    "guard-for-in": "error",
    "max-classes-per-file": [
      "off",
      1
    ],
    "no-alert": "warn",
    "no-caller": "error",
    "no-case-declarations": "error",
    "no-div-regex": "off",
    "no-else-return": [
      "error",
      {
        "allowElseIf": false
      }
    ],
    "no-empty-function": [
      "error",
      {
        "allow": [
          "arrowFunctions",
          "functions",
          "methods"
        ]
      }
    ],
    "no-empty-pattern": "error",
    "no-eq-null": "off",
    "no-eval": "error",
    "no-extend-native": "error",
    "no-extra-bind": "error",
    "no-extra-label": "error",
    "no-fallthrough": "error",
    "no-floating-decimal": "error",
    "no-global-assign": [
      "error",
      {
        "exceptions": []
      }
    ],
    "no-native-reassign": "off",
    "no-implicit-coercion": [
      "off",
      {
        "boolean": false,
        "number": true,
        "string": true,
        "allow": []
      }
    ],
    "no-implicit-globals": "off",
    "no-implied-eval": "error",
    "no-invalid-this": "off",
    "no-iterator": "error",
    "no-labels": [
      "error",
      {
        "allowLoop": false,
        "allowSwitch": false
      }
    ],
    "no-lone-blocks": "error",
    "no-loop-func": "error",
    "no-magic-numbers": [
      "off",
      {
        "ignore": [],
        "ignoreArrayIndexes": true,
        "enforceConst": true,
        "detectObjects": false
      }
    ],
    "no-multi-spaces": [
      "error",
      {
        "ignoreEOLComments": false
      }
    ],
    "no-multi-str": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-wrappers": "error",
    "no-octal": "error",
    "no-octal-escape": "error",
    "no-param-reassign": [
      "error",
      {
        "props": true,
        "ignorePropertyModificationsFor": [
          "acc",
          "accumulator",
          "e",
          "ctx",
          "req",
          "request",
          "res",
          "response",
          "$scope"
        ]
      }
    ],
    "no-proto": "error",
    "no-redeclare": "error",
    "no-restricted-properties": [
      "error",
      {
        "object": "arguments",
        "property": "callee",
        "message": "arguments.callee is deprecated"
      },
      {
        "object": "global",
        "property": "isFinite",
        "message": "Please use Number.isFinite instead"
      },
      {
        "object": "self",
        "property": "isFinite",
        "message": "Please use Number.isFinite instead"
      },
      {
        "object": "window",
        "property": "isFinite",
        "message": "Please use Number.isFinite instead"
      },
      {
        "object": "global",
        "property": "isNaN",
        "message": "Please use Number.isNaN instead"
      },
      {
        "object": "self",
        "property": "isNaN",
        "message": "Please use Number.isNaN instead"
      },
      {
        "object": "window",
        "property": "isNaN",
        "message": "Please use Number.isNaN instead"
      },
      {
        "property": "__defineGetter__",
        "message": "Please use Object.defineProperty instead."
      },
      {
        "property": "__defineSetter__",
        "message": "Please use Object.defineProperty instead."
      },
      {
        "object": "Math",
        "property": "pow",
        "message": "Use the exponentiation operator (**) instead."
      }
    ],
    "no-return-assign": [
      "error",
      "always"
    ],
    "no-return-await": "error",
    "no-script-url": "error",
    "no-self-assign": [
      "error",
      {
        "props": false
      }
    ],
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-throw-literal": "error",
    "no-unmodified-loop-condition": "off",
    "no-unused-expressions": [
      "error",
      {
        "allowShortCircuit": false,
        "allowTernary": false,
        "allowTaggedTemplates": false
      }
    ],
    "no-unused-labels": "error",
    "no-useless-call": "off",
    "no-useless-concat": "error",
    "no-useless-escape": "error",
    "no-useless-return": "error",
    "no-void": "error",
    "no-warning-comments": [
      "off",
      {
        "terms": [
          "todo",
          "fixme",
          "xxx"
        ],
        "location": "start"
      }
    ],
    "no-with": "error",
    "prefer-promise-reject-errors": [
      "error",
      {
        "allowEmptyReject": true
      }
    ],
    "radix": "error",
    "require-await": "off",
    "require-unicode-regexp": "off",
    "vars-on-top": "error",
    "wrap-iife": [
      "error",
      "outside",
      {
        "functionPrototypeMethods": false
      }
    ],
    "yoda": "error",
    "for-direction": "error",
    "getter-return": [
      "error",
      {
        "allowImplicit": true
      }
    ],
    "no-async-promise-executor": "off",
    "no-await-in-loop": "error",
    "no-compare-neg-zero": "error",
    "no-cond-assign": [
      "error",
      "always"
    ],
    "no-console": "warn",
    "no-constant-condition": "warn",
    "no-control-regex": "error",
    "no-debugger": "error",
    "no-dupe-args": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-empty": "error",
    "no-empty-character-class": "error",
    "no-ex-assign": "error",
    "no-extra-boolean-cast": "error",
    "no-extra-parens": [
      "off",
      "all",
      {
        "conditionalAssign": true,
        "nestedBinaryExpressions": false,
        "returnAssign": false,
        "ignoreJSX": "all",
        "enforceForArrowConditionals": false
      }
    ],
    "no-extra-semi": "error",
    "no-func-assign": "error",
    "no-inner-declarations": "error",
    "no-invalid-regexp": "error",
    "no-irregular-whitespace": "error",
    "no-misleading-character-class": "off",
    "no-obj-calls": "error",
    "no-prototype-builtins": "error",
    "no-regex-spaces": "error",
    "no-sparse-arrays": "error",
    "no-template-curly-in-string": "error",
    "no-unexpected-multiline": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "no-negated-in-lhs": "off",
    "require-atomic-updates": "off",
    "use-isnan": "error",
    "valid-jsdoc": "off",
    "valid-typeof": [
      "error",
      {
        "requireStringLiterals": true
      }
    ],
    "callback-return": "off",
    "global-require": "error",
    "handle-callback-err": "off",
    "no-buffer-constructor": "error",
    "no-mixed-requires": [
      "off",
      false
    ],
    "no-new-require": "error",
    "no-path-concat": "error",
    "no-process-env": "off",
    "no-process-exit": "off",
    "no-restricted-modules": "off",
    "no-sync": "off",
    "array-bracket-newline": [
      "off",
      "consistent"
    ],
    "array-element-newline": [
      "off",
      {
        "multiline": true,
        "minItems": 3
      }
    ],
    "array-bracket-spacing": [
      "error",
      "never"
    ],
    "block-spacing": [
      "error",
      "always"
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": false
      }
    ],
    "camelcase": [
      "error",
      {
        "properties": "never"
      }
    ],
    "capitalized-comments": [
      "off",
      "never",
      {
        "line": {
          "ignorePattern": ".*",
          "ignoreInlineComments": true,
          "ignoreConsecutiveComments": true
        },
        "block": {
          "ignorePattern": ".*",
          "ignoreInlineComments": true,
          "ignoreConsecutiveComments": true
        }
      }
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "always-multiline",
        "objects": "always-multiline",
        "imports": "always-multiline",
        "exports": "always-multiline",
        "functions": "always-multiline"
      }
    ],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "comma-style": [
      "error",
      "last",
      {
        "exceptions": {
          "ArrayExpression": false,
          "ArrayPattern": false,
          "ArrowFunctionExpression": false,
          "CallExpression": false,
          "FunctionDeclaration": false,
          "FunctionExpression": false,
          "ImportDeclaration": false,
          "ObjectExpression": false,
          "ObjectPattern": false,
          "VariableDeclaration": false,
          "NewExpression": false
        }
      }
    ],
    "computed-property-spacing": [
      "error",
      "never"
    ],
    "consistent-this": "off",
    "eol-last": [
      "error",
      "always"
    ],
    "func-call-spacing": [
      "error",
      "never"
    ],
    "func-name-matching": [
      "off",
      "always",
      {
        "includeCommonJSModuleExports": false
      }
    ],
    "func-names": "warn",
    "func-style": [
      "off",
      "expression"
    ],
    "function-paren-newline": [
      "error",
      "consistent"
    ],
    "id-blacklist": "off",
    "id-length": "off",
    "id-match": "off",
    "implicit-arrow-linebreak": [
      "error",
      "beside"
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1,
        "VariableDeclarator": 1,
        "outerIIFEBody": 1,
        "FunctionDeclaration": {
          "parameters": 1,
          "body": 1
        },
        "FunctionExpression": {
          "parameters": 1,
          "body": 1
        },
        "CallExpression": {
          "arguments": 1
        },
        "ArrayExpression": 1,
        "ObjectExpression": 1,
        "ImportDeclaration": 1,
        "flatTernaryExpressions": false,
        "ignoredNodes": [
          "JSXElement",
          "JSXElement > *",
          "JSXAttribute",
          "JSXIdentifier",
          "JSXNamespacedName",
          "JSXMemberExpression",
          "JSXSpreadAttribute",
          "JSXExpressionContainer",
          "JSXOpeningElement",
          "JSXClosingElement",
          "JSXText",
          "JSXEmptyExpression",
          "JSXSpreadChild"
        ],
        "ignoreComments": false
      }
    ],
    "jsx-quotes": [
      "error",
      "prefer-double"
    ],
    "key-spacing": [
      "error",
      {
        "beforeColon": false,
        "afterColon": true
      }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true,
        "overrides": {
          "return": {
            "after": true
          },
          "throw": {
            "after": true
          },
          "case": {
            "after": true
          }
        }
      }
    ],
    "line-comment-position": [
      "off",
      {
        "position": "above",
        "ignorePattern": "",
        "applyDefaultPatterns": true
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "lines-between-class-members": [
      "error",
      "always",
      {
        "exceptAfterSingleLine": false
      }
    ],
    "lines-around-comment": "off",
    "lines-around-directive": [
      "error",
      {
        "before": "always",
        "after": "always"
      }
    ],
    "max-depth": [
      "off",
      4
    ],
    "max-len": [
      "off",
      100,
      2,
      {
        "ignoreUrls": true,
        "ignoreComments": false,
        "ignoreRegExpLiterals": true,
        "ignoreStrings": true,
        "ignoreTemplateLiterals": true
      }
    ],
    "max-lines": [
      "off",
      {
        "max": 300,
        "skipBlankLines": true,
        "skipComments": true
      }
    ],
    "max-lines-per-function": [
      "off",
      {
        "max": 50,
        "skipBlankLines": true,
        "skipComments": true,
        "IIFEs": true
      }
    ],
    "max-nested-callbacks": "off",
    "max-params": [
      "off",
      3
    ],
    "max-statements": [
      "off",
      10
    ],
    "max-statements-per-line": [
      "off",
      {
        "max": 1
      }
    ],
    "multiline-comment-style": [
      "off",
      "starred-block"
    ],
    "multiline-ternary": [
      "off",
      "never"
    ],
    "new-cap": [
      "error",
      {
        "newIsCap": true,
        "newIsCapExceptions": [],
        "capIsNew": false,
        "capIsNewExceptions": [
          "Immutable.Map",
          "Immutable.Set",
          "Immutable.List"
        ]
      }
    ],
    "new-parens": "error",
    "newline-after-var": "off",
    "newline-before-return": "off",
    "newline-per-chained-call": [
      "error",
      {
        "ignoreChainWithDepth": 4
      }
    ],
    "no-array-constructor": "error",
    "no-bitwise": "error",
    "no-continue": "error",
    "no-inline-comments": "off",
    "no-lonely-if": "error",
    "no-mixed-operators": [
      "off",
      {
        "groups": [
          [
            "%",
            "**"
          ],
          [
            "%",
            "+"
          ],
          [
            "%",
            "-"
          ],
          [
            "%",
            "*"
          ],
          [
            "%",
            "/"
          ],
          [
            "**",
            "+"
          ],
          [
            "**",
            "-"
          ],
          [
            "**",
            "*"
          ],
          [
            "**",
            "/"
          ],
          [
            "&",
            "|",
            "^",
            "~",
            "<<",
            ">>",
            ">>>"
          ],
          [
            "==",
            "!=",
            "===",
            "!==",
            ">",
            ">=",
            "<",
            "<="
          ],
          [
            "&&",
            "||"
          ],
          [
            "in",
            "instanceof"
          ]
        ],
        "allowSamePrecedence": false
      }
    ],
    "no-mixed-spaces-and-tabs": "error",
    "no-multi-assign": [
      "off"
    ],
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 2,
        "maxEOF": 0
      }
    ],
    "no-negated-condition": "off",
    "no-nested-ternary": "error",
    "no-new-object": "error",
    "no-plusplus": "off",
    "no-restricted-syntax": [
      "error",
      {
        "selector": "ForInStatement",
        "message": "for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array."
      },
      {
        "selector": "ForOfStatement",
        "message": "iterators/generators require regenerator-runtime, which is too heavyweight for this guide to allow them. Separately, loops should be avoided in favor of array iterations."
      },
      {
        "selector": "LabeledStatement",
        "message": "Labels are a form of GOTO; using them makes code confusing and hard to maintain and understand."
      },
      {
        "selector": "WithStatement",
        "message": "`with` is disallowed in strict mode because it makes code impossible to predict and optimize."
      }
    ],
    "no-spaced-func": "error",
    "no-tabs": "error",
    "no-ternary": "off",
    "no-trailing-spaces": [
      "error",
      {
        "skipBlankLines": false,
        "ignoreComments": false
      }
    ],
    "no-underscore-dangle": [
      "error",
      {
        "allow": [],
        "allowAfterThis": false,
        "allowAfterSuper": false,
        "enforceInMethodNames": false
      }
    ],
    "no-unneeded-ternary": [
      "error",
      {
        "defaultAssignment": false
      }
    ],
    "no-whitespace-before-property": "error",
    "nonblock-statement-body-position": [
      "error",
      "beside",
      {
        "overrides": {}
      }
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}

[ljharb]

  "react": {
     "pragma": "React",
     "version": "16.0"
   },

this should definitely be working; I'll look into it.

[ljharb]

I've added some more tests to master, that pass. I'm going to assume this is fixed on master but not yet released; I'll reopen if it's still a problem after publishing the next release.

[ljharb]

v7.12.4 has been released.