.eslintrc

{
  "extends": [
    "airbnb",
    "plugin:jsx-a11y/recommended",
    "prettier",
    "prettier/react",
    "plugin:jest/recommended"
  ],
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "jest": true,
    "node": true
  },
  "parser": "babel-eslint",
  "plugins": ["jest"],
  "rules": {
    "comma-dangle": ["error", "only-multiline"],
    "import/extensions": [
      "error",
      "never",
      {
        "css": "always",
        "jpg": "always",
        "json": "always",
        "png": "always",
        "svg": "always"
      }
    ],
    "import/no-unresolved": "off",
    "import/no-extraneous-dependencies": ["error", { "devDependencies": true }],
    "import/order": [
      "error",
      {
        "groups": ["builtin", "external", "internal", "parent", "sibling", "index"]
      }
    ],
    "jest/consistent-test-it": ["error", { "fn": "it", "withinDescribe": "it" }],
    "jest/expect-expect": [
      "error",
      {
        "assertFunctionNames": ["expect", "createShallowSnapshotTest", "createSnapshotTest"]
      }
    ],

    "jest/lowercase-name": [
      "error",
      {
        "ignore": ["describe"]
      }
    ],
    "jest/no-jasmine-globals": "error",
    "jest/no-test-prefixes": "error",
    "jest/no-test-return-statement": "error",
    "jest/prefer-strict-equal": "error",
    "jest/prefer-to-be-null": "error",
    "jest/prefer-to-be-undefined": "error",
    "jest/require-tothrow-message": "error",
    "jest/valid-describe": "error",
    "jsx-a11y/anchor-is-valid": [
      "error",
      {
        "components": ["Link"],
        "specialLink": ["hrefLeft", "hrefRight"],
        "aspects": ["invalidHref", "preferButton"]
      }
    ],
    "jsx-a11y/label-has-for": [
      2,
      {
        "components": ["Label"],
        "required": {
          "some": ["nesting", "id"]
        },
        "allowChildren": false
      }
    ],
    "max-len": ["error", { "code": 100, "ignoreUrls": true }],
    "multiline-ternary": ["error", "always-multiline"],
    "no-console": "warn",
    "no-use-before-define": "off",
    "object-curly-newline": [
      "error",
      {
        "ObjectExpression": { "multiline": true, "consistent": true },
        "ObjectPattern": { "multiline": true, "consistent": true },
        "ImportDeclaration": { "multiline": false },
        "ExportDeclaration": { "multiline": true, "consistent": true }
      }
    ],
    "react/forbid-prop-types": ["error", { "forbid": ["any"] }],
    "react/jsx-curly-brace-presence": ["error", { "props": "never", "children": "never" }],
    "react/jsx-filename-extension": ["error", { "extensions": [".js"] }],
    "react/jsx-max-props-per-line": ["error", { "maximum": 1, "when": "multiline" }],
    "react/jsx-one-expression-per-line": "off",
    "react/no-did-mount-set-state": "off",
    "react/no-unused-prop-types": "off",
    "react/no-unused-state": "error",
    "react/prefer-stateless-function": ["off"]
  },
  "overrides": [
    {
      "files": ["*.test.js", "*.spec.js"],
      "rules": {
        "function-paren-newline": ["error", "consistent"]
      }
    },
    {
      "files": [
        "pages/**.js",
        "components/head.js",
        "components/nav.js",
        "components/Timeline/historyData.js"
      ],
      "rules": {
        "react/react-in-jsx-scope": "off"
      }
    },
    {
      "files": ["components/nav.js", "components/Footer/Footer.js"],
      "rules": {
        "jsx-a11y/anchor-is-valid": "off"
      }
    }
  ]
}