.eslintrc.json

{
  "root": true,
  "extends": [
    "plugin:mattermost/react",
    "plugin:cypress/recommended",
    "plugin:react-hooks/recommended"
  ],
  "plugins": [
    "@babel/eslint-plugin",
    "mattermost",
    "import",
    "cypress",
    "no-only-tests",
    "@typescript-eslint",
    "formatjs"
  ],
  "parser": "@typescript-eslint/parser",
  "env": {
    "jest": true,
    "cypress/globals": true
  },
  "settings": {
    "import/resolver": "webpack",
    "react": {
        "pragma": "React",
        "version": "detect"
    }
  },
  "rules": {
    "header/header": [
      2,
      "line",
      " Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.\n See LICENSE.txt for license information.",
      2
    ],
    "no-duplicate-imports": 0,
    "mattermost/use-external-link": 2,
    "import/no-duplicates": 2,
    "max-nested-callbacks": ["error", 10],
    "no-unused-expressions": 0,
    "@babel/no-unused-expressions": 2,
    "eol-last": ["error", "always"],
    "import/no-unresolved": 2,
    "import/order": [
      2,
      {
        "newlines-between": "always-and-inside-groups",
        "groups": [
          "builtin",
          "external",
          [
            "internal",
            "parent"
          ],
          "sibling",
          "index"
        ]
      }
    ],
    "no-undefined": 0,
    "no-use-before-define": 0,
    "react/jsx-filename-extension": 0,
    "react/prop-types": [
      2,
      {
        "ignore": [
          "location",
          "history",
          "component"
        ]
      }
    ],
    "react/no-unknown-property": [
      2,
      {
        "ignore": [
          "mask-type"
        ]
      }
    ],
    "react/no-string-refs": 2,
    "no-only-tests/no-only-tests": ["error", {"focus": ["only", "skip"]}],
    "react/style-prop-object": [2, {
      "allow": ["Timestamp"]
    }],
    "no-restricted-imports": ["error", {
      "paths": [
        {"name": "react-bootstrap", "importNames": ["OverlayTrigger"], "message": "Please use OverlayTrigger from '/components/overlay_trigger' instead"}
      ]
    }],
    "max-lines": ["warn", {"max": 800, "skipBlankLines": true, "skipComments": true}],
    "formatjs/no-multiple-whitespaces": ["error"]
  },
  "overrides": [
    {
      "files": ["**/*.tsx", "**/*.ts"],
      "extends": [
        "plugin:@typescript-eslint/recommended"
      ],
      "rules": {
        "camelcase": 0,
        "no-shadow": 0,
        "import/no-unresolved": 0, // ts handles this better
        "@typescript-eslint/naming-convention": [
          2,
          {
            "selector": "function",
            "format": ["camelCase", "PascalCase"]
          },
          {
            "selector": "variable",
            "format": ["camelCase", "PascalCase", "UPPER_CASE"]
          },
          {
            "selector": "parameter",
            "format": ["camelCase", "PascalCase"],
            "leadingUnderscore": "allow"
          },
          {
            "selector": "typeLike",
            "format": ["PascalCase"]
          }
        ],
        "@typescript-eslint/no-non-null-assertion": 0,
        "@typescript-eslint/no-unused-vars": [
          2,
          {
            "vars": "all",
            "args": "after-used"
          }
        ],
        "@typescript-eslint/no-var-requires": 0,
        "@typescript-eslint/no-empty-function": 0,
        "@typescript-eslint/prefer-interface": 0,
        "@typescript-eslint/explicit-function-return-type": 0,
        "@typescript-eslint/explicit-module-boundary-types": 0,
        "@typescript-eslint/indent": [
          2,
          4,
          {
            "SwitchCase": 0
          }
        ],
        "@typescript-eslint/no-use-before-define": [
          2,
          {
            "classes": false,
            "functions": false,
            "variables": false
          }
        ]
      }
    },
    {
      "files": ["tests/**", "**/*.test.*", "tests/*.js", "packages/mattermost-redux/test/*"],
      "env": {
        "jest": true
      },
      "rules": {
        "func-names": 0,
        "global-require": 0,
        "max-lines": 0,
        "new-cap": 0,
        "no-empty-function": 0,
        "no-import-assign": 0,
        "no-process-env": 0,
        "prefer-arrow-callback": 0
      }
    },
    {
      "files": ["e2e/**"],
      "rules": {
        "@babel/no-unused-expressions": 0,
        "func-names": 0,
        "import/no-unresolved": 0,
        "max-nested-callbacks": 0,
        "no-process-env": 0,
        "no-unused-expressions": 0
      }
    }
  ]
}