.eslintrc

{
  "env": {
    "browser": true,
    "es2021": true,
    "node": true
  },
  "extends": [
    "plugin:@typescript-eslint/recommended",
    "airbnb",
    "airbnb-typescript",
    "prettier"
  ],
  "overrides": [
    {
      "env": {
        "node": true
      },
      "files": [".eslintrc.{js,cjs}"],
      "parserOptions": {
        "sourceType": "script"
      }
    }
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    },
    "project": ["./packages/*/tsconfig.json", "./tsconfig.json"]
  },
  "plugins": ["import", "@typescript-eslint", "react"],
  "ignorePatterns": ["node_modules/", "dist/"],
  "rules": {
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        // Since airbnb javascript rules does not allow to import typescript files without extensions, we need to disable it
        "ts": "never",
        "tsx": "never"
      }
    ],
    "import/named": "error",
    "import/no-extraneous-dependencies": [
      "error",
      {
        "packageDir": [
          "./packages/web",
          "./packages/api",
          "./packages/interface",
          "."
        ]
      }
    ],
    "import/prefer-default-export": "off",
    "class-methods-use-this": "off",
    "no-param-reassign": [
      "error",
      {
        "props": true,
        // function parameters cannot be reassigned for readability, except for the ones in the array
        "ignorePropertyModificationsFor": ["socket", "state"]
      }
    ],
    "no-restricted-imports": [
      "error",
      {
        "patterns": [
          {
            "group": ["../../*"],
            "message": "Usage of relative parent imports is not allowed. Use path alias instead."
          }
        ]
      }
    ],
    "radix": ["error", "as-needed"],
    "react/function-component-definition": [
      "error",
      {
        "namedComponents": "arrow-function",
        "unnamedComponents": "arrow-function"
      }
    ],
    "react/jsx-uses-react": "off",
    "react/jsx-no-useless-fragment": [
      "error",
      {
        // this allows <>{value}</> syntax, where value is a string or a number
        "allowExpressions": true
      }
    ],
    "react/jsx-props-no-spreading": "off",
    "react/no-unknown-property": [
      "error",
      {
        "ignore": ["css"]
      }
    ],
    "react/react-in-jsx-scope": "off",
    "react/require-default-props": [
      "error",
      {
        // default values of the optional props must be provided as function arguments
        "functions": "defaultArguments"
      }
    ],
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "argsIgnorePattern": "^_",
        "varsIgnorePattern": "^_",
        "caughtErrorsIgnorePattern": "^_"
      }
    ]
  },
  "settings": {
    "import/parsers": {
      "@typescript-eslint/parser": [".ts", ".tsx"]
    },
    "import/resolver": {
      "typescript": {
        "project": ["./packages/*/tsconfig.json", "./tsconfig.json"]
      }
    },
    "react": {
      "version": "18.2.0"
    }
  }
}