.eslintrc.json

{
  "env": {
    "browser": true,
    "es2020": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:jest/recommended",
    "plugin:testing-library/dom",
    "plugin:testing-library/react",
    "plugin:jest-dom/recommended"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "plugins": [
    "react",
    "jest",
    "compat",
    "testing-library",
    "jest-dom"
  ],
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "overrides": [
    {
      "files": [
        "*_spec.*",
        "*.test.*"
      ],
      "env": {
        "jest": true,
        "es2020": true
      }
    },
    {
      "files": [
        "esbuild/*",
        "jest.config.js"
      ],
      "parserOptions": {
        "project": null
      },
      "env": {
        "node": true
      }
    },
    {
      "files": [
        "*.ts",
        "*.tsx"
      ],
      "extends": [
        "eslint:recommended",
        "plugin:react/recommended",
        "plugin:jest/recommended",
        "plugin:testing-library/dom",
        "plugin:testing-library/react",
        "plugin:jest-dom/recommended",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended",
        "plugin:@typescript-eslint/recommended-requiring-type-checking"
      ],
      "rules": {
        "semi": [
          "error",
          "never"
        ],
        "no-use-before-define": [
          "off"
        ],
        "@typescript-eslint/no-use-before-define": [
          "error"
        ],
        "@typescript-eslint/no-empty-function": "off",
        "arrow-body-style": [
          "error",
          "always"
        ],
        "no-useless-constructor": "off",
        "@typescript-eslint/no-useless-constructor": "error",
        "@typescript-eslint/no-unused-vars": [
          "error",
          {
            "varsIgnorePattern": "^_",
            "argsIgnorePattern": "^_"
          }
        ],
        "default-case": "off",
        "@typescript-eslint/switch-exhaustiveness-check": "error",
        "react/react-in-jsx-scope": [
          "off"
        ],
        "space-before-function-paren": ["error", {
          "anonymous": "never",
          "named": "never",
          "asyncArrow": "always"
        }]
      }
    }
  ],
  "rules": {
    "compat/compat": "error",
    "no-await-in-loop": [
      "error"
    ],
    "no-template-curly-in-string": [
      "error"
    ],
    "array-callback-return": [
      "error"
    ],
    "block-scoped-var": [
      "error"
    ],
    "complexity": [
      "error",
      10
    ],
    "curly": [
      "error"
    ],
    "default-case": [
      "error"
    ],
    "dot-location": [
      "error",
      "property"
    ],
    "no-eq-null": [
      "error"
    ],
    "no-eval": [
      "error"
    ],
    "no-extend-native": [
      "error"
    ],
    "no-floating-decimal": [
      "error"
    ],
    "no-implicit-coercion": [
      "error"
    ],
    "no-implicit-globals": [
      "error"
    ],
    "no-implied-eval": [
      "error"
    ],
    "no-labels": [
      "error"
    ],
    "no-lone-blocks": [
      "error"
    ],
    "no-loop-func": [
      "error"
    ],
    "no-multi-spaces": [
      "error"
    ],
    "no-octal-escape": [
      "error"
    ],
    "no-param-reassign": [
      "error"
    ],
    "no-proto": [
      "error"
    ],
    "no-return-assign": [
      "error"
    ],
    "no-return-await": [
      "error"
    ],
    "no-script-url": [
      "error"
    ],
    "no-self-compare": [
      "error"
    ],
    "no-sequences": [
      "error"
    ],
    "no-throw-literal": [
      "error"
    ],
    "no-unmodified-loop-condition": [
      "error"
    ],
    "no-unused-expressions": [
      "error"
    ],
    "no-useless-call": [
      "error"
    ],
    "no-useless-concat": [
      "error"
    ],
    "no-useless-return": [
      "error"
    ],
    "no-void": [
      "error"
    ],
    "prefer-promise-reject-errors": [
      "error"
    ],
    "require-await": [
      "error"
    ],
    "wrap-iife": [
      "error",
      "inside"
    ],
    "yoda": [
      "error"
    ],
    "no-shadow": [
      "error"
    ],
    "no-undef-init": [
      "error"
    ],
    "no-unused-vars": [
      "error",
      {
        "varsIgnorePattern": "^_",
        "argsIgnorePattern": "^_"
      }
    ],
    "no-use-before-define": [
      "error"
    ],
    "arrow-parens": [
      "error"
    ],
    "arrow-spacing": [
      "error"
    ],
    "generator-star-spacing": [
      "error"
    ],
    "no-confusing-arrow": [
      "error"
    ],
    "no-duplicate-imports": [
      "error"
    ],
    "no-useless-computed-key": [
      "error"
    ],
    "no-useless-constructor": [
      "error"
    ],
    "no-useless-rename": [
      "error"
    ],
    "no-var": [
      "error"
    ],
    "object-shorthand": [
      "error"
    ],
    "prefer-arrow-callback": [
      "error"
    ],
    "prefer-const": [
      "error"
    ],
    "prefer-numeric-literals": [
      "error"
    ],
    "prefer-rest-params": [
      "error"
    ],
    "prefer-spread": [
      "error"
    ],
    "prefer-template": [
      "error"
    ],
    "rest-spread-spacing": [
      "error"
    ],
    "symbol-description": [
      "error"
    ],
    "template-curly-spacing": [
      "error"
    ],
    "yield-star-spacing": [
      "error"
    ],
    "array-bracket-spacing": [
      "error"
    ],
    "block-spacing": [
      "error",
      "never"
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "always-multiline",
        "objects": "always-multiline",
        "imports": "always-multiline",
        "exports": "always-multiline",
        "functions": "ignore"
      }
    ],
    "comma-spacing": [
      "error"
    ],
    "comma-style": [
      "error"
    ],
    "computed-property-spacing": [
      "error"
    ],
    "consistent-this": [
      "error",
      "self"
    ],
    "eol-last": [
      "error"
    ],
    "func-call-spacing": [
      "error"
    ],
    "func-name-matching": [
      "error"
    ],
    "func-names": [
      "error",
      "as-needed"
    ],
    "id-length": [
      "error",
      {
        "min": 1,
        "max": 25,
        "exceptions": [
          "$",
          "_",
          "i",
          "j",
          "x",
          "y",
          "z",
          "getInitialSourceClientOffset"
        ]
      }
    ],
    "indent": [
      "error",
      2
    ],
    "jsx-quotes": [
      "error"
    ],
    "key-spacing": [
      "error"
    ],
    "keyword-spacing": [
      "error"
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "lines-around-directive": [
      "error"
    ],
    "max-depth": [
      "error",
      4
    ],
    "max-len": [
      "error",
      160,
      2
    ],
    "max-lines": [
      "error",
      650
    ],
    "max-nested-callbacks": [
      "error",
      5
    ],
    "max-statements": [
      "error",
      50
    ],
    "max-statements-per-line": [
      "error",
      {
        "max": 2
      }
    ],
    "multiline-ternary": [
      "error",
      "never"
    ],
    "new-parens": [
      "error"
    ],
    "newline-per-chained-call": [
      "error",
      {
        "ignoreChainWithDepth": 3
      }
    ],
    "no-array-constructor": [
      "error"
    ],
    "no-bitwise": [
      "warn"
    ],
    "no-lonely-if": [
      "error"
    ],
    "no-mixed-operators": [
      "error",
      {
        "groups": [
          [
            "&",
            "|",
            "^",
            "~",
            "<<",
            ">>",
            ">>>"
          ],
          [
            "==",
            "!=",
            "===",
            "!==",
            ">",
            ">=",
            "<",
            "<="
          ],
          [
            "&&",
            "||"
          ],
          [
            "in",
            "instanceof"
          ]
        ]
      }
    ],
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 2
      }
    ],
    "no-negated-condition": [
      "error"
    ],
    "no-nested-ternary": [
      "error"
    ],
    "no-new-object": [
      "error"
    ],
    "no-tabs": [
      "error"
    ],
    "no-trailing-spaces": [
      "error"
    ],
    "no-unneeded-ternary": [
      "error"
    ],
    "no-whitespace-before-property": [
      "error"
    ],
    "object-curly-newline": [
      "off"
    ],
    "object-curly-spacing": [
      "off"
    ],
    "operator-assignment": [
      "error"
    ],
    "operator-linebreak": [
      "error",
      "before"
    ],
    "padded-blocks": [
      "error",
      "never"
    ],
    "quote-props": [
      "error",
      "as-needed"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "always"
    ],
    "semi-spacing": [
      "error"
    ],
    "space-before-blocks": [
      "error"
    ],
    "space-before-function-paren": [
      "error",
      "never"
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "space-infix-ops": [
      "error"
    ],
    "space-unary-ops": [
      "error",
      {
        "words": true,
        "nonwords": false
      }
    ],
    "template-tag-spacing": [
      "error"
    ],
    "jest/expect-expect": [
      "error",
      {
        "assertFunctionNames": [
          "expect",
          "test*"
        ]
      }
    ],
    "no-sync": [
      "error"
    ],
    "no-process-exit": [
      "error"
    ],
    "no-process-env": [
      "error"
    ]
  }
}