.eslintrc

{
  "parser": "@typescript-eslint/parser",
  "env": {
    "node": true
  },
  "extends": [
    "plugin:prettier/recommended",
    "prettier"
  ],
  "plugins": [
    "jest",
    "prettier",
    "@typescript-eslint"
  ],

  "rules": {
    "no-redeclare": "off",
    "@typescript-eslint/no-redeclare": [
      "error"
    ],
    "no-new": 0,
    "curly": [
      2,
      "all"
    ],
    "no-unused-expressions": [
      "error",
      {
        "allowShortCircuit": true
      }
    ],
    "max-len": [
      "warn",
      {
        "code": 85,
        "ignoreStrings": true,
        "ignoreTemplateLiterals": true,
        "ignoreRegExpLiterals": true,
        "ignoreComments": true,
        "ignoreUrls": true,
        "ignorePattern": "^import [^,]+ from"
      }
    ],
    "comma-dangle": [
      "error",
      "never"
    ],
    "semi": [
      2,
      "never"
    ],
    "camelcase": 0,
    "new-cap": 0,
    "strict": 0,
    "arrow-parens": 0,
    "no-underscore-dangle": 0,
    "no-use-before-define": 0,
    "eol-last": 0,
    "quotes": [
      2,
      "single",
      {
        "avoidEscape": true
      }
    ],
    "eqeqeq": 0,
    "no-useless-catch": 0,
    "no-nested-ternary": 0,
    "class-methods-use-this": 0,
    "no-return-assign": 0,
    "no-mixed-operators": 0,
    "no-param-reassign": 0,
    "no-console": 0,
    "no-shadow": 0,
    "consistent-return": 0,
    "no-unused-vars": "error",
    "prefer-const": 0,
    "global-require": 0,
    "no-plusplus": 0,
    "array-callback-return": 0,
    "no-empty": 0,
    "default-case": 0,
    "no-undef": 2,
    "no-case-declarations": 0,
    "no-useless-escape": 0,
    "no-bitwise": 0,
    "no-confusing-arrow": 0,
    "no-prototype-builtins": 0,
    "prefer-spread": 0,
    "no-self-assign": 0,
    "no-useless-constructor": 0,
    "prefer-destructuring": 0,
    "prettier/prettier": [
      "error",
      {
        "semi": false,
        "singleQuote": true,
        "printWidth": 80,
        "trailingComma": "none",
        "arrowParens": "avoid",
        "endOfLine": "auto"
      }
    ],
    "padding-line-between-statements": [
      2,
      // Always require blank lines after directive (like "use-strict"), except between directives
      {
        "blankLine": "always",
        "prev": "directive",
        "next": "*"
      },
      {
        "blankLine": "any",
        "prev": "directive",
        "next": "directive"
      },
      // Always require blank lines after import, except between imports
      {
        "blankLine": "always",
        "prev": "import",
        "next": "*"
      },
      {
        "blankLine": "any",
        "prev": "import",
        "next": "import"
      },
      // Always require blank lines before and after every sequence of variable declarations and export
      {
        "blankLine": "always",
        "prev": "*",
        "next": [
          "const",
          "let",
          "var",
          "export"
        ]
      },
      {
        "blankLine": "always",
        "prev": [
          "const",
          "let",
          "var",
          "export"
        ],
        "next": "*"
      },
      {
        "blankLine": "any",
        "prev": [
          "const",
          "let",
          "var",
          "export"
        ],
        "next": [
          "const",
          "let",
          "var",
          "export"
        ]
      },
      // Always require blank lines before and after class declaration, if, do/while, switch, try
      {
        "blankLine": "always",
        "prev": "*",
        "next": [
          "if",
          "class",
          "for",
          "do",
          "while",
          "switch",
          "try"
        ]
      },
      {
        "blankLine": "always",
        "prev": [
          "if",
          "class",
          "for",
          "do",
          "while",
          "switch",
          "try"
        ],
        "next": "*"
      },
      // Always require blank lines before return statements
      {
        "blankLine": "always",
        "prev": "*",
        "next": "return"
      }
    ]
  },
  "overrides": [
    {
      "files": [
        "**/*.ts",
        "**/*.tsx"
      ],
      "rules": {
        "no-unused-vars": [
          "off"
        ],
        "no-undef": [
          "off"
        ],
        "@typescript-eslint/no-unused-vars": [
          2,
          {
            "args": "none"
          }
        ]
      }
    }
  ]
}