.eslintrc.json

{
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true,
    "jest": true
  },
  "parser": "@typescript-eslint/parser",
  "extends": [
    "plugin:@typescript-eslint/recommended",
    "prettier",
    "plugin:prettier/recommended"
  ],
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "plugins": [
    "jest",
    "unused-imports",
    "@typescript-eslint"
  ],
  "rules": {
    "indent": "off",
    "@typescript-eslint/indent": [
      "error",
      2
    ],
    "array-bracket-newline": [
      "error",
      "consistent"
    ],
    "strict": [
      "error",
      "safe"
    ],
    "block-scoped-var": "error",
    "complexity": "warn",
    "default-case": "error",
    "dot-notation": "warn",
    "eqeqeq": "error",
    "guard-for-in": "warn",
    "linebreak-style": [
      "warn",
      "unix"
    ],
    "no-alert": "error",
    "no-case-declarations": "error",
    "no-console": "off",
    "no-constant-condition": "error",
    "no-continue": "warn",
    "no-div-regex": "error",
    "no-empty": "warn",
    "no-empty-pattern": "error",
    "no-implicit-coercion": "error",
    "prefer-arrow-callback": "warn",
    "no-labels": "error",
    "no-loop-func": "error",
    "no-nested-ternary": "warn",
    "no-script-url": "error",
    "no-warning-comments": "warn",
    "quote-props": [
      "error",
      "as-needed"
    ],
    "require-yield": "error",
    "max-nested-callbacks": [
      "error",
      4
    ],
    "max-depth": [
      "error",
      4
    ],
    "space-before-function-paren": [
      "error",
      {
        "anonymous": "never",
        "named": "never",
        "asyncArrow": "always"
      }
    ],
    "padding-line-between-statements": [
      "error",
      {
        "blankLine": "always",
        "prev": "*",
        "next": "if"
      },
      {
        "blankLine": "always",
        "prev": "*",
        "next": "function"
      },
      {
        "blankLine": "always",
        "prev": "*",
        "next": "return"
      }
    ],
    "no-useless-constructor": "off",
    "no-dupe-class-members": "off",
    "no-unused-expressions": "off",
    "curly": [
      "error",
      "multi-line"
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "comma-dangle": [
      "error",
      "always-multiline"
    ],
    "@typescript-eslint/no-useless-constructor": "error",
    "@typescript-eslint/no-unused-expressions": "error",
    "@typescript-eslint/member-delimiter-style": [
      "error",
      {
        "multiline": {
          "delimiter": "none",
          "requireLast": true
        },
        "singleline": {
          "delimiter": "semi",
          "requireLast": false
        }
      }
    ],
    "@typescript-eslint/ban-ts-comment": [
      "error",
      {
        "ts-expect-error": "allow-with-description",
        "ts-ignore": "allow-with-description",
        "ts-nocheck": "allow-with-description",
        "ts-check": "allow-with-description",
        "minimumDescriptionLength": 6
      }
    ],
    "require-await": "off",
    "@typescript-eslint/promise-function-async": "error",
    "@typescript-eslint/require-await": "off",
    "@typescript-eslint/no-non-null-assertion": "off",
    "@typescript-eslint/no-unused-vars": "off",
    "unused-imports/no-unused-imports": "error",
    "unused-imports/no-unused-vars": [
      "warn",
      {
        "vars": "all",
        "varsIgnorePattern": "^_",
        "args": "after-used",
        "argsIgnorePattern": "^_"
      }
    ]
  }
}