.eslintrc.json

{
  "extends": ["plugin:react/recommended", "eslint-config-prettier"],
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "overrides": [
    {
      "files": ["*.json"],
      "extends": ["plugin:json/recommended"]
    },
    {
      "files": ["*.mdx"],
      "extends": ["plugin:mdx/overrides"]
    },
    {
      "parser": "@typescript-eslint/parser",
      "plugins": ["@typescript-eslint"],
      "files": ["*.ts", "*.tsx"]
    },
    {
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "project": "components/tsconfig.json"
      },
      "plugins": ["@typescript-eslint"],
      "files": ["components/**/stencil.tsx"],
      "rules": {
        "react/no-unknown-property": "off",
        "react/react-in-jsx-scope": "off"
      }
    }
  ],
  "rules": {
    "array-callback-return": ["error", { "checkForEach": false }],
    "block-scoped-var": "error",
    "consistent-return": "error",
    "constructor-super": "error",
    "eqeqeq": "error",
    "for-direction": "error",
    "getter-return": "error",
    "no-alert": "error",
    "no-async-promise-executor": "error",
    "no-caller": "error",
    "no-case-declarations": "error",
    "no-class-assign": "error",
    "no-compare-neg-zero": "error",
    "no-cond-assign": "error",
    "no-const-assign": "error",
    "no-constant-condition": "error",
    "no-constructor-return": "error",
    "no-control-regex": "error",
    "no-debugger": "error",
    "no-delete-var": "error",
    "no-dupe-args": "error",
    "no-dupe-class-members": "error",
    "no-dupe-else-if": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-empty": "error",
    "no-empty-character-class": "error",
    "no-empty-pattern": "error",
    "no-eval": "error",
    "no-ex-assign": "error",
    "no-extra-boolean-cast": "error",
    "no-extra-semi": "error",
    "no-fallthrough": "error",
    "no-func-assign": "error",
    "no-global-assign": "error",
    "no-implicit-globals": "error",
    "no-implied-eval": "error",
    "no-import-assign": "error",
    "no-inner-declarations": "error",
    "no-invalid-regexp": "error",
    "no-invalid-this": "error",
    "no-irregular-whitespace": "error",
    "no-lone-blocks": "error",
    "no-loop-func": "error",
    "no-misleading-character-class": "error",
    "no-multi-str": "error",
    "no-new-func": "error",
    "no-new-symbol": "error",
    "no-new-wrappers": "error",
    "no-obj-calls": "error",
    "no-octal": "error",
    "no-octal-escape": "error",
    "no-param-reassign": "error",
    "no-prototype-builtins": "error",
    "no-redeclare": "error",
    "no-regex-spaces": "error",
    "no-return-assign": "error",
    "no-return-await": "error",
    "no-self-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-setter-return": "error",
    "no-shadow-restricted-names": "error",
    "no-sparse-arrays": "error",
    "no-this-before-super": "error",
    "no-throw-literal": "error",
    "no-undef": "error",
    "no-unexpected-multiline": "error",
    "no-unmodified-loop-condition": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "no-unused-expressions": "error",
    "no-unused-labels": "error",
    "no-unused-vars": "error",
    "no-useless-call": "error",
    "no-useless-catch": "error",
    "no-useless-concat": "error",
    "no-useless-escape": "error",
    "no-useless-return": "error",
    "no-void": "error",
    "no-with": "error",
    "prefer-regex-literals": "error",
    "radix": "error",
    "require-yield": "error",
    "use-isnan": "error",
    "valid-typeof": "error",
    "vars-on-top": "off",
    "yoda": "error"
  }
}