ESLint Configuration

.eslintrc

{
  "parserOptions": {
      "ecmaVersion": 6,
      "sourceType": "module",
      "ecmaFeatures": {
          "jsx": true
      }
  },
  "env": {
    "browser": true,
    "jest": true,
    "node": true,
    "es6": true
  },
  "rules": {
    "eol-last": ["error", "always"],
    "brace-style": ["error", "stroustrup"],
    "indent": ["error", 2],
    "no-mixed-spaces-and-tabs": 2,
    "quotes": ["error","single"],
    "semi": ["error","always"],
    "comma-dangle": ["error","never"],
    "no-cond-assign": ["error","always"],
    "no-console": 1,
    "no-constant-condition": 1,
    "no-debugger": 2,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty": 1,
    "no-ex-assign": 2,
    "no-extra-semi": 2,
    "no-func-assign": 1,
    "no-irregular-whitespace": 2,
    "no-unreachable": 1,
    "valid-typeof": 2,
    "eqeqeq": 2,
    "no-undef": 2,
    "constructor-super": 1,
    "no-class-assign": 2,
    "no-const-assign": 2,
    "no-this-before-super": 1,
    "no-var": 1,
    "prefer-const": 2
  }
}