.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": "latest"
  },
  "globals": {
    "BigInt": true
  },
  "rules": {
    "indent": [
      "error",
      2
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "always"
    ],
    "no-loop-func": [
      "error"
    ],
    "block-spacing": [
      "error",
      "always"
    ],
    "camelcase": [
      "error"
    ],
    "eqeqeq": [
      "error",
      "always"
    ],
    "strict": [
      "error",
      "global"
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "comma-style": [
      "error",
      "last"
    ],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "eol-last": [
      "error"
    ],
    "func-call-spacing": [
      "error",
      "never"
    ],
    "key-spacing": [
      "error",
      {
        "beforeColon": false,
        "afterColon": true,
        "mode": "minimum"
      }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true,
        "overrides": {
          "function": {
            "after": false
          }
        }
      }
    ],
    "max-len": [
      "error",
      {
        "code": 80,
        "ignoreUrls": true
      }
    ],
    "max-nested-callbacks": [
      "error",
      {
        "max": 7
      }
    ],
    "new-cap": [
      "error",
      {
        "newIsCap": true,
        "capIsNew": false,
        "properties": true
      }
    ],
    "new-parens": [
      "error"
    ],
    "no-lonely-if": [
      "error"
    ],
    "no-trailing-spaces": [
      "error"
    ],
    "no-unneeded-ternary": [
      "error"
    ],
    "no-whitespace-before-property": [
      "error"
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "operator-assignment": [
      "error",
      "always"
    ],
    "operator-linebreak": [
      "error",
      "after"
    ],
    "semi-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "space-before-blocks": [
      "error",
      "always"
    ],
    "space-before-function-paren": [
      "error",
      {
        "anonymous": "never",
        "named": "never",
        "asyncArrow": "always"
      }
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "space-infix-ops": [
      "error"
    ],
    "space-unary-ops": [
      "error",
      {
        "words": true,
        "nonwords": false,
        "overrides": {
          "typeof": false
        }
      }
    ],
    "no-unreachable": [
      "error"
    ],
    "no-global-assign": [
      "error"
    ],
    "no-self-compare": [
      "error"
    ],
    "no-unmodified-loop-condition": [
      "error"
    ],
    "no-constant-condition": [
      "error",
      {
        "checkLoops": false
      }
    ],
    "no-console": [
      "off"
    ],
    "no-useless-concat": [
      "error"
    ],
    "no-useless-escape": [
      "error"
    ],
    "no-shadow-restricted-names": [
      "error"
    ],
    "no-use-before-define": [
      "error",
      {
        "functions": false
      }
    ],
    "arrow-parens": [
      "error",
      "always"
    ],
    "arrow-body-style": [
      "error",
      "as-needed"
    ],
    "arrow-spacing": [
      "error"
    ],
    "no-confusing-arrow": [
      "error",
      {
        "allowParens": true
      }
    ],
    "no-useless-computed-key": [
      "error"
    ],
    "no-useless-rename": [
      "error"
    ],
    "no-var": [
      "error"
    ],
    "object-shorthand": [
      "error",
      "always"
    ],
    "prefer-arrow-callback": [
      "error"
    ],
    "prefer-const": [
      "error"
    ],
    "prefer-numeric-literals": [
      "error"
    ],
    "prefer-rest-params": [
      "error"
    ],
    "prefer-spread": [
      "error"
    ],
    "rest-spread-spacing": [
      "error",
      "never"
    ],
    "template-curly-spacing": [
      "error",
      "never"
    ],
    "consistent-return": [
      "error",
      { "treatUndefinedAsUnspecified": true }
    ]
  }
}