.eslintrc.json

{
  "ecmaFeatures": {
    "modules": true
  },
  "parserOptions": {
    "sourceType": "module"
  },
  "env": {
    "es6": true,
    "browser": true,
    "node": true,
    "jasmine": true,
    "es6": true
  },
  "globals": {
    "require": true,
    "creditcard": true,
    "CREDIT_CARDS": true,
    "INVALID_CREDIT_CARD": true,
    "VALID_CREDIT_CARD": true,
    "luhn": true,
    "list": true
  },
  "rules": {
    "camelcase": 2,
    "comma-dangle": [2, "never"],
    "comma-spacing": 2,
    "comma-style": [2, "last"],
    "eol-last": 2,
    "eqeqeq": 2,
    "indent": [2, 2],
    "linebreak-style": [2, "unix"],
    "max-nested-callbacks": [2, 3],
    "no-dupe-keys": 2,
    "no-eq-null": 2,
    "no-extra-semi": 2,
    "no-lonely-if": 2,
    "no-multi-spaces": 0,
    "no-multiple-empty-lines": [2, {"max": 2}],
    "no-nested-ternary": 2,
    "no-param-reassign": 2,
    "no-self-compare": 2,
    "no-throw-literal": 2,
    "no-trailing-spaces": 2,
    "no-undef": 2,
    "no-underscore-dangle": 0,
    "no-void": 2,
    "one-var": [2, "never"],
    "quotes": [2, "single"],
    "semi": [2, "always"],
    "keyword-spacing": 2,
    "space-before-function-paren": [2, "never"],
    "space-in-parens": [2, "never"]
  }
}