.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "script"
  },
  "env": {
    "node": true,
    "mocha": true
  },
  "extends": ["eslint:recommended", "airbnb"],
  "rules": {
    "no-console": 0,

    // airbnb reset
    "prefer-template": 0,
    "func-names": 0,
    "padded-blocks": 0,
    "object-shorthand": 0,
    "no-unused-expressions": 0,
    "newline-per-chained-call": 0,
    "arrow-body-style": 0,
    "no-param-reassign": 0,
    "global-require": 0,
    "array-callback-return": 0,
    "no-multi-spaces": 0,
    "spaced-comment": 0,
    "no-shadow": 0,
    "no-underscore-dangle": 0,
    "camelcase": 0,
    "space-in-parens": 0,
    "no-restricted-syntax": 0,
    "import/no-unresolved": 0, // fails in Travis
    "prefer-rest-params": 0, // node 4.3 not supporting this,

    "no-unused-vars": [2, { "vars": "all", "args": "none" }],
    "max-len": [2, 256],
    "max-depth": [2, 2],
    "comma-dangle": [2, "always-multiline"],
    "strict": [2, "global"],
    "arrow-parens": [2, "as-needed"],

    "prefer-const": 2,
    "prefer-arrow-callback": 2,
    "arrow-spacing": 2,
    "no-confusing-arrow": 2,
    "consistent-return": 2,
    "no-else-return": 2,
    "no-lonely-if": 2,
    "no-return-assign": 2,
    "no-self-compare": 2,
    "no-use-before-define": 2,
    "no-extend-native": 2,
    "guard-for-in": 2,
    "no-var": 2,
    "radix": 2,
    "eol-last": 2,
    "no-caller": 2,
    "no-bitwise": 2
  }
}