.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },

  "globals": {
    "app": true,
    "fetch": true
  },

  "env": {
    "node": true,
    "es6": true
  },

  "extends": "eslint:recommended",

  "rules": {
    "indent": [1, 2],
    "array-bracket-spacing": [2, "never"],
    "block-scoped-var": 2,
    "brace-style": [2, "1tbs"],
    "computed-property-spacing": [2, "never"],
    "curly": 2,
    "eol-last": 2,
    "eqeqeq": [2, "smart"],
    "max-depth": [1, 3],
    "new-cap": 1,
    "no-extend-native": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-trailing-spaces": 1,
    "no-unused-vars": 1,
    "no-use-before-define": [2, "nofunc"],
    "object-curly-spacing": [2, "never"],
    "quotes": [1, "single", "avoid-escape"],
    "semi": [2, "always"],
    "keyword-spacing": [2, {"before": true, "after": true}],
    "space-unary-ops": 2,
    "no-console": [1, { allow: ["info", "warn", "error"] }],

    "max-len": [1, 120],
    "max-statements": [1, 50],

    "consistent-this": [2, "self"],
    "no-var": 2,
    "no-dupe-class-members": 2,
    "operator-linebreak": [1, "before"],
    "no-unneeded-ternary": [1, {"defaultAssignment": false}],
    "no-lonely-if": 1,
    "linebreak-style": [2, "unix"],
    "no-nested-ternary": 2,
    "require-yield": 2
  }
}