.eslintrc

{
  "parser": "espree",
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true
     }
  },
  "env": {
    "es6": true,
    "browser": false,
    "node": true,
    "mocha": true
  },
  "globals": {
    "Promise": true,
    "Map": true
  },
  "root": true,
  "rules": {
    "array-bracket-spacing": [1, "never"],
    "arrow-body-style": [1, "as-needed"],
    "arrow-spacing": [1],
    "arrow-parens": [1, "as-needed"],
    "brace-style": [1, "1tbs", { "allowSingleLine": true }],
    "camelcase": [1],
    "callback-return": [1],
    "comma-dangle": [1, "always-multiline"],
    "comma-spacing": [1, {"before": false, "after": true}],
    "computed-property-spacing": [1, "never"],
    "curly": [1, "multi-line"],
    "dot-location": [1, "property"],
    "eol-last": [0],
    "func-style": [1, "declaration"],
    "generator-star-spacing": [1, {"before": false, "after": true}],
    "indent": [1, 2, {
      "MemberExpression": 0,
      "VariableDeclarator": {
        "var": 2,
        "let": 2,
        "const": 3
      },
      "SwitchCase": 1
    }],
    "key-spacing": [1, {"beforeColon": false, "afterColon": true}],
    "keyword-spacing": [1, {
      "after": true,
      "overrides": {
        "if": { "after": false},
        "switch": {"after": false},
        "for": {"after": false},
        "catch": {"after": false},
        "while": {"after": false}
      }
    }],
    "new-parens": [1],
    "no-const-assign": [2],
    "no-dupe-args": [2],
    "no-dupe-class-members": [2],
    "no-dupe-keys": [2],
    "no-duplicate-case": [2],
    "no-ex-assign": [2],
    "no-fallthrough": [2],
    "no-mixed-requires": [1, true],
    "no-multi-spaces": [0],
    "no-multiple-empty-lines": [1, {"max": 2}],
    "no-shadow": [0],
    "no-trailing-spaces": [1, {"skipBlankLines": true}],
    "no-undef": [1],
    "no-underscore-dangle": [0],
    "no-unneeded-ternary": [1],
    "no-unreachable": [2],
    "no-unused-vars": [1, {"vars": "local", "argsIgnorePattern": "log"}],
    "no-use-before-define": [2, "nofunc"],
    "no-var": [1],
    "object-curly-spacing": [1, "never"],
    "object-shorthand": [1, "always"],
    "prefer-arrow-callback": [1],
    "prefer-const": [1],
    "prefer-rest-params": [1],
    "prefer-spread": [1],
    "prefer-template": [1],
    "quotes": [1, "single", {"allowTemplateLiterals": true}],
    "require-await": [1],
    "require-yield": [1],
    "semi": [1, "always"],
    "space-before-blocks": [1],
    "space-before-function-paren": [1, {"anonymous": "never", "named": "never", "asyncArrow": "always"}],
    "space-infix-ops": [1],
    "strict": [1, "global"],
    "template-curly-spacing": [1, "never"],
    "valid-typeof": [2]
  }
}