.eslintrc

{
  "env": {
    "node": true,
    "mocha": true
  },
  "extends": [
    "airbnb-base",
    "eslint:recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },
  "plugins": [
    "promise"
  ],
  "rules": {
    "arrow-body-style": [2, "always"],
    "array-bracket-spacing": [2, "always", {
      "arraysInArrays": false,
      "objectsInArrays": false,
      "singleValue": true
    }],
    "arrow-parens": [2, "always"],
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "comma-style": [2, "last"],
    "curly": [2, "all"],
    "func-names": [ 2, "as-needed" ],
    "function-paren-newline": [2, "consistent"],
    "import/no-extraneous-dependencies": [2, { "devDependencies": true }],
    "indent": [2, 2, { "SwitchCase": 1 }],
    "keyword-spacing": [2, { "after": true, "before": true }],
    "linebreak-style": [2, "unix"],
    "max-len": [2, 100, {
      "ignoreUrls": true,
      "ignoreComments": true,
      "ignoreStrings": true,
      "ignoreTemplateLiterals": true
    }],
    "new-cap": [0],
    "newline-per-chained-call": [2, { "ignoreChainWithDepth": 10 }],
    "no-multiple-empty-lines": [2, { "max": 1 }],
    "no-multi-spaces": [2],
    "no-nested-ternary": [0],
    "no-tabs": [2],
    "no-trailing-spaces": [2],
    "no-param-reassign": [2, { "props": false }],
    "no-underscore-dangle": [0],
    "no-unused-vars": [2, {
      "argsIgnorePattern": "^_",
      "varsIgnorePattern": "^_"
    }],
    "no-use-before-define": [2, "nofunc"],
    "no-var": [2],
    "object-curly-spacing": [2, "always"],
    "one-var": [2, {
      const: "never",
      let: "never",
      var: "never"
    }],
    "padded-blocks": [2, "never"],
    "promise/no-return-in-finally": [2],
    "promise/no-return-wrap": [2],
    "promise/param-names": [2],
    "quotes": [2, "single"],
    "semi": [2, "always"],
    "spaced-comment": [2, "always"],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, {
      "anonymous": "always",
      "named": "never"
    }]
  }
}