.eslintrc.json

{
  "env": {
    "es6": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "rules": {
    "arrow-spacing": 2,
    "array-bracket-spacing": [2, "never", { "arraysInArrays": true }],
    "block-spacing": 2,
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "comma-dangle": [2, "always-multiline"],
    "comma-spacing": [2, { "before": false, "after": true }],
    "eol-last": [2, "always"],
    "indent": [2, "tab", { "SwitchCase": 1 }],
    "key-spacing": 2,
    "keyword-spacing": 2,
    "no-cond-assign": 2,
    "no-const-assign": 2,
    "no-trailing-spaces": 2,
    "no-mixed-spaces-and-tabs": [2, "smart-tabs"],
    "no-var": 2,
    "object-curly-spacing": [2, "always"],
    "object-shorthand":  [2, "always"],
    "semi": [2, "never"],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, "always"],
    "space-in-parens": [2, "never"],
    "quote-props": [2, "as-needed"],
    "quotes": [2, "single"]
  }
}