.eslintrc.json

{
  "env": {
    "es6": true,
    "node": true,
    "mocha": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "rules": {
    "max-len": [
      "error",
      130
    ],
    "space-before-blocks": [
      "error"
    ],
    "space-infix-ops": [
      "error",
      {
        "int32Hint": false
      }
    ],
    "eol-last": [
      "error",
      "always"
    ],
    "no-trailing-spaces": [
      "error",
      {
        "ignoreComments": true
      }
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
        "error",
        "never"
    ],
    "keyword-spacing": [2, {"before": true, "after": true}],
    "object-curly-spacing": ["error", "always"],
    "comma-spacing": ["error"],
    "key-spacing": ["error"],
    "space-before-function-paren": ["error", {"anonymous": "always", "named": "never"}],
    "no-useless-catch": ["off"],
    "no-async-promise-executor": ["off"],
    "require-atomic-updates": ["off"]
  }
}