.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType" : "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "arrowFunctions": true,
      "classes": true,
      "restParams": true,
      "spread": true
    }
  },

  "rules": {
    "space-before-function-paren": ["error", {
        "anonymous": "always",
        "named": "never",
        "asyncArrow": "ignore"
    }],
    "generator-star-spacing": [2, "before"], // enforce the spacing around the * in generator functions (off by default)
    "keyword-spacing": ["error", { "before" : true, "after" : true }], // require a space after return, throw, and case
    "no-extra-semi" : ["error"],
    "no-unused-vars" : ["error"],
    "semi" : ["error"],
    "space-infix-ops": ["error", { "int32Hint" : true }], // require spaces around operators
  }
}