This is an ESLint config I'm using. I'll update and us it as a reference

.eslintrc

{
  "rules": {
    "quotes": [2, "single"],
    "linebreak-style": [2, "unix"],
    "semi": [2, "always"]
  },
  "env": {
      "es6": true,
      "node": true,
      "browser": true
  },
  "extends": "eslint:recommended",
  "ecmaFeatures": {
    "jsx": true,
    "experimentalObjectRestSpread": true
  },
  "plugins": [
    "react"
  ]
}