.eslintrc.json

{
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true
  },
  "extends": ["airbnb"],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true,
      "js": true
    },
    "ecmaVersion": 2018
  },
  "plugins": ["react"],
  "rules": {
    //  allow .js extensions for JSX.
    "react/jsx-filename-extension": [
      1,
      {
        "extensions": [".js", ".jsx"]
      }
    ],
    "quotes": [
      2,
      "single",
      {
        "avoidEscape": true, // allows strings to use single-quotes or double-quotes so long as the string contains a quote that would have to be escaped otherwise
        "allowTemplateLiterals": true // allows strings to use backticks
      }
    ]
  }
}