.eslintrc.js

module.exports = {
  parser: "babel-eslint",
  env: {
    es6: true,
    node: true,
    browser: true,
  },
  parserOptions: {
    ecmaVersion: 6,
    sourceType: "module",
    ecmaFeatures: {
      jsx: true,
    },
  },
  plugins: ["react"],
  extends: [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:prettier/recommended",
    "react-app",
  ],
  settings: {
    react: {
      createClass: "createReactClass", // Regex for Component Factory to use,
      // default to "createReactClass"
      pragma: "React", // Pragma to use, default to "React"
      fragment: "Fragment", // Fragment to use (may be a property of <pragma>), default to "Fragment"
      version: "detect", // React version. "detect" automatically picks the version you have installed.
      // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
      // default to latest and warns if missing
      // It will default to "detect" in the future
      flowVersion: "0.53", // Flow version
    },
  },
  rules: {},
};