.eslintrc.json

{
  "extends": "airbnb",
  "parser": "babel-eslint",
  "rules": {
    "react/jsx-filename-extension": [1, { "extensions": [".js"] }],
    "react/jsx-props-no-spreading": 0
  },
  "overrides": [
    {
      "files": [
        "**/*.test.js"
      ],
      "env": {
        "jest": true
      },
      "plugins": ["jest"],
      "rules": {
        "jest/no-disabled-tests": "warn",
        "jest/no-focused-tests": "error",
        "jest/no-identical-title": "error",
        "jest/prefer-to-have-length": "warn",
        "jest/valid-expect": "error",
        "react/prop-types": [0]
      },
      "globals": {
        "window": true
      }
    }
  ]
}