.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "jest/globals": true
  },
  "extends": [
    "plugin:react/recommended",
    "plugin:jest/all",
    "airbnb"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "ignorePatterns": [
    "build/*",
    "dist/*"
  ],
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "parser": "babel-eslint",
  "plugins": [
    "react",
    "jest"
  ],
  "rules": {
    "max-len": ["error", { "code": 150 }],
    "react/jsx-filename-extension": ["error", { "extensions": [".js", ".jsx"] }],
    "linebreak-style": 0,
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
    "jest/no-large-snapshots": ["warn", { "maxSize": 500, "inlineMaxSize": 500 }],
    "import/no-extraneous-dependencies": ["error", {"devDependencies": true}],
    "react/forbid-prop-types": 0
  }
}