.eslintrc.json

{
  "parser": "babel-eslint",
  "extends": [
    "airbnb",
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:promise/recommended",
    "plugin:unicorn/recommended",
    "prettier",
    "prettier/react"
  ],
  "plugins": ["react", "promise", "unicorn", "prettier"],
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "env": {
    "browser": true,
    "es6": true
  },
  "globals": {
    "spyOn": true
  },
  "rules": {
    "prettier/prettier": "error",
    // Too restrictive, writing ugly code to defend against a very unlikely scenario: https://eslint.org/docs/rules/no-prototype-builtins
    "no-prototype-builtins": "off",
    // https://basarat.gitbooks.io/typescript/docs/tips/defaultIsBad.html
    "import/prefer-default-export": "off",
    "import/no-default-export": "off",
    // Too restrictive: https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/destructuring-assignment.md
    "react/destructuring-assignment": "off",
    // No jsx extension: https://github.com/facebook/create-react-app/issues/87#issuecomment-234627904
    "react/jsx-filename-extension": "off",
    // Use function hoisting to improve code readability
    "no-use-before-define": [
      "error",
      {
        "functions": false,
        "classes": true,
        "variables": true
      }
    ],
    // Common abbreviations are known and readable
    "unicorn/prevent-abbreviations": "off",
    "unicorn/filename-case": "off",
    "no-console": "off",
    "no-plusplus": "off",
    "react/prop-types": [
      "error",
      {
        "ignore": ["children"]
      }
    ]
  }
}