.eslintrc

{
  "parser": "babel-eslint",
  "extends": [
    "eslint:recommended",
    "plugin:promise/recommended",
    "plugin:jest/recommended",
    "plugin:react/recommended"
   ],
  "plugins": [
    "promise",
    "jest",
    "react"
  ],
  "parserOptions": {
    "sourceType": "module",
    "ecmaFeatures": {
      "modules": true,
      "classes": true
    }
  },
  "env": {
    "browser": true,
    "node": true,
    "es6": true,
    "jest": true
  },
  "rules": {
    "strict": ["error", "global"],
    "indent": ["warn", 2, {"SwitchCase": 1}],
    "linebreak-style": ["warn", "unix"],
    "quotes": ["warn", "single"],
    "semi": ["warn", "never"],
    "no-underscore-dangle": "off",
    "eqeqeq": "error",
    "no-eq-null": "error",
    "no-loop-func": "error",
    "no-duplicate-imports": "error",
    "no-param-reassign": "error",
    "prefer-const": ["error", {"destructuring": "all"}],
  }
}