.eslintrc

{
  "root": true,
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true,
    "jest": true
  },
  "extends": [
    "eslint:recommended"
  ],
  "parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 7,
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "rules": {
    "brace-style": "error",
    "camelcase": [
      "error",
      {
        "properties": "never"
      }
    ],
    "func-call-spacing": [
      "error",
      "never"
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true
      }
    ],
    "space-infix-ops": [
      "error",
      {
        "int32Hint": false
      }
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "eqeqeq": "warn",
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "key-spacing": [
      "error",
      {
        "beforeColon": false
      }
    ],
    "no-console": "off",
    "no-fallthrough": "warn",
    "prefer-const": "error",
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "never"
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "never",
        "objects": "always-multiline",
        "imports": "never",
        "exports": "never",
        "functions": "never"
      }
    ]
  }
}