.eslintrc

{
  "parser": "babel-eslint",
  "extends": "prettier",
  "env": {
    "browser": true,
    "mocha": true,
    "node": true,
    "jest": true
  },
  "rules": {
    "arrow-body-style": [
      "error",
      "as-needed",
      { "requireReturnForObjectLiteral": true }
    ],
    "comma-dangle": ["error", "always-multiline"],
    "consistent-return": 0,
    "import/extensions": 0,
    "import/no-unresolved": 0,
    "max-len": [2, 80, 4, { "ignoreUrls": true, "ignoreComments": true }],
    "no-case-declarations": 0,
    "no-confusing-arrow": 0,
    "no-return-assign": 0,
    "no-shadow": 0,
    "no-throw-literal": 0,
    "one-var": [0, { "uninitialized": "always", "initialized": "never" }],
    "one-var-declaration-per-line": 0,
    "prefer-const": 1,
    "react/jsx-filename-extension": 0,
    "space-before-function-paren": 0,
    "spaced-comment": 0
  },
  "parserOptions": {
    "ecmaFeatures": {
      "impliedStrict": true,
      "jsx": true,
      "experimentalObjectRestSpread": true
    },
    "ecmaVersion": 7,
    "sourceType": "module"
  }
}