.eslintrc.json

{
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended"
  ],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "jsx": true
    },
    "sourceType": "module"
  },
  "plugins": [
    "react"
  ],
  "rules": {
    "react/prop-types": "off",
    "indent": [
      "error",
      2
    ],
    "linebreak-style": "off",
    "eqeqeq": "error",
    "no-var": "error",
    "radix": "error",
    "prefer-template": "error",
    "prefer-const": "error",
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "arrow-body-style": [
      "error",
      "as-needed"
    ],
    "arrow-parens": [
      "error",
      "as-needed"
    ],
    "comma-dangle": [
      "error",
      "always-multiline"
    ],
    "quotes": "error",
    "jsx-quotes": "error",
    "semi": "error",
    "curly": "error",
    "no-trailing-spaces": "error",
    "camelcase": "error",
    "eol-last": "error",
    // spacing
    "array-bracket-spacing": "error",
    "arrow-spacing": "error",
    "block-spacing": "error",
    "comma-spacing": "error",
    "computed-property-spacing": "error",
    "func-call-spacing": "error",
    "key-spacing": "error",
    "keyword-spacing": "error",
    "object-curly-spacing": "error",
    "semi-spacing": "error",
    "space-before-blocks": "error",
    "space-before-function-paren": [
      "error",
      "never"
    ],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "space-unary-ops": "error",
    "spaced-comment": "error"
  }
}