設定

.babelrc

{
  "presets": [
    [
      "env",
      {
        "targets": {
          "node": "6.10",
          "browsers": [
            "last 2 versions",
            "ie 10"
          ]
        }
      }
    ],
    "react"
  ]
}

.eslintrc

{
  "extends": "eslint:recommended",
  "parser": "babel-eslint",
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "parserOptions": {
    "sourceType": "module",
    "ecmaFeatures": {
      "classes": true,
      "jsx": true
    }
  },
  "plugins": [
    "prettier",
    "react"
  ],
  "ecmaFeatures": {
    "modules": true,
    "classes": true
  },
  "rules": {
    "prettier/prettier": [
      "error",
      {
        "trailingComma": true,
        "singleQuote": false,
        "semi": false
      }
    ],
    "react/jsx-uses-react": "error",
    "react/jsx-uses-vars": "error",
    "quotes": [
      "error",
      "double",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "semi": [
      "error",
      "never"
    ],
    "eqeqeq": "error",
    "dot-location": [
      "error",
      "property"
    ],
    "no-var": "error",
    "prefer-const": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "no-console": "off",
    "no-undefined": "error",
    "no-extra-label": "error",
    "dot-notation": "error",
    "no-extra-bind": "error",
    "no-multi-spaces": "error",
    "no-useless-return": "error",
    "no-floating-decimal": "error",
    "no-implicit-coercion": "error",
    "wrap-iife": "error",
    "no-lonely-if": "error",
    "yoda": [
      "error",
      "never",
      {
        "exceptRange": true
      }
    ]
  }
}