.eslintrc

{
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 8,
    "sourceType": "module",
    "ecmaFeatures": {
      "classes": true,
      "experimentalObjectRestSpread": true,
      "jsx": true
    }
  },
  "extends": [
    "plugin:react/recommended"
  ],
  "rules": {
    "no-duplicate-imports": ["error", {
        "includeExports": true
      }
    ],
    "rest-spread-spacing": ["error", "never"],
    "semi": ["error", "always"],
    "quotes": ["error", "single"],
    "jsx-quotes": ["error", "prefer-double"],
    "prefer-spread": ["error"],
    "no-useless-call": ["error"],
    "no-trailing-spaces": ["error"],
    "space-before-blocks": ["error", "always"],
    "no-unused-vars": ["error"],
    "no-floating-decimal": ["error"],
    "comma-dangle": ["error", "never"],
    "array-bracket-spacing": ["error", "never"],
    "object-curly-spacing": ["error", "always"],
    "switch-colon-spacing": ["error", {
      "after": true,
      "before": false
    }],
    "space-unary-ops": ["error", {
      "words": true,
      "nonwords": false
    }],
    "space-before-function-paren": ["error", {
        "anonymous": "always",
        "named": "always",
        "asyncArrow": "always"
    }],
    "keyword-spacing": ["error", {
      "before": true,
      "after": true
    }],
    "key-spacing": ["error", {
      "singleLine": {
        "beforeColon": false,
        "afterColon": true,
        "mode": "strict"
      },
      "multiLine": {
        "beforeColon": false,
        "afterColon": true,
        "mode": "strict"
      }
    }],
    "generator-star-spacing": ["error", {
      "before": false,
      "after": true
    }],
    "no-debugger": "warn",
    "no-console": "warn",
    "no-alert": "warn"
  }
}