.eslintrc.json

{
  "extends": "airbnb",
  "env": {
    "browser": true,
    "es6": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "forOf": true,
      "jsx": true,
      "es6": true,
      "experimentalObjectRestSpread": true
    }
  },
  "plugins": [
    "react",
    "jsx-a11y"
  ],
  "rules": {
    "import/no-extraneous-dependencies": [
      2,
      {
        "devDependencies": [
          "**/*.spec.js", "**/config/*.js"
        ]
      }
    ],
    "indent": [
      2,
      2,
      { "SwitchCase": 1 }
    ],
    "linebreak-style": 0,
    "max-len": [
      1,
      80,
      4,
      {
        "ignoreUrls": true,
        "ignoreTemplateLiterals": true,
        "ignoreTrailingComments": true,
        "ignorePattern": "^(import.*|const\\s.*\\s=\\srequire.*)",
        "ignoreRegExpLiterals": true
      }
    ],
    "newline-after-var": 2,
    "no-plusplus": [
      2,
      {
        "allowForLoopAfterthoughts": true
      }
    ],
    "max-lines": [
      2,
      {
        "skipComments": true
      }
    ],
    "no-underscore-dangle": [
        0,
        { "allow": true }
    ],
    "one-var": [
        0,
        "always"
    ],
    "padded-blocks": 2,
    "quotes": [
      2,
      "single"
    ],
    "react/jsx-filename-extension": 0,
    "react/jsx-indent": [
      2,
      2
    ],
    "react/jsx-indent-props": [
      2,
      2
    ],
    "react/jsx-max-props-per-line": [
      2,
      { "when": "multiline" }
    ],
    "react/no-array-index-key": 0,
    "react/require-default-props": 0,
    "semi": [
      2,
      "always"
    ],
    "curly": [ 2, "all" ]
  },
  "globals": {
    "describe": true,
    "beforeEach": true,
    "expect": true,
    "it": true,
    "jest": true,
    "afterEach": true,
    "jasmine": true,
    "spyOn": true,
    "fail" : true
  }
}