.eslintrc.json

{
  "env": {
		"browser": true,
    "es6": true,
    "node": true,
		"jest": true
  },
  "parserOptions": {
		"ecmaFeatures": {
			"jsx": true
		},
		"ecmaVersion": 2017,
		"sourceType": "module"
  },
	"parser": "babel-eslint",
  "plugins": ["flowtype", "async-await"],
	"settings": {
		"polyfills": ["fetch"]
	},
  "rules": {
		"array-bracket-spacing": ["error", "never"],
		"array-callback-return": 2,
		"arrow-spacing": "error",
		"async-await/space-after-async": 2,
		"async-await/space-after-await": 2,
		"brace-style": ["error", "stroustrup"],
		"comma-dangle": ["error", "only-multiline"],
		"comma-spacing": ["error", {"before": false, "after": true}],
		"computed-property-spacing": ["error", "never"],
		"cond-assign": 0,
		"dot-notation": "error",
		"eqeqeq": "error",
		"generator-star-spacing": ["error", "before"],
		"indent": ["error", "tab"],
		"key-spacing": ["error", {"beforeColon": false, "afterColon": true}],
		"keyword-spacing": ["error", {"before": true}],
		"linebreak-style": ["error", "unix"],
		"max-len": [1, 100, 3],
		"named": 0,
		"no-array-constructor": 2,
		"no-console": ["warn", {"allow": ["warn", "error", "info"]}],
		"no-dupe-class-members": "error",
		"no-dupe-keys": 2,
		"no-else-return": "error",
		"no-empty": "error",
		"no-extra-parens": "error",
		"no-func-assign": "error",
		"no-label-var": "error",
		"no-lone-blocks": "error",
		"no-mixed-spaces-and-tabs": "error",
		"no-multi-spaces": "error",
		"no-multi-str": "error",
		"no-multiple-empty-lines": ["warn", {"max": 1, "maxBOF": 0, "maxEOF": 0}],
		"no-path-concat": "error",
		"no-redeclare": ["error", {"builtinGlobals": true}],
		"no-script-url": "error",
		"no-self-compare": "error",
		"no-shadow-restricted-names": "error",
		"no-shadow": ["error", {"allow": ["done"]}],
		"no-sync": ["error", {"allowAtRootLevel": true}],
		"no-trailing-spaces": "error",
		"no-undef": "error",
		"no-unreachable": "error",
		"no-unused-labels": "off",
		"no-unused-vars": ["error", { "ignoreRestSiblings": true }],
		"no-use-before-define": ["error", {"functions": false, "classes": false}],
		"no-useless-constructor": "error",
		"object-curly-spacing": ["error", "never"],
		"object-shorthand": ["error", "always"],
		"prefer-spread": "error",
		"prefer-template": 2,
		"quotes": ["error", "backtick", {"allowTemplateLiterals": true}],
		"radix": "error",
		"semi": ["error", "never"],
		"space-before-blocks": "error",
		"space-before-blocks": ["error", "always"],
		"space-before-function-paren": ["error", {"anonymous": "never", "named": "never", "asyncArrow": "always"}],
		"space-in-parens": ["error", "never"],
		"space-infix-ops": "error",
		"spaced-comment": ["error", "always"],
		"template-curly-spacing":  ["error", "never"],
		"use-isnan": "error",
		"valid-jsdoc": "error",
		"valid-typeof": "error"
  }
}