.eslintrc.json

{
	"root": true,
	"rules": {
		"indent": ["error", "tab", { "SwitchCase": 1 }],
		"semi": [2, "always"],
		"keyword-spacing": [2, { "before": true, "after": true }],
		"space-before-blocks": [2, "always"],
		"no-mixed-spaces-and-tabs": [2, "smart-tabs"],
		"no-cond-assign": 0,
		"no-unused-vars": 2,
		"object-shorthand": [2, "always"],
		"no-const-assign": 2,
		"no-class-assign": 2,
		"no-this-before-super": 2,
		"no-var": 2,
		"no-unreachable": 2,
		"valid-typeof": 2,
		"quote-props": [2, "as-needed"],
		"one-var": [2, "never"],
		"prefer-arrow-callback": 2,
		"prefer-const": [2, { "destructuring": "all" }],
		"arrow-spacing": 2,
		"no-inner-declarations": 0
	},

	"env": {
		"es6": true,
		"browser": true,
		"node": true,
		"jest": true
	},
	"extends": [
		"eslint:recommended",
		"plugin:import/errors",
		"plugin:import/warnings"
	],
	"plugins": ["import"],
	"parserOptions": {
		"ecmaVersion": 9,
		"sourceType": "module",
		"ecmaFeatures": {
			"experimentalObjectRestSpread": true
		}
	},
	"settings": {
		"import/resolver": {
			"node": {
				"extensions": [".js"]
			}
		}
	}
}