create .eslintrc file on root project dir and enable ESLint in IDE

.eslintrc

{
	"env": {
		"browser": true,
		"node": true,
		"es6": true
	},
	"globals": {
		"console": true,
		"db": true
	},
	"plugins": [
		"react"
	],
	"parserOptions": {
		"ecmaVersion": 6,
		"sourceType": "module",
		"ecmaFeatures": {
			"jsx": true
		}
	},
	"extends": "eslint:recommended",
	"rules": {
		// React & Jsx
		"react/jsx-uses-vars": 2,
		// Possible Errors
		"comma-dangle": [0, "always"],
		"no-cond-assign": 2,
		"no-console": 0,
		"no-constant-condition": 2,
		"no-control-regex": 2,
		"no-debugger": 2,
		"no-dupe-keys": 2,
		"no-empty": 2,
		"no-empty-character-class": 2,
		"no-ex-assign": 2,
		"no-extra-boolean-cast": 2,
		"no-extra-parens": 0,
		"no-extra-semi": 2,
		"no-func-assign": 2,
		"no-inner-declarations": 2,
		"no-invalid-regexp": 2,
		"no-irregular-whitespace": 2,
		"no-negated-in-lhs": 2,
		"no-obj-calls": 2,
		"no-regex-spaces": 2,
		"no-reserved-keys": 0,
		"no-sparse-arrays": 2,
		"no-unreachable": 2,
		"use-isnan": 2,
		"valid-jsdoc": 0,
		"valid-typeof": 2,
		// Best Practices
		"block-scoped-var": 2,
		"complexity": 0,
		"consistent-return": 2,
		"curly": 2,
		"default-case": 2,
		"dot-notation": 2,
		"eqeqeq": 2,
		"guard-for-in": 2,
		"no-alert": 0,
		"no-caller": 2,
		"no-div-regex": 2,
		"no-else-return": 2,
		"no-eq-null": 2,
		"no-eval": 2,
		"no-extend-native": 2,
		"no-extra-bind": 2,
		"no-fallthrough": 2,
		"no-floating-decimal": 2,
		"no-implied-eval": 2,
		"no-iterator": 2,
		"no-labels": 2,
		"no-lone-blocks": 2,
		"no-loop-func": 2,
		"no-multi-spaces": 2,
		"no-multi-str": 0,
		"no-native-reassign": 2,
		"no-new": 2,
		"no-new-func": 2,
		"no-new-wrappers": 2,
		"no-octal": 2,
		"no-octal-escape": 2,
		"no-process-env": 0,
		"no-proto": 2,
		"no-redeclare": 2,
		"no-return-assign": 0,
		"no-script-url": 2,
		"no-self-compare": 2,
		"no-sequences": 2,
		"no-unused-expressions": 2,
		"no-void": 0,
		"no-warning-comments": 2,
		"no-with": 2,
		"radix": 2,
		"vars-on-top": 0,
		"wrap-iife": 2,
		"yoda": 2,
		// Strict Mode
		"strict": [1, "global"],
		// Variables
		"no-catch-shadow": 2,
		"no-delete-var": 2,
		"no-label-var": 2,
		"no-shadow": 2,
		"no-shadow-restricted-names": 2,
		"no-undef": 2,
		"no-undef-init": 2,
		"no-undefined": 2,
		"no-unused-vars": 0,
		"no-use-before-define": 2,
		// Stylistic Issues
		"indent": [2, 2, {
			"SwitchCase": 1
		}],
		"brace-style": 2,
		"camelcase": 0,
		"comma-spacing": 2,
		"comma-style": 2,
		"consistent-this": 0,
		"eol-last": 2,
		"func-names": 0,
		"func-style": 0,
		"key-spacing": [2, {
			"beforeColon": false,
			"afterColon": true
		}],
		"max-nested-callbacks": 0,
		"new-cap": 0,
		"new-parens": 2,
		"no-array-constructor": 2,
		"no-inline-comments": 0,
		"no-lonely-if": 2,
		"no-mixed-spaces-and-tabs": 2,
		"no-nested-ternary": 1,
		"no-new-object": 2,
		"semi-spacing": [2, {
			"before": false,
			"after": true
		}],
		"no-spaced-func": 2,
		"no-ternary": 0,
		"no-trailing-spaces": 2,
		"no-multiple-empty-lines": 2,
		"no-underscore-dangle": 0,
		"one-var": 0,
		"operator-assignment": [2, "always"],
		"padded-blocks": 0,
		"quotes": [2, "single"],
		"quote-props": [2, "as-needed"],
		"semi": [2, "always"],
		"sort-vars": [2, {"ignoreCase": true}],
		"keyword-spacing": 2,
		"space-before-blocks": 2,
		"object-curly-spacing": [2, "never"],
		"array-bracket-spacing": [2, "never"],
		"space-in-parens": 2,
		"space-infix-ops": 2,
		"space-unary-ops": 2,
		"spaced-comment": 2,
		"wrap-regex": 0,
		// Legacy
		"max-depth": 0,
		"max-len": [2, 120],
		"max-params": 0,
		"max-statements": 0,
		"no-plusplus": 0
	}
}