.eslintrc

{
    "parserOptions": {
        "ecmaVersion": 2017,
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true,
            "jsx": true
        },
        "sourceType": "module"
    },

    "env": {
        "browser": true,
        "es6": true,
        "node": true
    },

    "plugins": [],

    "globals": {
        "window": true,
        "define": true,
        "process": true,
        "document": true,
        "navigator": true
    },

    "rules": {
        "accessor-pairs": "warn",
        "arrow-spacing": ["error", { "before": true, "after": true }],
        "block-spacing": ["error", "always"],
        "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
        "camelcase": ["warn", { "properties": "always" }],
        "comma-dangle": [
            "error",
            {
                "arrays": "never",
                "objects": "never",
                "imports": "never",
                "exports": "never",
                "functions": "never"
            }
        ],
        "comma-spacing": ["error", { "before": false, "after": true }],
        "comma-style": ["error", "last"],
        "constructor-super": "warn",
        "curly": ["error", "multi-line"],
        "dot-location": ["error", "property"],
        "eol-last": "warn",
        "eqeqeq": ["error", "always", { "null": "ignore" }],
        "func-call-spacing": ["error", "never"],
        "generator-star-spacing": ["error", { "before": true, "after": true }],
        "handle-callback-err": ["warn", "^(err|error)$"],
        "indent": ["error", "tab"],
        "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
        "keyword-spacing": ["error", { "before": true, "after": true }],
        "new-cap": ["error", { "newIsCap": true, "capIsNew": false }],
        "new-parens": "error",
        "no-array-constructor": "error",
        "no-caller": "error",
        "no-class-assign": "error",
        "no-compare-neg-zero": "error",
        "no-cond-assign": "error",
        "no-const-assign": "error",
        "no-constant-condition": ["error", { "checkLoops": false }],
        "no-control-regex": "error",
        "no-debugger": "error",
        "no-delete-var": "error",
        "no-dupe-args": "error",
        "no-dupe-class-members": "error",
        "no-dupe-keys": "error",
        "no-duplicate-case": "error",
        "no-duplicate-imports": "error",
        "no-empty-character-class": "error",
        "no-empty-pattern": "error",
        "no-eval": "error",
        "no-ex-assign": "error",
        "no-extend-native": "warn",
        "no-extra-bind": "error",
        "no-extra-boolean-cast": "warn",
        "no-extra-parens": ["error", "functions"],
        "no-fallthrough": "warn",
        "no-floating-decimal": "error",
        "no-func-assign": "error",
        "no-global-assign": "error",
        "no-implied-eval": "error",
        "no-inner-declarations": ["error", "functions"],
        "no-invalid-regexp": "error",
        "no-irregular-whitespace": "error",
        "no-iterator": "error",
        "no-label-var": "error",
        "no-labels": ["error", { "allowLoop": false, "allowSwitch": false }],
        "no-lone-blocks": "error",
        "no-mixed-operators": [
            "error",
            {
                "groups": [
                    ["==", "!=", "===", "!==", ">", ">=", "<", "<="],
                    ["&&", "||"],
                    ["in", "instanceof"]
                ],
                "allowSamePrecedence": true
            }
        ],
        "no-mixed-spaces-and-tabs": "error",
        "no-multi-spaces": "error",
        "no-multi-str": "error",
        "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 1 }],
        "no-new": "error",
        "no-new-func": "error",
        "no-new-object": "error",
        "no-new-require": "error",
        "no-new-symbol": "error",
        "no-new-wrappers": "error",
        "no-obj-calls": "error",
        "no-octal": "error",
        "no-octal-escape": "error",
        "no-path-concat": "error",
        "no-proto": "error",
        "no-redeclare": "error",
        "no-regex-spaces": "warn",
        "no-return-assign": ["error", "except-parens"],
        "no-return-await": "error",
        "no-self-assign": "error",
        "no-self-compare": "error",
        "no-sequences": "error",
        "no-shadow-restricted-names": "error",
        "no-sparse-arrays": "error",
        "no-tabs": "off",
        "no-template-curly-in-string": "error",
        "no-this-before-super": "error",
        "no-throw-literal": "error",
        "no-trailing-spaces": "error",
        "no-undef": "error",
        "no-undef-init": "error",
        "no-unexpected-multiline": "warn",
        "no-unmodified-loop-condition": "error",
        "no-unneeded-ternary": ["error", { "defaultAssignment": false }],
        "no-unreachable": "error",
        "no-unsafe-finally": "error",
        "no-unsafe-negation": "error",
        "no-unused-expressions": [
            "error",
            {
                "allowShortCircuit": true,
                "allowTernary": true,
                "allowTaggedTemplates": true
            }
        ],
        "no-unused-vars": [
            "error",
            { "vars": "all", "args": "none", "ignoreRestSiblings": true }
        ],
        "no-use-before-define": [
            "error",
            { "functions": true, "classes": true, "variables": true }
        ],
        "no-useless-call": "error",
        "no-useless-computed-key": "error",
        "no-useless-constructor": "error",
        "no-useless-escape": "error",
        "no-useless-rename": "error",
        "no-useless-return": "error",
        "no-whitespace-before-property": "error",
        "no-with": "error",
        "object-property-newline": [
            "error",
            { "allowMultiplePropertiesPerLine": true }
        ],
        "one-var": ["error", { "initialized": "never" }],
        "operator-linebreak": [
            "error",
            "after",
            { "overrides": { "?": "before", ":": "before" } }
        ],
        "padded-blocks": [
            "error",
            { "blocks": "always", "switches": "always", "classes": "always" }
        ],
        "prefer-promise-reject-errors": "error",
        "quotes": [
            "error",
            "single",
            { "avoidEscape": true, "allowTemplateLiterals": true }
        ],
        "rest-spread-spacing": ["error", "never"],
        "semi": ["warn", "never"],
        "semi-spacing": ["error", { "before": false, "after": true }],
        "space-before-blocks": ["error", "always"],
        "space-before-function-paren": ["error", "always"],
        "space-in-parens": ["error", "always"],
        "space-infix-ops": "error",
        "space-unary-ops": ["error", { "words": true, "nonwords": false }],
        "spaced-comment": [
            "error",
            "always",
            {
                "line": { "markers": ["*package", "!", "/", ",", "="] },
                "block": {
                    "balanced": true,
                    "markers": [
                        "*package",
                        "!",
                        ",",
                        ":",
                        "::",
                        "flow-include"
                    ],
                    "exceptions": ["*"]
                }
            }
        ],
        "symbol-description": "error",
        "template-curly-spacing": ["error", "never"],
        "template-tag-spacing": ["error", "never"],
        "unicode-bom": ["error", "never"],
        "use-isnan": "error",
        "valid-typeof": ["error", { "requireStringLiterals": true }],
        "wrap-iife": ["error", "any", { "functionPrototypeMethods": true }],
        "yield-star-spacing": ["error", "both"],
        "yoda": ["error", "never"]
    }
}