.eslintrc.json

{
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 8,
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "env": {
        "browser": true,
        "node": true,
        "mocha": true,
        "jest": true,
        "es6": true
    },
    "rules": {
        "no-constant-condition": ["error", { "checkLoops": false }],
        "array-callback-return": ["error", { "allowImplicit": true }],
        "default-case": ["warn"],
        "dot-notation": ["off"],
        "no-else-return": ["error", { "allowElseIf": false}],
        "no-fallthrough": ["warn"],
        "no-multi-spaces": ["error", { "ignoreEOLComments": true, "exceptions": { "VariableDeclarator": true, "ImportDeclaration": true, "Property": true } }],
        "no-param-reassign": ["warn"],
        "no-proto": ["error"],
        "no-with": ["error"],
        "global-require": "error",
        "no-buffer-constructor": ["error"],
        "no-path-concat": ["error"],
        "no-duplicate-imports": ["error"],
        "eol-last": ["error", "always"],
        "comma-spacing": ["error", { "before": false, "after": true }],
        "comma-dangle": ["error", "always-multiline"],
        "arrow-body-style": ["warn", "as-needed"],
        "no-plusplus": ["off"],
        "indent": ["error", 4, { "SwitchCase": 1 }],
        "no-unused-vars": ["error", { "args": "none" }],
        "no-restricted-syntax": ["error", "DebuggerStatement", "LabeledStatement", "WithStatement"],
        "block-spacing": ["error"],
        "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
        "no-trailing-spaces": "error",
        "quotes": ["error", "single"],
        "no-var": ["error"],
        "prefer-const": "error",
        "prefer-destructuring": ["warn", { "object": true }],
        "prefer-rest-params": ["error"]
    }
}