.eslintrc.json

{
    "root": true,
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 8,
        "sourceType": "module"
    },
    "env": {
        "es2017": true,
        "node": true
    },
    "rules": {
        "arrow-parens": ["error", "always"],
        "comma-dangle": ["error", "never"],
        "curly": ["error", "all"],
        "dot-notation": "error",
        "eqeqeq": "error",
        "func-names": ["error", "always"],
        "guard-for-in": "error",
        "no-case-declarations": "error",
        "no-const-assign": "error",
        "no-constant-condition": "off",
        "no-global-assign": "error",
        "no-param-reassign": "off",
        "no-prototype-builtins": "error",
        "no-shadow": ["error", {"builtinGlobals": false}],
        "no-undef": "error",
        "no-unneeded-ternary": "error",
        "no-unused-vars": ["error", {"vars": "local", "args": "after-used", "argsIgnorePattern": "^_", "caughtErrors": "none"}],
        "no-unused-expressions": "error",
        "no-var": "error",
        "prefer-const": ["error", {"destructuring": "all"}],
        "quote-props": ["error", "consistent"],
        "quotes": ["error", "single", "avoid-escape"],
        "require-atomic-updates": "off",
        "semi": "error",

        // Whitespace rules
        "brace-style": ["error", "1tbs", {"allowSingleLine": true}],
        "indent": ["error", 4, {"SwitchCase": 1, "MemberExpression": 1, "flatTernaryExpressions": true, "ignoredNodes": ["ConditionalExpression"]}],
        "object-curly-newline": "error",
        "padded-blocks": ["error", "never"],

        "array-bracket-spacing": ["error", "never"],
        "arrow-spacing": ["error", {"before": true, "after": true}],
        "block-spacing": ["error", "always"],
        "comma-spacing": ["error", { "before": false, "after": true }],
        "computed-property-spacing": ["error", "never"],
        "func-call-spacing": ["error", "never"],
        "generator-star-spacing": ["error", "before"],
        "key-spacing": ["error", {"beforeColon": false, "afterColon": true, "mode": "strict"}],
        "keyword-spacing": ["error", {"before": true, "after": true}],
        "no-trailing-spaces": "error",
        "no-whitespace-before-property": "error",
        "object-curly-spacing": ["error", "never"],
        "rest-spread-spacing": ["error", "never"],
        "semi-spacing": ["error", {"before": false, "after": true}],
        "space-in-parens": ["error", "never"],
        "space-unary-ops": "error",
        "spaced-comment": ["error", "always", {"markers": ["global"]}],
        "switch-colon-spacing": ["error", {"after": true, "before": false}],
        "template-curly-spacing": ["error", "never"],
        "template-tag-spacing": ["error", "never"]
    }
}