.eslintrc.json

{
    "parserOptions": {
        "ecmaVersion": 9,
        "sourceType": "script",
        "ecmaFeatures": {}
    },
    "rules": {
        "semi": "error",
        "indent": [ "error", "tab", { "MemberExpression": 0, "SwitchCase": 1 } ],
        "array-bracket-spacing": [ "error", "always" ],
        "object-curly-spacing": [ "error", "always" ],
        "comma-dangle": [ "error", "never" ],
        "comma-spacing": "error",
        "max-depth": [ "error", 3 ],
        "yoda": "error",
        "quotes": [ "error", "single" ],
        "curly": [ "error", "all" ],
        "eqeqeq": "error",
        "no-var": "error",
        "prefer-const": "error",
        "padding-line-between-statements": [
            "error",
            { "blankLine": "never", "prev": "*", "next": "break" },
            { "blankLine": "never", "prev": "*", "next": "return" }
        ],
        "prefer-arrow-callback": "error",
        "prefer-spread": "error",
        "prefer-destructuring": "error",
        "padded-blocks": [ "error", "never" ],
        "arrow-body-style": [ "error", "as-needed" ],
        "arrow-parens": [ "error", "as-needed" ],
        "eol-last": "error",
        "multiline-ternary": [ "error", "never" ],
        "constructor-super": "error",
        "for-direction": "error",
        "getter-return": "error",
        "no-async-promise-executor": "error",
        "no-case-declarations": "error",
        "no-class-assign": "error",
        "no-compare-neg-zero": "error",
        "no-cond-assign": "error",
        "no-const-assign": "error",
        "no-constant-condition": "error",
        "no-control-regex": "error",
        "no-debugger": "error",
        "no-delete-var": "error",
        "no-dupe-args": "error",
        "no-dupe-class-members": "error",
        "no-dupe-else-if": "error",
        "no-dupe-keys": "error",
        "no-duplicate-case": "error",
        "no-empty": [ "error", { "allowEmptyCatch": true } ],
        "no-empty-character-class": "error",
        "no-empty-pattern": "error",
        "no-ex-assign": "error",
        "no-extra-boolean-cast": "error",
        "no-extra-semi": "error",
        "no-fallthrough": "error",
        "no-func-assign": "error",
        "no-global-assign": "error",
        "no-import-assign": "error",
        "no-inner-declarations": "error",
        "no-invalid-regexp": "error",
        "no-irregular-whitespace": "error",
        "no-misleading-character-class": "error",
        "no-mixed-spaces-and-tabs": "error",
        "no-new-symbol": "error",
        "no-obj-calls": "error",
        "no-octal": "error",
        "no-prototype-builtins": "error",
        "no-redeclare": "error",
        "no-regex-spaces": "error",
        "no-self-assign": "error",
        "no-setter-return": "error",
        "no-shadow-restricted-names": "error",
        "no-sparse-arrays": "error",
        "no-this-before-super": "error",
        "no-undef": "error",
        "no-unexpected-multiline": "error",
        "no-unreachable": "error",
        "no-unsafe-finally": "error",
        "no-unsafe-negation": "error",
        "no-unused-labels": "error",
        "no-unused-vars": [ "error", { "args": "after-used", "argsIgnorePattern": "^_" } ],
        "no-useless-catch": "error",
        "no-useless-escape": "error",
        "no-with": "error",
        "require-yield": "error",
        "use-isnan": "error",
        "valid-typeof": "error"
    },
    "env": {
        "node": true,
        "browser": true,
        "commonjs": true,
        "es6": true,
        "es2017": true,
        "mocha": true
    }
}