# E0170: "global-groups" entries must be strings

In a quick-lint-js configuration file, items in the `"global-groups"` array must be strings. It is an error if an item is an array, a boolean, a number, an object, or `null`:

    {
        "global-groups": [
            "ecmascript",
            2020,
            "browser"
        ]
    }

To fix this error, remove non-string items in `"global-groups"`:

    {
        "global-groups": [
            "ecmascript",
            "browser"
        ]
    }

Introduced in quick-lint-js version 0.4.0.

Documentation for other errors