How can I disable document.body checks?

[rik]

Merely using document.body in our codebase results in the following error:

document.body() is not supported in Firefox 44

(Firefox 44 is the first version of Firefox that our browserlist query matches)

We'd like to disable this check globally (at least until the underlying MDN data is improved). We've tried many variations of polyfill names but none of them worked.

    "settings": {
        "polyfills": [
            "document.body",
            "body",
            "document.prototype.body",
            "document_body",
            "mdn-api_document_body"
        ]
    },

Thanks for your help!