What to use as PurgeCSS extractor for Tailwind 3?

Question

What to use as PurgeCSS extractor for Tailwind 3?

With Tailwind 2 we could have used a default extractor that they made available in an internal file, but it was not a public API and in fact it is gone now: https://github.com/tailwindlabs/tailwindcss/discussions/6162.

What to do with Tailwind 3?

Using extractor copied from Tailwind internals changes code from this:

*,
:after,
:before {
    border: 0 solid;
    box-sizing: border-box;
}
:after,
:before {
    --tw-content: "";
}

to this

* {
    border: 0 solid;
    box-sizing: border-box;
}

which is totally wrong (especially for Tailwind 3).