ReadonlytypeOptional Readonlyhashsign: the hash asked for.
Optional ReadonlyalgorithmsThe algorithms the page accepted, when it restricted them.
Optional Readonlycertificatesign: the preselected certificate's fingerprint.
Optional Readonlydigestsign: the digest that was signed, once signed.
Optional ReadonlycancelledThe page cancelled it (AbortSignal, or prepare threw).
A request the page made, as the fake saw it: assert on these in your tests.
Example