What an upstream IdP asserted, keyed by provider name and shallow-copied from
the mapClaims return so a later mutation by the adapter cannot reach a
stored session.
The index signature carries no guarantee that a given provider is present. A
session created by the federation callback holds the single provider that
authenticated it; the shape is a map so that a consumer merging claims across
providers has somewhere to put them, not because one session accumulates
several.
What an upstream IdP asserted, keyed by provider name and shallow-copied from the
mapClaimsreturn so a later mutation by the adapter cannot reach a stored session.The index signature carries no guarantee that a given provider is present. A session created by the federation callback holds the single provider that authenticated it; the shape is a map so that a consumer merging claims across providers has somewhere to put them, not because one session accumulates several.