Read by D1Adapter's constructor, so an absent binding — a name
typo, a missing d1_databases stanza, a preview environment that was never
given the database — fails where the adapter is built, naming what is wrong,
rather than at the first query with a bare TypeError.
Reports whether a binding is D1-shaped.
Read by
D1Adapter's constructor, so an absent binding — a name typo, a missingd1_databasesstanza, a preview environment that was never given the database — fails where the adapter is built, naming what is wrong, rather than at the first query with a bareTypeError.