Maps to the FlatGeobuf column types: numeric types → number,
string/json/datetime → string, bool → boolean, binary → Uint8Array.
64-bit integers (Long/ULong) outside the safe-integer range decode to
bigint so they survive to the tile exactly. Nullable columns may
produce null.
A property value decoded from an FGB feature.
Maps to the FlatGeobuf column types: numeric types →
number, string/json/datetime →string, bool →boolean, binary →Uint8Array. 64-bit integers (Long/ULong) outside the safe-integer range decode tobigintso they survive to the tile exactly. Nullable columns may producenull.