QueryFieldFilterConstraint
A QueryFieldFilterConstraint
is used to narrow the set of documents returned by
a Firestore query by filtering on one or more document fields.
QueryFieldFilterConstraint
s are created by invoking where and can then
be passed to {@link (query:1)} to create a new query instance that also contains
this QueryFieldFilterConstraint
.
class QueryFieldFilterConstraint extends QueryConstraint {}
readonly type: string;