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QueryConstraint class

A QueryConstraint is used to narrow the set of documents returned by a Firestore query. QueryConstraints are created by invoking where(), orderBy(), startAt(), startAfter(), , endAt(), limit() or limitToLast() and can then be passed to query() to create a new query instance that also contains this QueryConstraint.

Signature:

export declare abstract class QueryConstraint 

Properties

Property	Modifiers	Type	Description
type		QueryConstraintType	The type of this query constraints