CheckConstraintNode
interface CheckConstraintNode  extends OperationNode {
readonly expression: OperationNode;
readonly kind: "CheckConstraintNode";
readonly name?: IdentifierNode;
}const CheckConstraintNode: Readonly<{
is(node: OperationNode): node is CheckConstraintNode; 
create(expression: OperationNode, constraintName?: string): CheckConstraintNode; 
}>;