Invalid refs (tempids) are transacted without error

[ash14]

Datascript (0.18.3) accepts transaction data that contain invalid refs:

(-> (d/empty-db {:x {:db/valueType :db.type/ref}})
    (d/with [[:db/add -1 :x "?"]]))

; =>
#datascript.db.TxReport
 {:db-before #datascript/DB
              {:schema {:x #:db{:valueType :db.type/ref}} :datoms []}
  :db-after #datascript/DB
             {:schema {:x #:db{:valueType :db.type/ref}}
              :datoms [[2 :x 1 536870913]]}
  :tx-data [#datascript/Datom [2 :x 1 536870913 true]]
  :tempids {"?" 1 -1 2 :db/current-tx 536870913}
  :tx-meta nil}

In a similar set up Datomic will throw ":db.error/tempid-not-an-entity tempid used only as value in transaction"

[tonsky]

Thanks! Might be worth fixing, yes