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Mark Firebase’s previousChildName as optional since it will be null for the first item

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Collin Jackson 2016-01-27 16:14:38 -08:00
parent 4907b64263
commit bada290904
1 changed files with 3 additions and 3 deletions
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6
sky/services/firebase/firebase.mojom
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@ -36,9 +36,9 @@ interface ValueEventListener {
interface ChildEventListener {
OnCancelled(Error error);
OnChildAdded(DataSnapshot snapshot, string previousChildName);
OnChildChanged(DataSnapshot snapshot, string previousChildName);
OnChildMoved(DataSnapshot snapshot, string previousChildName);
OnChildAdded(DataSnapshot snapshot, string? previousChildName);
OnChildChanged(DataSnapshot snapshot, string? previousChildName);
OnChildMoved(DataSnapshot snapshot, string? previousChildName);
OnChildRemoved(DataSnapshot snapshot);
};