firebase: Use collapse key

1 files changed, 4 insertions, 1 deletions

diff --git a/firebase-io/firebase-io.js b/firebase-io/firebase-io.js
index 9c96224..8ace07c 100755
--- a/firebase-io/firebase-io.js
+++ b/firebase-io/firebase-io.js
@@ -93,7 +93,10 @@ function processMessage(type,fields){
 					message: message,
 				}
 			};
-			firebase.messaging().sendToDevice(token,payload)
+			const options={
+				collapseKey: "tomsg-collapseKey",
+			};
+			firebase.messaging().sendToDevice(token,payload,options)
 				.then((response)=>{
 					const result=response.results[0];
 					const realToken=result.canonicalRegistrationToken;