added on nodes for rtdb and firestore andmade nodes pass through msg objects with as little changes as possible

firestore/firestore-get.js

@@ -1,5 +1,5 @@
 
-
+let msgin
 let unsub
 
 module.exports = function(RED) {
@@ -16,7 +16,7 @@ module.exports = function(RED) {
       if(unsub){
         unsub()
       }
-      this.admin.firestore().doc(path).onSnapshot(cb)
+      this.admin.firestore().doc(path).get().then(cb)
     }
 
     const cb = (res)=>{
@@ -24,11 +24,17 @@ module.exports = function(RED) {
       console.dir(res)
       let val = res.data()
       console.log('val='+val)
-      node.send({payload:val})
+      if(msgin){
+        msgin.payload = val
+        node.send(msgin)
+      } else {
+        node.send({payload: val})
+      }
     }
 
     node.on('input', function(msg) {
       if(msg && msg.payload){
+        msgin = msg
         const path = msg.payload.path
         setup(path)