1 files changed, 7 insertions, 1 deletions
diff --git a/src/fields/Doc.ts b/src/fields/Doc.ts
index 4f9377aa0..5bc770c15 100644
--- a/src/fields/Doc.ts
+++ b/src/fields/Doc.ts
@@ -94,6 +94,7 @@ export const AclAddonly = Symbol("AclAddonly");
 export const AclEdit = Symbol("AclEdit");
 export const AclAdmin = Symbol("AclAdmin");
 export const UpdatingFromServer = Symbol("UpdatingFromServer");
+export const Initializing = Symbol("Initializing");
 export const ForceServerWrite = Symbol("ForceServerWrite");
 export const CachedUpdates = Symbol("Cached updates");
 
@@ -189,6 +190,7 @@ export class Doc extends RefField {
 
     private [UpdatingFromServer]: boolean = false;
     private [ForceServerWrite]: boolean = false;
+    public [Initializing]: boolean = false;
 
     private [Update] = (diff: any) => {
         (!this[UpdatingFromServer] || this[ForceServerWrite]) && DocServer.UpdateField(this[Id], diff);
@@ -371,7 +373,8 @@ export namespace Doc {
      * @param fields the fields to project onto the target. Its type signature defines a mapping from some string key
      * to a potentially undefined field, where each entry in this mapping is optional. 
      */
-    export function assign<K extends string>(doc: Doc, fields: Partial<Record<K, Opt<Field>>>, skipUndefineds: boolean = false) {
+    export function assign<K extends string>(doc: Doc, fields: Partial<Record<K, Opt<Field>>>, skipUndefineds: boolean = false, isInitializing = false) {
+        isInitializing && (doc[Initializing] = true);
         for (const key in fields) {
             if (fields.hasOwnProperty(key)) {
                 const value = fields[key];
@@ -380,6 +383,7 @@ export namespace Doc {
                 }
             }
         }
+        isInitializing && (doc[Initializing] = false);
         return doc;
     }
 
@@ -779,10 +783,12 @@ export namespace Doc {
     export function MakeDelegate(doc: Opt<Doc>, id?: string, title?: string): Opt<Doc> {
         if (doc) {
             const delegate = new Doc(id, true);
+            delegate[Initializing] = true;
             delegate.proto = doc;
             delegate.author = Doc.CurrentUserEmail;
             if (!Doc.IsSystem(doc)) Doc.AddDocToList(doc[DataSym], "aliases", delegate);
             title && (delegate.title = title);
+            delegate[Initializing] = false;
             return delegate;
         }
         return undefined;