diff options
Diffstat (limited to 'src/server/websocket.ts')
| -rw-r--r-- | src/server/websocket.ts | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/server/websocket.ts b/src/server/websocket.ts index 7e3c4da82..4ae97913f 100644 --- a/src/server/websocket.ts +++ b/src/server/websocket.ts @@ -277,7 +277,11 @@ export namespace WebSocket { function addToListField(socket: Socket, diff: Diff, curListItems?: Transferable): void { diff.diff.$set = diff.diff.$addToSet; delete diff.diff.$addToSet;// convert add to set to a query of the current fields, and then a set of the composition of the new fields with the old ones const updatefield = Array.from(Object.keys(diff.diff.$set))[0]; - const newListItems = diff.diff.$set[updatefield].fields; + const newListItems = diff.diff.$set[updatefield]?.fields; + if (!newListItems) { + console.log("Error: addToListField - no new list items"); + return; + } const curList = (curListItems as any)?.fields?.[updatefield.replace("fields.", "")]?.fields.filter((item: any) => item !== undefined) || []; diff.diff.$set[updatefield].fields = [...curList, ...newListItems.filter((newItem: any) => newItem === null || !curList.some((curItem: any) => curItem.fieldId ? curItem.fieldId === newItem.fieldId : curItem.heading ? curItem.heading === newItem.heading : curItem === newItem))]; const sendBack = diff.diff.length !== diff.diff.$set[updatefield].fields.length; |