runs queue order manipulation and whitespace tightnening

repub/datastar.py

@@ -47,13 +47,20 @@ def _publish_event(queue: asyncio.Queue[object], event: object) -> None:
 
 
 async def render_sse_event(
-    render: RenderFunction, *, last_event_id: str | None = None
+    render: RenderFunction,
+    *,
+    last_event_id: str | None = None,
+    use_view_transition: bool = False,
 ) -> tuple[str | None, DatastarEvent | None]:
     html = _coerce_html(await render())
     event_id = _render_hash(html)
     if event_id == last_event_id:
         return last_event_id, None
-    return event_id, SSE.patch_elements(html, event_id=event_id)
+    return event_id, SSE.patch_elements(
+        html,
+        event_id=event_id,
+        use_view_transition=use_view_transition,
+    )
 
 
 async def render_stream(
@@ -71,9 +78,11 @@ async def render_stream(
             yield event
 
     while True:
-        await queue.get()
+        event_name = await queue.get()
         last_event_id, event = await render_sse_event(
-            render, last_event_id=last_event_id
+            render,
+            last_event_id=last_event_id,
+            use_view_transition=event_name == "queue-reordered",
         )
         if event is not None:
             yield event