# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 2024-08-05 08:15:10
# Node ID e2f1efa2bd86755ab3a8d30b8de6662b8e86ea10
# Parent  8e1b2868770448ac460255f3faa9b19f0d18ea14

manifest: help pytype to understant `writesubtrees`'s `getnode` type

Since we provide a default, the return of `_lazydirs.get` is cannot be None. We
help pytype to understand that.

diff --git a/mercurial/manifest.py b/mercurial/manifest.py
--- a/mercurial/manifest.py
+++ b/mercurial/manifest.py
@@ -1407,7 +1407,9 @@ class TreeManifest:
             ld = m._lazydirs.get(d)
             if ld:
                 return ld[0]
-            return m._dirs.get(d, emptytree)._node
+            tree = m._dirs.get(d, emptytree)
+            assert tree is not None  # helps pytype
+            return tree._node
 
         # let's skip investigating things that `match` says we do not need.
         visit = match.visitchildrenset(self._dir[:-1])