dmypy formats output in json the first time it's executed | Bug Fix

mypy/dmypy/client.py

@@ -664,7 +664,6 @@ def request(
     try:
         with IPCClient(name, timeout) as client:
             send(client, args)
-
             final = False
             while not final:
                 response = receive(client)

mypy/dmypy_server.py

@@ -635,7 +635,6 @@ def fine_grained_increment_follow_imports(
 
         # Process changes directly reachable from roots.
         messages = fine_grained_manager.update(changed, [], followed=True)
-
         # Follow deps from changed modules (still within graph).
         worklist = changed.copy()
         while worklist:

mypy/errors.py

@@ -944,7 +944,7 @@ def find_shadow_file_mapping(self, path: str) -> str | None:
                 return i[1]
         return None
 
-    def new_messages(self) -> list[str]:
+    def new_messages(self, formatter: ErrorFormatter | None = None) -> list[str]:
         """Return a string list of new error messages.
 
         Use a form suitable for displaying to the user.
@@ -954,7 +954,7 @@ def new_messages(self) -> list[str]:
         msgs = []
         for path in self.error_info_map.keys():
             if path not in self.flushed_files:
-                msgs.extend(self.file_messages(path))
+                msgs.extend(self.file_messages(path, formatter=formatter))
         return msgs
 
     def targets(self) -> set[str]:

mypy/server/update.py

@@ -296,7 +296,9 @@ def update(
                 if not changed_modules:
                     # Preserve state needed for the next update.
                     self.previous_targets_with_errors = self.manager.errors.targets()
-                    messages = self.manager.errors.new_messages()
+                    messages = self.manager.errors.new_messages(
+                        formatter=self.manager.error_formatter
+                    )
                     break
 
         messages = sort_messages_preserving_file_order(messages, self.previous_messages)
@@ -320,7 +322,9 @@ def trigger(self, target: str) -> list[str]:
         )
         # Preserve state needed for the next update.
         self.previous_targets_with_errors = self.manager.errors.targets()
-        self.previous_messages = self.manager.errors.new_messages().copy()
+        self.previous_messages = self.manager.errors.new_messages(
+            formatter=self.manager.error_formatter
+        ).copy()
         return self.update(changed_modules, [])
 
     def flush_cache(self) -> None: