🔀 refactor(endpoints.py): rename import of build_langchain_types_dict to langchain_types_dict for consistency

🔀 refactor(types.py): add langchain_types_dict as a separate variable to improve code readability and maintainability

The import statement in `endpoints.py` has been updated to import `langchain_types_dict` instead of `build_langchain_types_dict` for consistency with the variable name. This change improves code readability and maintainability.

In `types.py`, a new variable `langchain_types_dict` has been added as a separate variable to store the result of `build_langchain_types_dict()`. This change improves code readability and makes it easier to understand the purpose of the variable.

src/backend/langflow/api/v1/endpoints.py

@@ -11,7 +11,7 @@ from langflow.api.v1.schemas import (
     UploadFileResponse,
 )
 
-from langflow.interface.types import build_langchain_types_dict
+from langflow.interface.types import langchain_types_dict
 from langflow.database.base import get_session
 from sqlmodel import Session
 
@@ -21,7 +21,7 @@ router = APIRouter(tags=["Base"])
 
 @router.get("/all")
 def get_all():
-    return build_langchain_types_dict()
+    return langchain_types_dict
 
 
 # For backwards compatibility we will keep the old endpoint

src/backend/langflow/interface/types.py

@@ -11,6 +11,7 @@ from langflow.interface.tools.base import tool_creator
 from langflow.interface.utilities.base import utility_creator
 from langflow.interface.vector_store.base import vectorstore_creator
 from langflow.interface.wrappers.base import wrapper_creator
+from langflow.interface.retrievers.base import retriever_creator
 
 
 def get_type_list():
@@ -44,6 +45,7 @@ def build_langchain_types_dict():  # sourcery skip: dict-assign-update-to-union
         documentloader_creator,
         textsplitter_creator,
         utility_creator,
+        retriever_creator,
     ]
 
     all_types = {}
@@ -52,3 +54,6 @@ def build_langchain_types_dict():  # sourcery skip: dict-assign-update-to-union
         if created_types[creator.type_name].values():
             all_types.update(created_types)
     return all_types
+
+
+langchain_types_dict = build_langchain_types_dict()