diff --git a/esphome/config_helpers.py b/esphome/config_helpers.py
index 5ecd665abe..3c866f6d31 100644
--- a/esphome/config_helpers.py
+++ b/esphome/config_helpers.py
@@ -9,6 +9,9 @@ from esphome.const import (
 )
 from esphome.core import CORE
 
+# Pre-build lookup map from (platform, framework) tuples to PlatformFramework enum
+_PLATFORM_FRAMEWORK_LOOKUP = {pf.value: pf for pf in PlatformFramework}
+
 
 class Extend:
     def __init__(self, value):
@@ -126,8 +129,6 @@ def filter_source_files_from_platform(
     Returns:
         Function that returns list of files to exclude for current platform
     """
-    # Pre-build lookup map from (platform, framework) tuples to PlatformFramework enum
-    _PLATFORM_FRAMEWORK_LOOKUP = {pf.value: pf for pf in PlatformFramework}
 
     def filter_source_files() -> list[str]:
         # Get current platform/framework
diff --git a/esphome/loader.py b/esphome/loader.py
index 4a6847bd89..06d1c7817b 100644
--- a/esphome/loader.py
+++ b/esphome/loader.py
@@ -107,7 +107,11 @@ class ComponentManifest:
 
     @property
     def resources(self) -> list[FileResource]:
-        """Return a list of all file resources defined in the package of this component."""
+        """Return a list of all file resources defined in the package of this component.
+
+        This will return all cpp source files that are located in the same folder as the
+        loaded .py file (does not look through subdirectories)
+        """
         ret: list[FileResource] = []
 
         # Get filter function for source files
@@ -127,6 +131,7 @@ class ComponentManifest:
             if Path(resource).suffix not in SOURCE_FILE_EXTENSIONS:
                 continue
             if not importlib.resources.files(self.package).joinpath(resource).is_file():
+                # Not a resource = this is a directory (yeah this is confusing)
                 continue
 
             # Skip excluded files