New vscode schema gen (#3336)

esphome/config_validation.py

@@ -58,7 +58,7 @@ from esphome.core import (
 )
 from esphome.helpers import list_starts_with, add_class_to_obj
 from esphome.jsonschema import (
-    jschema_composite,
+    jschema_list,
     jschema_extractor,
     jschema_registry,
     jschema_typed,
@@ -327,7 +327,7 @@ def boolean(value):
     )
 
 
-@jschema_composite
+@jschema_list
 def ensure_list(*validators):
     """Validate this configuration option to be a list.
 
@@ -494,7 +494,11 @@ def templatable(other_validators):
     """
     schema = Schema(other_validators)
 
+    @jschema_extractor("templatable")
     def validator(value):
+        # pylint: disable=comparison-with-callable
+        if value == jschema_extractor:
+            return other_validators
         if isinstance(value, Lambda):
             return returning_lambda(value)
         if isinstance(other_validators, dict):
@@ -1546,7 +1550,7 @@ def validate_registry(name, registry):
     return ensure_list(validate_registry_entry(name, registry))
 
 
-@jschema_composite
+@jschema_list
 def maybe_simple_value(*validators, **kwargs):
     key = kwargs.pop("key", CONF_VALUE)
     validator = All(*validators)