Validate Range to disallow min > max

discord/app_commands/transformers.py

@@ -310,6 +310,9 @@ def _make_range_transformer(
     min: Optional[Union[int, float]] = None,
     max: Optional[Union[int, float]] = None,
 ) -> Type[Transformer]:
+    if min and max and min > max:
+        raise TypeError('minimum cannot be larger than maximum')
+
     ns = {
         'type': classmethod(lambda _: opt_type),
         'min_value': classmethod(lambda _: min),

discord/ext/commands/converter.py

@@ -1081,6 +1081,9 @@ else:
             self.min: Optional[Union[int, float]] = min
             self.max: Optional[Union[int, float]] = max
 
+            if min and max and min > max:
+                raise TypeError('minimum cannot be larger than maximum')
+
         async def convert(self, ctx: Context[BotT], value: str) -> Union[int, float]:
             count = converted = self.annotation(value)
             if self.annotation is str: