From c30e130a485ebd672d2c6c9499767a6f3272581d Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sun, 26 Oct 2025 01:07:08 -0700
Subject: [PATCH] dry

---
 esphome/components/binary_sensor/filter.h | 6 ++----
 esphome/components/sensor/filter.h        | 6 ++----
 esphome/components/text_sensor/filter.h   | 6 ++----
 3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/esphome/components/binary_sensor/filter.h b/esphome/components/binary_sensor/filter.h
index 7ee253ead5..c1c54709a9 100644
--- a/esphome/components/binary_sensor/filter.h
+++ b/esphome/components/binary_sensor/filter.h
@@ -118,14 +118,12 @@ class LambdaFilter : public Filter {
  */
 class StatelessLambdaFilter : public Filter {
  public:
-  using stateless_lambda_filter_t = optional<bool> (*)(bool);
-
-  explicit StatelessLambdaFilter(stateless_lambda_filter_t f) : f_(f) {}
+  explicit StatelessLambdaFilter(optional<bool> (*f)(bool)) : f_(f) {}
 
   optional<bool> new_value(bool value) override { return this->f_(value); }
 
  protected:
-  stateless_lambda_filter_t f_;
+  optional<bool> (*f_)(bool);
 };
 
 class SettleFilter : public Filter, public Component {
diff --git a/esphome/components/sensor/filter.h b/esphome/components/sensor/filter.h
index 4f0840a75e..ebcdbb8cab 100644
--- a/esphome/components/sensor/filter.h
+++ b/esphome/components/sensor/filter.h
@@ -303,14 +303,12 @@ class LambdaFilter : public Filter {
  */
 class StatelessLambdaFilter : public Filter {
  public:
-  using stateless_lambda_filter_t = optional<float> (*)(float);
-
-  explicit StatelessLambdaFilter(stateless_lambda_filter_t lambda_filter) : lambda_filter_(lambda_filter) {}
+  explicit StatelessLambdaFilter(optional<float> (*lambda_filter)(float)) : lambda_filter_(lambda_filter) {}
 
   optional<float> new_value(float value) override { return this->lambda_filter_(value); }
 
  protected:
-  stateless_lambda_filter_t lambda_filter_;
+  optional<float> (*lambda_filter_)(float);
 };
 
 /// A simple filter that adds `offset` to each value it receives.
diff --git a/esphome/components/text_sensor/filter.h b/esphome/components/text_sensor/filter.h
index d8c71379ad..dddf1b2b34 100644
--- a/esphome/components/text_sensor/filter.h
+++ b/esphome/components/text_sensor/filter.h
@@ -69,14 +69,12 @@ class LambdaFilter : public Filter {
  */
 class StatelessLambdaFilter : public Filter {
  public:
-  using stateless_lambda_filter_t = optional<std::string> (*)(std::string);
-
-  explicit StatelessLambdaFilter(stateless_lambda_filter_t lambda_filter) : lambda_filter_(lambda_filter) {}
+  explicit StatelessLambdaFilter(optional<std::string> (*lambda_filter)(std::string)) : lambda_filter_(lambda_filter) {}
 
   optional<std::string> new_value(std::string value) override { return this->lambda_filter_(value); }
 
  protected:
-  stateless_lambda_filter_t lambda_filter_;
+  optional<std::string> (*lambda_filter_)(std::string);
 };
 
 /// A simple filter that converts all text to uppercase