From 1b421ff5052474a4ef5d3bd44fda2c078abd2db1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateo=20Guzm=C3=A1n?= <info@mateoguzman.net>
Date: Thu, 7 Aug 2025 06:13:08 -0700
Subject: [PATCH] Initial Kotlin setup and migrate `YogaConstants`

Summary:
# Changelog:
[Internal] -

As part of the ongoing effort to migrate the React Native codebase to Kotlin, this PR introduces the initial setup required for Kotlin support in Yoga.

- Added initial basic Kotlin configuration to the project.
- Migrated `YogaConstants` as an initial file to try out the first migration steps.

X-link: https://github.com/facebook/yoga/pull/1829

Reviewed By: cortinico

Differential Revision: D79545992

Pulled By: rshest
---
 .../java/com/facebook/yoga/YogaConstants.java | 25 -------------------
 .../java/com/facebook/yoga/YogaConstants.kt   | 18 +++++++++++++
 2 files changed, 18 insertions(+), 25 deletions(-)
 delete mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
 create mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.kt

diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
deleted file mode 100644
index f8205fc60c6..00000000000
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.java
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.yoga;
-
-public class YogaConstants {
-
-  public static final float UNDEFINED = Float.NaN;
-
-  public static boolean isUndefined(float value) {
-    return Float.compare(value, UNDEFINED) == 0;
-  }
-
-  public static boolean isUndefined(YogaValue value) {
-    return value.unit == YogaUnit.UNDEFINED;
-  }
-
-  public static float getUndefined() {
-    return UNDEFINED;
-  }
-}
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.kt
new file mode 100644
index 00000000000..eb768841bce
--- /dev/null
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/yoga/YogaConstants.kt
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.yoga
+
+public object YogaConstants {
+  @JvmField public val UNDEFINED: Float = Float.NaN
+
+  @JvmStatic public fun isUndefined(value: Float): Boolean = value.compareTo(UNDEFINED) == 0
+
+  @JvmStatic public fun isUndefined(value: YogaValue): Boolean = value.unit == YogaUnit.UNDEFINED
+
+  @JvmStatic public fun getUndefined(): Float = UNDEFINED
+}