Migrate ValueAnimatedNode to Kotlin

Summary:
ValueAnimatedNode.java -> ValueAnimatedNode.kt

changelog: [internal] internal

Differential Revision: D60188318

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.kt

@@ -0,0 +1,65 @@
+/*
+ * 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.react.animated
+
+import com.facebook.react.bridge.ReadableMap
+
+/**
+ * Basic type of animated node that maps directly from {@code Animated.Value(x)} of Animated.js
+ * library.
+ */
+internal open class ValueAnimatedNode : AnimatedNode {
+  @JvmField internal var mValue: Double = Double.NaN
+  @JvmField internal var mOffset: Double = 0.0
+  private var mValueListener: AnimatedNodeValueListener? = null
+
+  public constructor() : super() {
+    // empty constructor that can be used by subclasses
+  }
+
+  public constructor(config: ReadableMap) : super() {
+    mValue = config.getDouble("value")
+    mOffset = config.getDouble("offset")
+  }
+
+  public fun getValue(): Double {
+    if ((mOffset + mValue).isNaN()) {
+      this.update()
+    }
+    return mOffset + mValue
+  }
+
+  open fun getAnimatedObject(): Any? {
+    return null
+  }
+
+  public fun flattenOffset(): Unit {
+    mValue += mOffset
+    mOffset = 0.0
+  }
+
+  public fun extractOffset(): Unit {
+    mOffset += mValue
+    mValue = 0.0
+  }
+
+  public fun onValueUpdate(): Unit {
+    if (mValueListener == null) {
+      return
+    }
+    requireNotNull(mValueListener).onValueUpdate(getValue())
+  }
+
+  public fun setValueListener(listener: AnimatedNodeValueListener?): Unit {
+    mValueListener = listener
+  }
+
+  override public fun prettyPrint(): String {
+    return "ValueAnimatedNode[$mTag]: value: $mValue offset: $mOffset"
+  }
+}