make AnimatedValueXY constructor input value immutable

Reviewed By: furdei Differential Revision: D6741521 fbshipit-source-id: e8401982fbb3c3d6cd4bcc2581358fd4a5de12f9
facebook · Jan 18, 2018 · 52ffa5d · 52ffa5d
1 parent b5e19ad
commit 52ffa5d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Libraries/Animated/src/nodes/AnimatedValueXY.js b/Libraries/Animated/src/nodes/AnimatedValueXY.js
@@ -33,7 +33,7 @@ class AnimatedValueXY extends AnimatedWithChildren {
   _listeners: {[key: string]: {x: string, y: string}};
 
   constructor(
-    valueIn?: ?{x: number | AnimatedValue, y: number | AnimatedValue},
+    valueIn?: ?{+x: number | AnimatedValue, +y: number | AnimatedValue},
   ) {
     super();
     const value: any = valueIn || {x: 0, y: 0}; // @flowfixme: shouldn't need `: any`