From e0ec01fe7e46072dae7f456a7e4ed7d2debd45f2 Mon Sep 17 00:00:00 2001
From: zepumph <michael.kauzmann@colorado.edu>
Date: Thu, 17 Oct 2019 14:35:21 -0800
Subject: [PATCH] convert _.extend to PHET_CORE/merge,
 https://github.com/phetsims/phet-core/issues/71

---
 js/common/model/PointController.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/js/common/model/PointController.js b/js/common/model/PointController.js
index e4b2d6e..252aaf4 100644
--- a/js/common/model/PointController.js
+++ b/js/common/model/PointController.js
@@ -15,6 +15,7 @@ define( require => {
   const Animation = require( 'TWIXT/Animation' );
   const BooleanProperty = require( 'AXON/BooleanProperty' );
   const Easing = require( 'TWIXT/Easing' );
+  const merge = require( 'PHET_CORE/merge' );
   const numberLineIntegers = require( 'NUMBER_LINE_INTEGERS/numberLineIntegers' );
   const NumberLinePoint = require( 'NUMBER_LINE_INTEGERS/common/model/NumberLinePoint' );
   const NumberProperty = require( 'AXON/NumberProperty' );
@@ -33,7 +34,7 @@ define( require => {
      */
     constructor( options ) {
 
-      options = _.extend( {
+      options = merge( {
 
         // color used when represented in the view
         color: 'black',