diff --git a/Gruntfile.js b/Gruntfile.js
index 30fd933c..0d9c753f 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -3,4 +3,4 @@
 /* eslint-env node */
 
 // use chipper's gruntfile
-module.exports = require( '../chipper/js/grunt/Gruntfile.js' );
+module.exports = require( '../chipper/js/grunt/Gruntfile.js' );
\ No newline at end of file
diff --git a/js/common/GOColors.ts b/js/common/GOColors.ts
index 0cd7cb17..75acf867 100644
--- a/js/common/GOColors.ts
+++ b/js/common/GOColors.ts
@@ -199,4 +199,4 @@ const GOColors = {
 };
 
 geometricOptics.register( 'GOColors', GOColors );
-export default GOColors;
+export default GOColors;
\ No newline at end of file
diff --git a/js/common/GOConstants.ts b/js/common/GOConstants.ts
index 267d950c..3b1b4f70 100644
--- a/js/common/GOConstants.ts
+++ b/js/common/GOConstants.ts
@@ -140,4 +140,4 @@ const GOConstants = {
 };
 
 geometricOptics.register( 'GOConstants', GOConstants );
-export default GOConstants;
+export default GOConstants;
\ No newline at end of file
diff --git a/js/common/model/ArrowScene.ts b/js/common/model/ArrowScene.ts
index 3347e306..3ceaa58b 100644
--- a/js/common/model/ArrowScene.ts
+++ b/js/common/model/ArrowScene.ts
@@ -111,4 +111,4 @@ export default class ArrowScene extends GOScene {
   }
 }
 
-geometricOptics.register( 'ArrowScene', ArrowScene );
+geometricOptics.register( 'ArrowScene', ArrowScene );
\ No newline at end of file
diff --git a/js/common/model/FramedScene.ts b/js/common/model/FramedScene.ts
index 2fc7fad9..9a1df447 100644
--- a/js/common/model/FramedScene.ts
+++ b/js/common/model/FramedScene.ts
@@ -115,4 +115,4 @@ export default class FramedScene extends GOScene {
   }
 }
 
-geometricOptics.register( 'FramedScene', FramedScene );
+geometricOptics.register( 'FramedScene', FramedScene );
\ No newline at end of file
diff --git a/js/common/model/GOScene.ts b/js/common/model/GOScene.ts
index a3e52209..5e53a8d4 100644
--- a/js/common/model/GOScene.ts
+++ b/js/common/model/GOScene.ts
@@ -108,4 +108,4 @@ export default abstract class GOScene extends PhetioObject {
   }
 }
 
-geometricOptics.register( 'GOScene', GOScene );
+geometricOptics.register( 'GOScene', GOScene );
\ No newline at end of file
diff --git a/js/common/model/Guide.ts b/js/common/model/Guide.ts
index 5bce654e..1cd48df6 100644
--- a/js/common/model/Guide.ts
+++ b/js/common/model/Guide.ts
@@ -76,4 +76,4 @@ export default class Guide {
   }
 }
 
-geometricOptics.register( 'Guide', Guide );
+geometricOptics.register( 'Guide', Guide );
\ No newline at end of file
diff --git a/js/common/model/Guides.ts b/js/common/model/Guides.ts
index 450111db..4d6239aa 100644
--- a/js/common/model/Guides.ts
+++ b/js/common/model/Guides.ts
@@ -35,4 +35,4 @@ export default class Guides {
   }
 }
 
-geometricOptics.register( 'Guides', Guides );
+geometricOptics.register( 'Guides', Guides );
\ No newline at end of file
diff --git a/js/common/model/LightScene.ts b/js/common/model/LightScene.ts
index 340dccfb..b633fe9a 100644
--- a/js/common/model/LightScene.ts
+++ b/js/common/model/LightScene.ts
@@ -144,4 +144,4 @@ export default class LightScene extends GOScene {
   }
 }
 
-geometricOptics.register( 'LightScene', LightScene );
+geometricOptics.register( 'LightScene', LightScene );
\ No newline at end of file
diff --git a/js/common/model/LightSpot.ts b/js/common/model/LightSpot.ts
index 2107ded7..780e3c17 100644
--- a/js/common/model/LightSpot.ts
+++ b/js/common/model/LightSpot.ts
@@ -171,4 +171,4 @@ function getIntersectionPosition( projectionScreenPosition: Vector2, opticPoint:
   return new Vector2( projectionScreenPosition.x, y );
 }
 
-geometricOptics.register( 'LightSpot', LightSpot );
+geometricOptics.register( 'LightSpot', LightSpot );
\ No newline at end of file
diff --git a/js/common/model/OpticShapes.ts b/js/common/model/OpticShapes.ts
index 39cd6d50..40a77c06 100644
--- a/js/common/model/OpticShapes.ts
+++ b/js/common/model/OpticShapes.ts
@@ -20,4 +20,4 @@ type OpticShapes = {
   readonly activeBoundsShape: Shape;
 };
 
-export default OpticShapes;
+export default OpticShapes;
\ No newline at end of file
diff --git a/js/common/model/OpticalObjectChoice.ts b/js/common/model/OpticalObjectChoice.ts
index 8fb51ec7..54b15d3f 100644
--- a/js/common/model/OpticalObjectChoice.ts
+++ b/js/common/model/OpticalObjectChoice.ts
@@ -150,4 +150,4 @@ export default class OpticalObjectChoice extends EnumerationValue {
   }
 }
 
-geometricOptics.register( 'OpticalObjectChoice', OpticalObjectChoice );
+geometricOptics.register( 'OpticalObjectChoice', OpticalObjectChoice );
\ No newline at end of file
diff --git a/js/common/view/GuideNode.ts b/js/common/view/GuideNode.ts
index 8eeb8917..f2f392aa 100644
--- a/js/common/view/GuideNode.ts
+++ b/js/common/view/GuideNode.ts
@@ -142,4 +142,4 @@ function setArmPosition( armNode: Node, viewFulcrumPosition: Vector2, angle: num
   armNode.center = Vector2.createPolar( ARM_WIDTH / 2, -angle ).plus( viewFulcrumPosition );
 }
 
-geometricOptics.register( 'GuideNode', GuideNode );
+geometricOptics.register( 'GuideNode', GuideNode );
\ No newline at end of file
diff --git a/js/common/view/GuidesNode.ts b/js/common/view/GuidesNode.ts
index 2dfa77b7..a1ccab14 100644
--- a/js/common/view/GuidesNode.ts
+++ b/js/common/view/GuidesNode.ts
@@ -36,4 +36,4 @@ export default class GuidesNode extends Node {
   }
 }
 
-geometricOptics.register( 'GuidesNode', GuidesNode );
+geometricOptics.register( 'GuidesNode', GuidesNode );
\ No newline at end of file
diff --git a/js/common/view/OpticalAxisInFrontOfProjectionScreenNode.ts b/js/common/view/OpticalAxisInFrontOfProjectionScreenNode.ts
index ed062e40..2b5f71f5 100644
--- a/js/common/view/OpticalAxisInFrontOfProjectionScreenNode.ts
+++ b/js/common/view/OpticalAxisInFrontOfProjectionScreenNode.ts
@@ -71,4 +71,4 @@ export default class OpticalAxisInFrontOfProjectionScreenNode extends Line {
   }
 }
 
-geometricOptics.register( 'OpticalAxisInFrontOfProjectionScreenNode', OpticalAxisInFrontOfProjectionScreenNode );
+geometricOptics.register( 'OpticalAxisInFrontOfProjectionScreenNode', OpticalAxisInFrontOfProjectionScreenNode );
\ No newline at end of file
diff --git a/js/geometric-optics-main.ts b/js/geometric-optics-main.ts
index 2a1cabcb..d70c724e 100644
--- a/js/geometric-optics-main.ts
+++ b/js/geometric-optics-main.ts
@@ -16,4 +16,4 @@ simLauncher.launch( () => {
     phetioDesigned: true
   } );
   sim.start();
-} );
+} );
\ No newline at end of file
diff --git a/js/mirror/model/MirrorShapes.ts b/js/mirror/model/MirrorShapes.ts
index 4ef137e4..97aa59ac 100644
--- a/js/mirror/model/MirrorShapes.ts
+++ b/js/mirror/model/MirrorShapes.ts
@@ -101,4 +101,4 @@ export default class MirrorShapes implements OpticShapes {
   }
 }
 
-geometricOptics.register( 'MirrorShapes', MirrorShapes );
+geometricOptics.register( 'MirrorShapes', MirrorShapes );
\ No newline at end of file