diff --git a/spine-ts/spine-phaser/example/arcade-physics-test.html b/spine-ts/spine-phaser/example/arcade-physics-test.html
index b15bb72fc..b1f793a8d 100644
--- a/spine-ts/spine-phaser/example/arcade-physics-test.html
+++ b/spine-ts/spine-phaser/example/arcade-physics-test.html
@@ -13,7 +13,7 @@
     <h1>Arcade Physics example</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -36,7 +36,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("coin-data", "assets/coin-pro.skel");
@@ -44,7 +44,7 @@
     }
 
     function create() {
-        let coin = this.add.spine(400, 200, 'coin-data', "coin-atlas");
+        const coin = this.add.spine(400, 200, 'coin-data', "coin-atlas");
         coin.animationState.setAnimation(0, "animation", true);
         coin.setScale(0.3);
         coin.setSize(280, 280);
diff --git a/spine-ts/spine-phaser/example/basic-example.html b/spine-ts/spine-phaser/example/basic-example.html
index 8dd86d943..f9f00878e 100644
--- a/spine-ts/spine-phaser/example/basic-example.html
+++ b/spine-ts/spine-phaser/example/basic-example.html
@@ -13,7 +13,7 @@
     <h1>Basic example</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
diff --git a/spine-ts/spine-phaser/example/basic-vanilla-js-example.html b/spine-ts/spine-phaser/example/basic-vanilla-js-example.html
index dc7662314..5e7e759ed 100644
--- a/spine-ts/spine-phaser/example/basic-vanilla-js-example.html
+++ b/spine-ts/spine-phaser/example/basic-vanilla-js-example.html
@@ -14,7 +14,7 @@
     <h1>Basic example</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -30,7 +30,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("spineboy-data", "assets/spineboy-pro.skel");
@@ -38,7 +38,7 @@
     }
 
     function create() {
-        let spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
     }
diff --git a/spine-ts/spine-phaser/example/batching-test.html b/spine-ts/spine-phaser/example/batching-test.html
index 488124a57..dc9390d07 100644
--- a/spine-ts/spine-phaser/example/batching-test.html
+++ b/spine-ts/spine-phaser/example/batching-test.html
@@ -13,7 +13,7 @@
     <h1>Batching test</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -30,7 +30,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
     let debug;
 
     function preload() {
@@ -41,12 +41,12 @@
     }
 
     function create() {
-        let plugin = this.spine;
+        const plugin = this.spine;
         let x = 25;
         let y = 60;
         for (let j = 0; j < 10; j++, y += 600 / 10) {
             for (let i = 0; i < 20; i++, x += 800 / 20) {
-                let obj = Math.random() > 0.5
+                const obj = Math.random() > 0.5
                     ? this.add.spine(x, y, 'spineboy-data', "spineboy-atlas")
                     : this.add.spine(x, y, 'raptor-data', "raptor-atlas");
                 obj.animationState.setAnimation(0, "walk", true);
diff --git a/spine-ts/spine-phaser/example/blend-test.html b/spine-ts/spine-phaser/example/blend-test.html
index e1f8b4237..ed9784dc1 100644
--- a/spine-ts/spine-phaser/example/blend-test.html
+++ b/spine-ts/spine-phaser/example/blend-test.html
@@ -13,7 +13,7 @@
     <h1>Blend test</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -32,7 +32,7 @@
     };
 
     let controls;
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("spineboy-data", "assets/spineboy-pro.skel");
@@ -41,14 +41,14 @@
 
     function create() {
         for (var i = 0; i < 4; i++) {
-            let obj = this.add.spine(i * 200, 600, 'spineboy-data', 'spineboy-atlas').setScale(0.25);
+            const obj = this.add.spine(i * 200, 600, 'spineboy-data', 'spineboy-atlas').setScale(0.25);
             obj.setScale(0.25);
             obj.animationState.setAnimation(0, "idle", true);
             obj.animationState.setAnimation(1, "shoot", true);
         }
-        var cursors = this.input.keyboard.createCursorKeys();
+        const cursors = this.input.keyboard.createCursorKeys();
 
-        var controlConfig = {
+        const controlConfig = {
             camera: this.cameras.main,
             left: cursors.left,
             right: cursors.right,
diff --git a/spine-ts/spine-phaser/example/bounds-test.html b/spine-ts/spine-phaser/example/bounds-test.html
index 7238a3743..d51473368 100644
--- a/spine-ts/spine-phaser/example/bounds-test.html
+++ b/spine-ts/spine-phaser/example/bounds-test.html
@@ -13,7 +13,7 @@
     <h1>Bounds test</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -30,7 +30,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
     let spineboy;
 
     function preload() {
@@ -49,7 +49,7 @@
     let time = 0;
     function update(t, delta) {
         time += delta / 1000;
-        let scale = 0.4 + Math.cos(time) * 0.2;
+        const scale = 0.4 + Math.cos(time) * 0.2;
         spineboy.scale = scale;
         spineboy.angle++;
     }
diff --git a/spine-ts/spine-phaser/example/camera-pipeline-test.html b/spine-ts/spine-phaser/example/camera-pipeline-test.html
index 60b0243d4..a85f8ef6b 100644
--- a/spine-ts/spine-phaser/example/camera-pipeline-test.html
+++ b/spine-ts/spine-phaser/example/camera-pipeline-test.html
@@ -12,7 +12,7 @@
 <body>
     <h1>Camera pipeline test</h1>
     <script>
-        var config = {
+        const config = {
             type: Phaser.AUTO,
             width: 800,
             height: 600,
@@ -98,7 +98,7 @@
             // FIXME: Need a dummy sprite so the MultiPipeline sets up state
             // so rendering the Spine sprite actually works. Unsure what state
             // is needed.
-            var s = this.add.sprite(0, 0, 'img');
+            this.add.sprite(0, 0, 'img');
 
             let spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
             spineboy.scale = 0.5;
diff --git a/spine-ts/spine-phaser/example/canvas-test.html b/spine-ts/spine-phaser/example/canvas-test.html
index d78f80a9d..2cd4f2508 100644
--- a/spine-ts/spine-phaser/example/canvas-test.html
+++ b/spine-ts/spine-phaser/example/canvas-test.html
@@ -13,7 +13,7 @@
     <h1>Canvas test</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -29,7 +29,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("spineboy-data", "assets/spineboy-pro.skel");
@@ -37,7 +37,7 @@
     }
 
     function create() {
-        let spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
     }
diff --git a/spine-ts/spine-phaser/example/control-bones-test.html b/spine-ts/spine-phaser/example/control-bones-test.html
index 6b935964b..fe8b199ab 100644
--- a/spine-ts/spine-phaser/example/control-bones-test.html
+++ b/spine-ts/spine-phaser/example/control-bones-test.html
@@ -12,7 +12,7 @@
 <body>
     <h1>Control bones</h1>
     <script>
-        var config = {
+        const config = {
             type: Phaser.AUTO,
             width: 800,
             height: 600,
@@ -28,7 +28,7 @@
             }
         };
 
-        let game = new Phaser.Game(config);
+        const game = new Phaser.Game(config);
 
         function preload() {
             this.load.spineBinary("stretchyman-data", "assets/stretchyman-pro.skel");
@@ -36,33 +36,31 @@
         }
 
         function create() {
-            let stretchyman = this.add.spine(400, 550, 'stretchyman-data', "stretchyman-atlas");
+            const stretchyman = this.add.spine(400, 550, 'stretchyman-data', "stretchyman-atlas");
             stretchyman.scale = 0.8;
             stretchyman.skeleton.updateWorldTransform();
 
-            var controlBones = ["back-arm-ik-target", "back-leg-ik-target", "front-arm-ik-target", "front-leg-ik-target"];
+            const controlBones = ["back-arm-ik-target", "back-leg-ik-target", "front-arm-ik-target", "front-leg-ik-target"];
             for (var i = 0; i < controlBones.length; i++) {
-                var bone = stretchyman.skeleton.findBone(controlBones[i]);
-                let point = { x: bone.worldX, y: bone.worldY };
+                const bone = stretchyman.skeleton.findBone(controlBones[i]);
+                const point = { x: bone.worldX, y: bone.worldY };
                 stretchyman.skeletonToPhaserWorldCoordinates(point);
 
-                var control = this.add.circle(point.x, point.y, 4, 0xff00ff).setData('bone', bone);
+                const control = this.add.circle(point.x, point.y, 4, 0xff00ff).setData('bone', bone);
 
                 control.setInteractive();
                 this.input.setDraggable(control);
                 this.input.on('drag', function (pointer, gameObject, dragX, dragY) {
-
                     gameObject.x = dragX;
                     gameObject.y = dragY;
 
-                    var bone = gameObject.getData('bone');
-                    let point = { x: dragX, y: dragY };
+                    const bone = gameObject.getData('bone');
+                    const point = { x: dragX, y: dragY };
                     stretchyman.phaserWorldCoordinatesToBone(point, bone);
 
                     bone.x = point.x;
                     bone.y = point.y;
                     bone.update();
-
                 }, this);
             }
         }
diff --git a/spine-ts/spine-phaser/example/depth-test.html b/spine-ts/spine-phaser/example/depth-test.html
index 910db939b..4bb71d6f5 100644
--- a/spine-ts/spine-phaser/example/depth-test.html
+++ b/spine-ts/spine-phaser/example/depth-test.html
@@ -13,7 +13,7 @@
     <h1>Depth test</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -29,7 +29,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.image('logo', 'phaser.png');
@@ -39,7 +39,7 @@
 
     function create() {
         this.add.image(400, 350, 'logo').setName('logo1').setDepth(2);
-        let spineboy = this.add.spine(400, 600, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(400, 600, 'spineboy-data', "spineboy-atlas");
         spineboy.animationState.setAnimation(0, "walk", true)
         spineboy.setScale(0.5)
         spineboy.setDepth(1);
diff --git a/spine-ts/spine-phaser/example/extended-class-test.html b/spine-ts/spine-phaser/example/extended-class-test.html
index 239d2bb42..0841ba3a4 100644
--- a/spine-ts/spine-phaser/example/extended-class-test.html
+++ b/spine-ts/spine-phaser/example/extended-class-test.html
@@ -22,7 +22,7 @@
     }
 
     function create() {
-        let spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
     }
@@ -71,11 +71,11 @@
         create() {
             this.add.image(0, 0, 'logo').setOrigin(0);
 
-            let custom1 = new CustomSpineObject1(this, 100, 550, 'spineboy-data', 'spineboy-atlas', 'idle', true);
+            const custom1 = new CustomSpineObject1(this, 100, 550, 'spineboy-data', 'spineboy-atlas', 'idle', true);
             custom1.spine.setScale(0.5);
-            let custom2 = new CustomSpineObject2(this, 350, 550, 'spineboy-data', 'spineboy-atlas', 'walk', true);
+            const custom2 = new CustomSpineObject2(this, 350, 550, 'spineboy-data', 'spineboy-atlas', 'walk', true);
             custom2.spine.setScale(0.5);
-            let custom3 = new CustomSpineObject3(this, 600, 550, 'spineboy-data', 'spineboy-atlas', 'run', true);
+            const custom3 = new CustomSpineObject3(this, 600, 550, 'spineboy-data', 'spineboy-atlas', 'run', true);
             custom3.spine.setScale(0.5);
 
             this.add.image(400, 0, 'logo').setOrigin(0);
diff --git a/spine-ts/spine-phaser/example/mix-and-match.html b/spine-ts/spine-phaser/example/mix-and-match.html
index 87304dfbd..b5a77ccc0 100644
--- a/spine-ts/spine-phaser/example/mix-and-match.html
+++ b/spine-ts/spine-phaser/example/mix-and-match.html
@@ -13,7 +13,7 @@
     <h1>Mix and match</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -29,7 +29,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("mix-and-match-data", "assets/mix-and-match-pro.skel");
@@ -37,12 +37,12 @@
     }
 
     function create() {
-        let mixAndMatch = this.add.spine(400, 500, 'mix-and-match-data', "mix-and-match-atlas");
+        const mixAndMatch = this.add.spine(400, 500, 'mix-and-match-data', "mix-and-match-atlas");
         mixAndMatch.scale = 0.5;
         mixAndMatch.animationState.setAnimation(0, "walk", true);
 
-        let skeletonData = mixAndMatch.skeleton.data;
-        let skin = new spine.Skin("custom");
+        const skeletonData = mixAndMatch.skeleton.data;
+        const skin = new spine.Skin("custom");
         skin.addSkin(skeletonData.findSkin("skin-base"));
         skin.addSkin(skeletonData.findSkin("nose/short"));
         skin.addSkin(skeletonData.findSkin("eyelids/girly"));
diff --git a/spine-ts/spine-phaser/example/multi-scene-test.html b/spine-ts/spine-phaser/example/multi-scene-test.html
index 4a574d7a6..cb43d932f 100644
--- a/spine-ts/spine-phaser/example/multi-scene-test.html
+++ b/spine-ts/spine-phaser/example/multi-scene-test.html
@@ -25,7 +25,7 @@
         }
 
         create() {
-            let spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
+            const spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
             spineboy.scale = 0.5;
             spineboy.animationState.setAnimation(0, "walk", true);
             this.input.once('pointerdown', () => this.scene.start('Scene2'));
@@ -43,14 +43,14 @@
         }
 
         create() {
-            let raptor = this.add.spine(300, 600, 'raptor-data', "raptor-atlas");
+            const raptor = this.add.spine(300, 600, 'raptor-data', "raptor-atlas");
             raptor.scale = 0.5;
             raptor.animationState.setAnimation(0, "walk", true);
             this.input.once('pointerdown', () => this.scene.start('Scene1'));
         }
     }
 
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -62,7 +62,7 @@
             ]
         }
     };
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 </script>
 
 </html>
\ No newline at end of file
diff --git a/spine-ts/spine-phaser/example/render-to-texture-test.html b/spine-ts/spine-phaser/example/render-to-texture-test.html
index ff33a6669..2f3aa0057 100644
--- a/spine-ts/spine-phaser/example/render-to-texture-test.html
+++ b/spine-ts/spine-phaser/example/render-to-texture-test.html
@@ -13,7 +13,7 @@
     <h1>Render to texture</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -29,7 +29,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("spineboy-data", "assets/spineboy-pro.skel");
@@ -37,8 +37,8 @@
     }
 
     function create() {
-        let renderTexture = this.add.renderTexture(0, 0, 800, 600);
-        let spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
+        const renderTexture = this.add.renderTexture(0, 0, 800, 600);
+        const spineboy = this.add.spine(400, 300, 'spineboy-data', "spineboy-atlas");
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
         this.add.text(200, 8, 'Click to stamp SpineBoy');
diff --git a/spine-ts/spine-phaser/example/typescript/index.ts b/spine-ts/spine-phaser/example/typescript/index.ts
index 1e4c6a671..2ba76b21f 100644
--- a/spine-ts/spine-phaser/example/typescript/index.ts
+++ b/spine-ts/spine-phaser/example/typescript/index.ts
@@ -8,14 +8,14 @@ class SpineDemo extends Scene {
     }
 
     create() {
-        let spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(400, 500, 'spineboy-data', "spineboy-atlas");
         this.make
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
     }
 }
 
-var config = {    
+const config = {    
     width: 800,
     height: 600,
     type: Phaser.WEBGL,
@@ -27,4 +27,4 @@ var config = {
     }
 };
 
-let game = new Phaser.Game(config);
\ No newline at end of file
+new Phaser.Game(config);
\ No newline at end of file
diff --git a/spine-ts/spine-phaser/example/visibility-test.html b/spine-ts/spine-phaser/example/visibility-test.html
index 61ce8a3c0..118f6bc6f 100644
--- a/spine-ts/spine-phaser/example/visibility-test.html
+++ b/spine-ts/spine-phaser/example/visibility-test.html
@@ -14,7 +14,7 @@
     <h1>Basic example</h1>
 </body>
 <script>
-    var config = {
+    const config = {
         type: Phaser.AUTO,
         width: 800,
         height: 600,
@@ -30,7 +30,7 @@
         }
     };
 
-    let game = new Phaser.Game(config);
+    const game = new Phaser.Game(config);
 
     function preload() {
         this.load.spineBinary("spineboy-data", "assets/spineboy-pro.skel");
@@ -38,11 +38,11 @@
     }
 
     function create() {
-        let spineboy = this.add.spine(250, 500, 'spineboy-data', "spineboy-atlas");
+        const spineboy = this.add.spine(250, 500, 'spineboy-data', "spineboy-atlas");
         spineboy.scale = 0.5;
         spineboy.animationState.setAnimation(0, "walk", true);
 
-        let spineboy2 = this.add.spine(550, 500, 'spineboy-data', "spineboy-atlas");
+        const spineboy2 = this.add.spine(550, 500, 'spineboy-data', "spineboy-atlas");
         spineboy2.scale = 0.5;
         spineboy2.animationState.setAnimation(0, "run", true);