Add d.ts

plugins/behaviors/effects/AddGlowProperties.d.ts

@@ -0,0 +1,13 @@
+export default AddGlowProperties;
+
+declare namespace AddGlowProperties {
+    interface GlowGameObject extends Phaser.GameObjects.GameObject {
+        glowColor: number | null | false;
+        glowOuterStrength: number;
+        glowInnerStrength: number;
+    }
+}
+
+declare function AddGlowProperties(
+    gameObject: Phaser.GameObjects.GameObject
+): AddGlowProperties.GlowGameObject;

plugins/behaviors/effects/AddGrayscaleProperties.d.ts

@@ -0,0 +1,11 @@
+export default AddGrayscaleProperties;
+
+declare namespace AddGrayscaleProperties {
+    interface GrayscaleGameObject extends Phaser.GameObjects.GameObject {
+        grayscale: number | null | false;
+    }
+}
+
+declare function AddGrayscaleProperties(
+    gameObject: Phaser.GameObjects.GameObject
+): AddGrayscaleProperties.GrayscaleGameObject;