diff --git a/src/foundry/client/pixi/core/containers/cached-container.d.mts b/src/foundry/client/pixi/core/containers/cached-container.d.mts
index 6ad68bac1..b7e5d0a37 100644
--- a/src/foundry/client/pixi/core/containers/cached-container.d.mts
+++ b/src/foundry/client/pixi/core/containers/cached-container.d.mts
@@ -1,3 +1,5 @@
+import type { NullishProps } from "../../../../../types/utils.d.mts";
+
 export {};
 
 declare global {
@@ -16,11 +18,11 @@ declare global {
      * The texture configuration to use for this cached container
      * @remarks Foundry marked as abstract
      */
-    static textureConfiguration: {
-      multisample?: PIXI.MSAA_QUALITY;
-      scaleMode?: PIXI.SCALE_MODES;
-      format?: PIXI.FORMATS;
-    };
+    static textureConfiguration: NullishProps<{
+      multisample: PIXI.MSAA_QUALITY;
+      scaleMode: PIXI.SCALE_MODES;
+      format: PIXI.FORMATS;
+    }>;
 
     /**
      * A map of render textures, linked to their render function and an optional RGBA clear color.
diff --git a/src/foundry/client/pixi/layers/effects/darkness-effects.d.mts b/src/foundry/client/pixi/layers/effects/darkness-effects.d.mts
index d038535c2..d231ddad9 100644
--- a/src/foundry/client/pixi/layers/effects/darkness-effects.d.mts
+++ b/src/foundry/client/pixi/layers/effects/darkness-effects.d.mts
@@ -1,7 +1,5 @@
 import type { AnyObject } from "../../../../../types/utils.d.mts";
 
-export {};
-
 declare global {
   /**
    * A layer of background alteration effects which change the appearance of the primary group render texture.
diff --git a/src/foundry/client/pixi/layers/effects/illumination-effects.d.mts b/src/foundry/client/pixi/layers/effects/illumination-effects.d.mts
index 8b079994c..2af564378 100644
--- a/src/foundry/client/pixi/layers/effects/illumination-effects.d.mts
+++ b/src/foundry/client/pixi/layers/effects/illumination-effects.d.mts
@@ -1,3 +1,5 @@
+import type { NullishProps } from "../../../../../types/utils.d.mts";
+
 export {};
 
 declare global {
@@ -114,12 +116,12 @@ declare global {
      * }
      * ```
      */
-    static override textureConfiguration: {
-      multisample?: PIXI.MSAA_QUALITY;
-      scaleMode?: PIXI.SCALE_MODES;
-      format?: PIXI.FORMATS;
-      mipmap?: PIXI.MIPMAP_MODES;
-    };
+    static override textureConfiguration: NullishProps<{
+      multisample: PIXI.MSAA_QUALITY;
+      scaleMode: PIXI.SCALE_MODES;
+      format: PIXI.FORMATS;
+      mipmap: PIXI.MIPMAP_MODES;
+    }>;
 
     /** @privateRemarks Including to protect duck typing due to overall similarities b/w DarknessLevelContainer and CachedContainer */
     #onChildChange(): void;
diff --git a/src/foundry/client/pixi/layers/effects/visibility.d.mts b/src/foundry/client/pixi/layers/effects/visibility.d.mts
index 4b9844c93..06730ad70 100644
--- a/src/foundry/client/pixi/layers/effects/visibility.d.mts
+++ b/src/foundry/client/pixi/layers/effects/visibility.d.mts
@@ -34,7 +34,7 @@ declare global {
      */
     visionModeData: {
       source: foundry.canvas.sources.PointVisionSource.Any | null;
-      activeLightingOptions: Record<string, unknown>;
+      activeLightingOptions: VisionMode["_source"]["lighting"];
     };
 
     /**
diff --git a/src/foundry/client/pixi/layers/effects/weather-effects.d.mts b/src/foundry/client/pixi/layers/effects/weather-effects.d.mts
index 8f62b005d..78850c667 100644
--- a/src/foundry/client/pixi/layers/effects/weather-effects.d.mts
+++ b/src/foundry/client/pixi/layers/effects/weather-effects.d.mts
@@ -155,7 +155,7 @@ declare global {
        * If the mask should be reversed.
        * @defaultValue `false`
        */
-      reverse?: boolean;
+      reverse?: boolean | undefined;
 
       /**
        * A texture which defines the mask region.