diff --git a/README.md b/README.md
index 1d30f7a..43e6901 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ Please contribute a PR to add instructions for other setups or improve existing
 
 Most or all of these should be fixed in the generator over time.
 
-- `Array` changed to `Iterable` for WebIDL `sequence`s in argument positions.
+- `Array` changed to `Iterable` for WebIDL `sequence`s in argument positions (but not in return positions).
 - `any` changed to `object` for WebIDL `object`.
 - `| SharedArrayBuffer` added for `[AllowShared] BufferSource`.
 
diff --git a/dist/index.d.ts b/dist/index.d.ts
index 48fbec5..36e615a 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -653,6 +653,11 @@ interface GPUCanvasConfiguration {
   alphaMode?: GPUCanvasAlphaMode;
 }
 
+type GPUCanvasConfigurationOut =
+  Required<GPUCanvasConfiguration> & {
+    viewFormats: GPUTextureFormat[];
+  };
+
 interface GPUCanvasToneMapping {
   mode?: GPUCanvasToneMappingMode;
 }
@@ -2073,7 +2078,7 @@ interface GPUCanvasContext {
   /**
    * Returns the context configuration.
    */
-  getConfiguration(): GPUCanvasConfiguration | null;
+  getConfiguration(): GPUCanvasConfigurationOut | null;
   /**
    * Get the {@link GPUTexture} that will be composited to the document by the {@link GPUCanvasContext}
    * next.