diff --git a/src/components/button/button-base.ts b/src/components/button/button-base.ts
index 354658f26..43fd57ccb 100644
--- a/src/components/button/button-base.ts
+++ b/src/components/button/button-base.ts
@@ -157,6 +157,7 @@ export abstract class IgcButtonBaseComponent extends EventEmitterMixin<
   }
 
   /* blazorCSSuppress */
+  /* alternateType: object */
   /**
    * The target element for the invoker command. Resolved from the `commandfor` ID.
    */
@@ -165,6 +166,7 @@ export abstract class IgcButtonBaseComponent extends EventEmitterMixin<
   }
 
   /* blazorCSSuppress */
+  /* alternateType: object */
   public set commandForElement(value: Element | null) {
     this._commandForElement = value;
     this.requestUpdate();
diff --git a/src/components/chat/chat.ts b/src/components/chat/chat.ts
index ca1356a4d..a1bcf0309 100644
--- a/src/components/chat/chat.ts
+++ b/src/components/chat/chat.ts
@@ -312,6 +312,7 @@ export default class IgcChatComponent extends EventEmitterMixin<
     return this._state.options;
   }
 
+  /* blazorSuppress */
   /**
    * The resource strings of the chat.
    */
diff --git a/src/components/highlight/service.ts b/src/components/highlight/service.ts
index 1d43a9d34..b24143fd4 100644
--- a/src/components/highlight/service.ts
+++ b/src/components/highlight/service.ts
@@ -10,13 +10,14 @@ import type IgcHighlightComponent from './highlight.js';
 
 type Match = { node: Node; indices: [start: number, end: number] };
 
+/* jsonAPIPlainObject */
 /**
  * Options for controlling navigation behavior when moving the active highlight.
  */
-export type HighlightNavigation = {
+export interface HighlightNavigation {
   /** If true, prevents the component from scrolling the new active match into view. */
   preventScroll?: boolean;
-};
+}
 
 function* matchText(
   nodes: IterableIterator<Node>,
diff --git a/src/components/splitter/types.ts b/src/components/splitter/types.ts
index 0e01ecece..5077ab58e 100644
--- a/src/components/splitter/types.ts
+++ b/src/components/splitter/types.ts
@@ -25,6 +25,7 @@ interface SplitterResizeState {
   dragPointerId: number;
 }
 
+/* jsonAPIPlainObject */
 interface IgcSplitterResizeEventArgs {
   /** The current size of the start panel in pixels */
   startPanelSize: number;