[ts] Port of 0e16ef9c, 409bf9d6.

Added DrawOrderFolderTimeline.
Fixed AnimationStateTests for discarding a never applied entry.

spine-ts/spine-core/src/AnimationState.ts

@@ -1139,9 +1139,9 @@ export class EventQueue {
 		this.drainDisabled = true;
 
 		const listeners = this.animState.listeners;
-		const objects = this.objects;
 
-		for (let i = 0; i < objects.length; i += 2) {
+		for (let i = 0; i < this.objects.length; i += 2) {
+			const objects = this.objects;
 			const type = objects[i] as EventType;
 			const entry = objects[i + 1] as TrackEntry;
 			switch (type) {

spine-ts/spine-core/src/SkeletonData.ts

@@ -32,6 +32,7 @@ import type { BoneData } from "./BoneData.js";
 import type { ConstraintData } from "./ConstraintData.js";
 import type { EventData } from "./EventData.js";
 import type { Skin } from "./Skin.js";
+import { SliderData } from "./SliderData.js";
 import type { SlotData } from "./SlotData.js";
 
 /** Stores the setup pose and all of the stateless data for a skeleton.
@@ -143,6 +144,19 @@ export class SkeletonData {
 		return null;
 	}
 
+	/** Collects animations used by {@link SliderData slider constraints}.
+	 * <p>
+	 * Slider animations are designed to be applied by slider constraints rather than on their own. Applications that have a user
+	 * choose an animation may want to exclude them. */
+	findSliderAnimations (animations: Animation[]): Animation[] {
+		const constraints = this.constraints;
+		for (let i = 0, n = this.constraints.length; i < n; i++) {
+			const data = constraints[i];
+			if (data instanceof SliderData && data.animation != null) animations.push(data.animation);
+		}
+		return animations;
+	}
+
 	/** Finds an animation by comparing each animation's name. It is more efficient to cache the results of this method than to
 	 * call it multiple times.
 	 * @returns May be null. */