diff --git a/src/common/IdleTaskQueue.ts b/src/common/IdleTaskQueue.ts
index 6d3b341b..240a26ff 100644
--- a/src/common/IdleTaskQueue.ts
+++ b/src/common/IdleTaskQueue.ts
@@ -3,16 +3,27 @@
  * @license MIT
  */
 
+/**
+ * A queue of that runs tasks over several idle callbacks, trying to maintain the specified
+ * frame rate. The tasks will run in the order they are enqueued, but they will run some time later,
+ * and care should be taken to ensure they're non-urgent and will not introduce race conditions.
+ */
 export class IdleTaskQueue {
   private _tasks: Function[] = [];
   private _idleCallback?: number;
   private _maxTaskDuration: number;
   private _i = 0;
 
+  /**
+   * @param targetFps The target frame rate.
+   */
   constructor(targetFps: number = 240) {
     this._maxTaskDuration = 1000 / targetFps;
   }
 
+  /**
+   * Adds a task to the queue which will run in a future idle callback.
+   */
   public enqueue(task: Function): void {
     this._tasks.push(task);
     this._start();