diff --git a/shared/error-utils/index.mjs b/shared/error-utils/index.mjs
index 8a6f22f..3357e13 100644
--- a/shared/error-utils/index.mjs
+++ b/shared/error-utils/index.mjs
@@ -1,4 +1,10 @@
+/**
+ * Represents an error that is thrown when the calling a pure virtual method.
+ * @class
+ * @extends {Error}
+ */
 export class VirtualMethodNotImplementedError extends Error {
+	/** @constructor */
 	constructor() {
 		super('virtual method not implemented.');
 	}
diff --git a/shared/utility/queue.mjs b/shared/utility/queue.mjs
index 96a9d08..9ff8574 100644
--- a/shared/utility/queue.mjs
+++ b/shared/utility/queue.mjs
@@ -102,7 +102,7 @@ export class Queue {
 
     /**
      * Returns an iterator that allows iterating through the elements of the queue.
-     * @returns {*} elements of the queue.
+     * @yields {*} elements of the queue.
      * @generator
      */
     *[Symbol.iterator]() {