Created Container parent class. Introduced soem fancy bugs.

Container.ts

@@ -0,0 +1,26 @@
+import type { Item } from "./data/data.ts";
+
+export default class Container {
+	protected items: Item[];
+
+	constructor(items: Item[]) {
+		this.items = items;
+	}
+
+	description(items: Item[]): string {
+		const vowels = ["a", "e", "i", "o", "u"];
+		const description = items
+			.map(({ name }, i) => {
+				let anItem = `${vowels.includes(name[0]) ? "an" : "a"} ${name}`;
+
+				if (i + 1 === items.length) {
+					anItem = `and ${anItem}`;
+				}
+
+				return anItem;
+			})
+			.join(", ");
+
+		return description;
+	}
+}