improve item registry

demo/main.ts

@@ -113,7 +113,7 @@ Promise.all([
 		Object.keys(item_components[id]).forEach(c_id => {
 			components.set(c_id, jsonToNbt(item_components[id][c_id]))
 		})
-		Item.getRegistry().register(Identifier.create(id), new Item(components))
+		Item.REGISTRY.register(Identifier.create(id), new Item(components))
 	})
 
 	const atlasCanvas = document.createElement('canvas')

src/core/Item.ts

@@ -1,16 +1,10 @@
 import { NbtTag } from "../nbt/index.js"
-import { Identifier, Registry } from "./index.js"
+import { Identifier } from "./index.js"
+import { Registry } from "./Registry.js"
 
 
 export class Item {
-	private static REGISTRY: Registry<Item>
-
-	public static getRegistry() {
-		if (this.REGISTRY === undefined){
-			this.REGISTRY = Registry.createAndRegister<Item>('item')
-		}
-		return this.REGISTRY
-	}
+	public static REGISTRY = Registry.createAndRegister<Item>('item')
 
 	constructor(
 		public components: Map<string, NbtTag> = new Map(),

src/core/ItemStack.ts

@@ -14,7 +14,7 @@ export class ItemStack {
 		public count: number,
 		public readonly components: Map<string, NbtTag> = new Map(),
 	) {
-		this.item = Holder.reference(Item.getRegistry(), id, false)
+		this.item = Holder.reference(Item.REGISTRY, id, false)
 	}
 
 	public getComponent<T>(key: string | Identifier, reader: (tag: NbtTag) => T, includeDefaultComponents: boolean = true): T | undefined {