diff --git a/src/registry.ts b/src/registry.ts
new file mode 100644
index 0000000..26ee2d8
--- /dev/null
+++ b/src/registry.ts
@@ -0,0 +1,12 @@
+export class SerializedRegistry {
+    private _registeredIds: string[]
+    constructor() {}
+    get registeredIds() {
+        return this._registeredIds;
+    }
+    public register(id: string) {
+        if (this._registeredIds.includes(id))
+            throw Error(`${id} is already used`)
+        this._registeredIds.push(id);
+    }
+}
\ No newline at end of file