Fix using instances as keys in tables

CHANGELOG.md

@@ -8,6 +8,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+-   Fixed using instances as keys in tables
+
 ## `0.6.5` - March 27th, 2023
 
 ### Changed

packages/lib-roblox/src/instance/mod.rs

@@ -1,6 +1,7 @@
 use std::{
     collections::{BTreeMap, HashMap, VecDeque},
     fmt,
+    hash::{Hash, Hasher},
     sync::RwLock,
 };
 
@@ -1136,6 +1137,12 @@ impl LuaUserData for Instance {
     }
 }
 
+impl Hash for Instance {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.dom_ref.hash(state)
+    }
+}
+
 impl fmt::Display for Instance {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(