Ensuring weakermap doesnt drop reassigned keys after delete or clear

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "weaker",
-	"version": "0.0.9",
+	"version": "0.0.10",
 	"description": "Weaker maps by value, and enumerable weaker sets",
 	"author": "Sean Morris",
 	"main": "index.mjs",

weakermap/WeakerMap.mjs

@@ -1,15 +1,26 @@
-export class WeakerMap
-{
-	map = new Map;
+const getRegistry = weakerMap => {
+	const registry = new FinalizationRegistry(key => {
+		if(weakerMap.registry !== registry)
+		{
+			return;
+		}
 
-	registry = new FinalizationRegistry(key => {
-		if(this.map.has(key) && this.map.get(key).deref())
+		if(weakerMap.map.has(key) && weakerMap.map.get(key).deref())
 		{
 			return;
 		}
-		this.delete(key);
+
+		weakerMap.delete(key);
 	});
 
+	return registry;
+};
+
+export class WeakerMap
+{
+	map = new Map;
+	registry = getRegistry(this);
+
 	constructor(entries)
 	{
 		entries && entries.forEach(([key, value]) => this.set(key, value));
@@ -22,11 +33,18 @@ export class WeakerMap
 
 	clear()
 	{
+		this.registry = getRegistry(this);
 		this.map.clear();
 	}
 
 	delete(key)
 	{
+		if(!this.has(key))
+		{
+			return;
+		}
+
+		this.registry.unregister(this.get(key));
 		this.map.delete(key);
 	}
 

weakermap/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "weakermap",
-	"version": "0.0.9",
+	"version": "0.0.10",
 	"author": "Sean Morris",
 	"description": "A WeakerMap is an enumerable Map with with weak values rather than keys",
 	"main": "WeakerMap.mjs",

weakerset/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "weakerset",
-	"version": "0.0.9",
+	"version": "0.0.10",
 	"author": "Sean Morris",
 	"description": "A WeakerSet an enumerable WeakSet",
 	"main": "WeakerSet.mjs",