fix: resolve potential errors during garbage collection process

README.md

@@ -102,7 +102,7 @@ import {
     ValueComparator,
     NumericComparator,
     StringComparator
-  } from 'https://cdn.jsdelivr.net/npm/serializable-bptree@5.x.x/dist/esm/index.min.js'
+  } from 'https://cdn.jsdelivr.net/npm/serializable-bptree@5/+esm'
 </script>
 ```
 

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@izure/serializable-bptree",
-  "version": "5.0.2",
+  "version": "5.0.3",
   "description": "Store the B+tree flexibly, not only in-memory.",
   "author": "izure1 <[email protected]>",
   "license": "MIT",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "serializable-bptree",
-  "version": "5.0.2",
+  "version": "5.0.3",
   "description": "Store the B+tree flexibly, not only in-memory.",
   "types": "./dist/types/index.d.ts",
   "main": "./dist/cjs/index.cjs",

src/utils/InvertedWeakMap.ts

@@ -12,6 +12,13 @@ export class InvertedWeakMap<K extends string|number|symbol, V extends WeakKey>
   }
 
   delete(key: K): boolean {
+    const ref = this._map.get(key)
+    if (ref) {
+      const raw = ref.deref()
+      if (raw !== undefined) {
+        this._registry.unregister(raw)
+      }
+    }
     return this._map.delete(key)
   }