From d822c88a83e3d82ee6d99935ff78f196823d5781 Mon Sep 17 00:00:00 2001
From: "Jay Freeman (saurik)" <saurik@saurik.com>
Date: Mon, 23 Oct 2017 23:36:12 -0700
Subject: [PATCH] Provide an API that can be used by weak sets/maps.

---
 lib/index.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/index.ts b/lib/index.ts
index 881b0fe..e2f7022 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -21,9 +21,11 @@
 
 export abstract class Resource {
     private retainers: number;
+    public finalizes: Array<() => void>;
 
     constructor() {
         this.retainers = 0;
+        this.finalizes = [];
     }
 
     public retain(): void {
@@ -40,6 +42,8 @@ export abstract class Resource {
             if (prototype.hasOwnProperty("@resource"))
                 for (const property of (prototype as any)["@resource"] as string[])
                     (this as any)[property] = null;
+        for (const finalizes of this.finalizes)
+            finalizes();
     }
 }
 
-- 
2.47.2