snowflake and cleaning up classes

webpage/snowflake.ts

@@ -0,0 +1,53 @@
+class SnowFlake<x>{
+    public readonly id:string;
+    private static readonly SnowFlakes:Map<any,Map<string,WeakRef<SnowFlake<any>>>>=new Map();
+    private static readonly FinalizationRegistry=new FinalizationRegistry((id:string)=>{
+        SnowFlake.SnowFlakes.delete(id);
+    });
+    private obj:x;
+    constructor(id:string,obj:x){
+        if(!obj){
+           this.id=id;
+           return;
+        }
+        if(!SnowFlake.SnowFlakes.get(obj.constructor)){
+           SnowFlake.SnowFlakes.set(obj.constructor,new Map());
+        }
+        if(SnowFlake.SnowFlakes.get(obj.constructor).get(id)){
+            const snowflake=SnowFlake.SnowFlakes.get(obj.constructor).get(id).deref();
+            snowflake.obj=obj;
+            return snowflake;
+        }
+        this.id=id;
+        SnowFlake.SnowFlakes.get(obj.constructor).set(id,new WeakRef(this));
+        SnowFlake.FinalizationRegistry.register(this,id);
+        this.obj=obj;
+    }
+    static getSnowFlakeFromID(id:string,type:any):SnowFlake<any>{
+        if(!SnowFlake.SnowFlakes.get(type)){
+            SnowFlake.SnowFlakes.set(type,new Map());
+        }
+        const snowflake=SnowFlake.SnowFlakes.get(type).get(id);
+        if(snowflake){
+            return snowflake.deref();
+        }
+        {
+            const snowflake=new SnowFlake(id,undefined);
+
+            SnowFlake.SnowFlakes.get(type).set(id,new WeakRef(snowflake));
+            SnowFlake.FinalizationRegistry.register(snowflake,id);
+
+            return snowflake;
+        }
+    }
+    getUnixTime():number{
+        return Number((BigInt(this.id)>>22n)+1420070400000n);
+    }
+    toString(){
+        return this.id;
+    }
+    getObject():x{
+        return this.obj;
+    }
+}
+export {SnowFlake};