Fixed an issue with not clearing registered interpreters when their m…

…achines reached final states (#3801)
statelyai · Jan 30, 2023 · 10d0ba7 · 10d0ba7
1 parent 51d2546
commit 10d0ba7
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diff --git a/.changeset/silent-tips-occur.md b/.changeset/silent-tips-occur.md
@@ -0,0 +1,5 @@
+---
+'xstate': patch
+---
+
+Fixed an issue with not clearing registered interpreters when their machines reached final states.
diff --git a/packages/core/src/interpreter.ts b/packages/core/src/interpreter.ts
@@ -130,7 +130,8 @@ export class Interpreter<
     ActorRef<
       TEvent,
       State<TContext, TEvent, TStateSchema, TTypestate, TResolvedTypesMeta>
-    > {
+    >
+{
   /**
    * The default interpreter options:
    *
@@ -208,9 +209,8 @@ export class Interpreter<
   public children: Map<string | number, ActorRef<any>> = new Map();
   private forwardTo: Set<string> = new Set();
 
-  private _outgoingQueue: Array<
-    [{ send: (ev: unknown) => void }, unknown]
-  > = [];
+  private _outgoingQueue: Array<[{ send: (ev: unknown) => void }, unknown]> =
+    [];
 
   // Dev Tools
   private devTools?: any;
@@ -332,7 +332,7 @@ export class Interpreter<
     ) {
       this.execute(this.state);
     } else {
-      let item: typeof this._outgoingQueue[number] | undefined;
+      let item: (typeof this._outgoingQueue)[number] | undefined;
       while ((item = this._outgoingQueue.shift())) {
         item[0].send(item[1]);
       }
@@ -382,6 +382,7 @@ export class Interpreter<
       }
       this._stop();
       this._stopChildren();
+      registry.free(this.sessionId);
     }
   }
   /*