stop sending unref if disconnected

Author: arcticnotes

lib/node/node-wsh.js

@@ -17,6 +17,7 @@ export class WindowsScriptingHost extends EventEmitter {
 	}
 
 	#syncline;
+	#closed = false;
 	#finalizer = new FinalizationRegistry( this.#finalized.bind( this));
 	#ref2proxy = new Map();
 	#proxy2ref = new WeakMap();
@@ -99,6 +100,7 @@ export class WindowsScriptingHost extends EventEmitter {
 	}
 
 	async disconnect() {
+		this.#closed = true;
 		await this.#syncline.close();
 	}
 
@@ -121,7 +123,8 @@ export class WindowsScriptingHost extends EventEmitter {
 	#finalized( ref) {
 		if( this.#ref2proxy.get( ref).deref() === undefined) // otherwise, it's overwritten by a refreshed proxy
 			this.#ref2proxy.delete( ref);
-		const output = this.#syncline.exchange( JSON.stringify( [ 'unref', ref]));
+		if( !this.#closed)
+			this.#syncline.exchange( JSON.stringify( [ 'unref', ref]));
 		this.emit( 'unref', ref);
 	}