Dispose the cancellation callbacks used in Razor document synchronization.

Author: JoeRobich

src/razor/src/document/razorDocumentSynchronizer.ts

@@ -119,6 +119,8 @@ export class RazorDocumentSynchronizer {
     }
 
     private removeSynchronization(context: SynchronizationContext) {
+        context.dispose();
+
         const documentKey = getUriPath(context.projectedDocument.uri);
         const synchronizations = this.synchronizations[documentKey];
         clearTimeout(context.timeoutId);
@@ -167,6 +169,11 @@ export class RazorDocumentSynchronizer {
                     reject(reason);
                 }
             },
+            dispose: () => {
+                while (rejectionsForCancel.length > 0) {
+                    rejectionsForCancel.pop();
+                }
+            },
             projectedDocumentSynchronized,
             onProjectedDocumentSynchronized,
             projectedTextDocumentSynchronized,
@@ -271,4 +278,5 @@ interface SynchronizationContext {
     readonly projectedTextDocumentSynchronized: () => void;
     readonly onProjectedTextDocumentSynchronized: Promise<void>;
     readonly cancel: (reason: string) => void;
+    readonly dispose: () => void;
 }