store cloning source on cloned scope

Author: lobsterkatie

packages/hub/src/scope.ts

@@ -75,6 +75,9 @@ export class Scope implements ScopeInterface {
   /** Request Mode Session Status */
   protected _requestSession?: RequestSession;
 
+  /** If the scope is a clone, the original scope from which the clone derived */
+  protected _parent?: Scope;
+
   /**
    * Inherit values from the parent scope.
    * @param scope to clone.
@@ -94,6 +97,7 @@ export class Scope implements ScopeInterface {
       newScope._fingerprint = scope._fingerprint;
       newScope._eventProcessors = [...scope._eventProcessors];
       newScope._requestSession = scope._requestSession;
+      (newScope as any)._parent = scope;
     }
     return newScope;
   }
@@ -297,6 +301,13 @@ export class Scope implements ScopeInterface {
     return this._session;
   }
 
+  /**
+   * @inheritDoc
+   */
+  public getParent(): Scope | undefined {
+    return this._parent;
+  }
+
   /**
    * @inheritDoc
    */

packages/types/src/scope.ts

@@ -132,6 +132,11 @@ export interface Scope {
    */
   setRequestSession(requestSession?: RequestSession): this;
 
+  /**
+   * The scope from which this scope was cloned, if any
+   */
+  getParent(): Scope | undefined;
+
   /**
    * Updates the scope with provided data. Can work in three variations:
    * - plain object containing updatable attributes