fix(settings): add missing types

add missing export close #382

src/aurelia-dialog.ts

@@ -19,6 +19,7 @@ export * from './dialog-settings';
 export * from './dialog-configuration';
 export * from './renderer';
 export * from './dialog-cancel-error';
+export * from './dialog-close-error';
 export * from './dialog-result';
 export * from './dialog-service';
 export * from './dialog-controller';

src/dialog-settings.ts

@@ -92,6 +92,14 @@ export interface DialogSettings {
    * When invoked the function is passed the dialog container and the dialog overlay elements.
    */
   position?: (dialogContainer: Element, dialogOverlay?: Element) => void;
+
+  /**
+   * This function is called when a dialog closes to restore focus to the last
+   * element that was focused when the dialog opened. It can be overridden in
+   * general settings, or on a case by case basis by providing an override when
+   * a particular dialog is opened.
+   */
+  restoreFocus?: (lastActiveElement: HTMLElement) => void;
 }
 
 /**
@@ -105,4 +113,5 @@ export class DefaultDialogSettings implements DialogSettings {
   public rejectOnCancel = false;
   public ignoreTransitions = false;
   public position?: (dialogContainer: Element, dialogOverlay: Element) => void;
+  public restoreFocus = (lastActiveElement: HTMLElement) => lastActiveElement.focus();
 }