Simplification of the types

Instead of using an enum, I use an union.

src/types/bridge-events.d.ts

@@ -6,145 +6,141 @@
 /**
  * Events that the sidebar sends to the host
  */
-type SidebarToHostEvent = {
+export type SidebarToHostEvent =
   /**
    * The sidebar is asking the host to open the sidebar.
    */
-  CLOSE_SIDEBAR: 'closeSidebar';
+  | 'closeSidebar'
 
   /**
    * The updated feature flags for the user
    */
-  FEATURE_FLAGS_UPDATED: 'featureFlagsUpdated';
+  | 'featureFlagsUpdated'
 
   /**
    * The sidebar is asking the host to open the partner site help page.
    */
-  HELP_REQUESTED: 'helpRequested';
+  | 'helpRequested'
 
   /**
    * The sidebar is asking the host to do a partner site log in
    * (for example, pop up a log in window). This is used when the client is
    * embedded in a partner site and a log in button in the client is clicked.
    */
-  LOGIN_REQUESTED: 'loginRequested';
+  | 'loginRequested'
 
   /**
    * The sidebar is asking the host to do a partner site log out.
    * This is used when the client is embedded in a partner site and a log out
    * button in the client is clicked.
    */
-  LOGOUT_REQUESTED: 'logoutRequested';
+  | 'logoutRequested'
 
   /**
    * The sidebar is asking the host to open the notebook.
    */
-  OPEN_NOTEBOOK: 'openNotebook';
+  | 'openNotebook'
 
   /**
    * The sidebar is asking the host to open the sidebar.
    */
-  OPEN_SIDEBAR: 'openSidebar';
+  | 'openSidebar'
 
   /**
    * The sidebar is asking the host to open the partner site profile page.
    */
-  PROFILE_REQUESTED: 'profileRequested';
+  | 'profileRequested'
 
   /**
    * The sidebar is updating the number of annotations in the partner site.
    */
-  PUBLIC_ANNOTATION_COUNT_CHANGED: 'publicAnnotationCountChanged';
+  | 'publicAnnotationCountChanged'
 
   /**
    * The sidebar is asking the host to do a partner site sign-up.
    */
-  SIGNUP_REQUESTED: 'signupRequested';
-};
+  | 'signupRequested';
 
 /**
  * Events that the host sends to the sidebar
  */
-type HostToSidebarEvent = {
+type HostToSidebarEvent =
   /**
    * The host is asking the sidebar to delete a frame using an identifier
    */
-  DESTROY_FRAME: 'destroyFrame';
+  | 'destroyFrame'
 
   /**
    * The host informs the sidebar that the sidebar has been opened
    */
-  SIDEBAR_OPENED: 'sidebarOpened';
-};
+  | 'sidebarOpened';
 
 /**
  * Events that the sidebar sends to the guest/s
  */
-type SidebarToGuestEvent = {
+export type SidebarToGuestEvent =
   /**
    * The sidebar is asking the guest/s to focus on certain annotations.
    */
-  FOCUS_ANNOTATIONS: 'focusAnnotations';
+  | 'focusAnnotations'
 
   /**
    * The sidebar is asking the guest/s to get the document metadata.
    */
-  GET_DOCUMENT_INFO: 'getDocumentInfo';
+  | 'getDocumentInfo'
 
   /**
    * The sidebar is asking the guest/s to load annotations.
    */
-  LOAD_ANNOTATIONS: 'loadAnnotations';
+  | 'loadAnnotations'
 
   /**
    * The sidebar is asking the guest/s to scroll to certain annotation.
    */
-  SCROLL_TO_ANNOTATION: 'scrollToAnnotation';
+  | 'scrollToAnnotation'
 
   /**
    * The sidebar is asking the guest/s to set the annotation highlights on/off.
    */
-  SET_VISIBLE_HIGHLIGHTS: 'setVisibleHighlights';
-};
+  | 'setVisibleHighlights';
 
 /**
  * Events that the guest sends to the sidebar
  */
-type GuestToSidebarEvent = {
+export type GuestToSidebarEvent =
   /**
    * The guest is asking the sidebar to create an annotation
    */
-  BEFORE_CREATE_ANNOTATION: 'beforeCreateAnnotation';
+  | 'beforeCreateAnnotation'
 
   /**
    * The guest is asking the sidebar to delete an annotation
    */
-  DELETE_ANNOTATION: 'deleteAnnotation';
+  | 'deleteAnnotation'
 
   /**
    * The guest is asking the sidebar to open the sidebar.
    */
-  OPEN_SIDEBAR: 'openSidebar';
+  | 'openSidebar'
 
   /**
    * The guest is asking the sidebar to display some annotations
    */
-  SHOW_ANNOTATIONS: 'showAnnotations';
+  | 'showAnnotations'
 
   /**
    * The guest is asking the sidebar to sync the annotations
    */
-  SYNC: 'sync';
+  | 'sync'
 
   /**
    * The guest is asking the host to toggle some annotations
    */
-  TOGGLE_ANNOTATION_SELECTION: 'toggleAnnotationSelection';
-};
+  | 'toggleAnnotationSelection';
 
 export type BridgeEvent =
   | 'connect'
-  | SidebarToHostEvent[keyof SidebarToHostEvent]
-  | HostToSidebarEvent[keyof HostToSidebarEvent]
-  | SidebarToGuestEvent[keyof SidebarToGuestEvent]
-  | GuestToSidebarEvent[keyof GuestToSidebarEvent];
+  | SidebarToHostEvent
+  | HostToSidebarEvent
+  | SidebarToGuestEvent
+  | GuestToSidebarEvent;