Explorer.ts Cleanup (#341)

Co-authored-by: victor-meng <56978073+victor-meng@users.noreply.github.com>

src/Platform/Emulator/Main.ts

@@ -19,6 +19,7 @@ export function initializeExplorer(): Explorer {
       cassandraEndpoint: ""
     }
   });
+
   explorer.isAccountReady(true);
   return explorer;
 }

src/Platform/Hosted/Main.ts

@@ -268,7 +268,7 @@ export default class Main {
     masterKey?: string /* master key extracted from connection string if available */,
     account?: DatabaseAccount,
     authorizationToken?: string /* access key */
-  ): Q.Promise<void> {
+  ): void {
     const serverId: string = AuthHeadersUtil.serverId;
     const authType: string = (<any>window).authType;
     const accountResourceId =
@@ -373,7 +373,7 @@ export default class Main {
       });
     }
 
-    return Q.reject(`Unsupported AuthType ${authType}`);
+    throw new Error(`Unsupported AuthType ${authType}`);
   }
 
   private static _instantiateExplorer(): Explorer {

src/Platform/Portal/Main.ts

@@ -1,9 +1,23 @@
 import "../../Explorer/Tables/DataTable/DataTableBindingManager";
 import Explorer from "../../Explorer/Explorer";
+import { handleMessage } from "../../Controls/Heatmap/Heatmap";
 
 export function initializeExplorer(): Explorer {
   const explorer = new Explorer();
 
+  // In development mode, try to load the iframe message from session storage.
+  // This allows webpack hot reload to funciton properly
+  if (process.env.NODE_ENV === "development") {
+    const initMessage = sessionStorage.getItem("portalDataExplorerInitMessage");
+    if (initMessage) {
+      const message = JSON.parse(initMessage);
+      console.warn("Loaded cached portal iframe message from session storage");
+      console.dir(message);
+      explorer.initDataExplorerWithFrameInputs(message);
+    }
+  }
+
   window.addEventListener("message", explorer.handleMessage.bind(explorer), false);
+
   return explorer;
 }