Initial Move from Azure DevOps to GitHub

src/Common/IteratorUtilities.ts

@@ -0,0 +1,32 @@
+import { QueryResults } from "../Contracts/ViewModels";
+
+interface QueryResponse {
+  resources: any[];
+  hasMoreResults: boolean;
+  activityId: string;
+  requestCharge: number;
+}
+
+export interface MinimalQueryIterator {
+  fetchNext: () => Promise<QueryResponse>;
+}
+
+// Pick<QueryIterator<any>, "fetchNext">;
+
+export function nextPage(documentsIterator: MinimalQueryIterator, firstItemIndex: number): Promise<QueryResults> {
+  return documentsIterator.fetchNext().then(response => {
+    const documents = response.resources;
+    const headers = (response as any).headers || {}; // TODO this is a private key. Remove any
+    const itemCount = (documents && documents.length) || 0;
+    return {
+      documents,
+      hasMoreResults: response.hasMoreResults,
+      itemCount,
+      firstItemIndex: Number(firstItemIndex) + 1,
+      lastItemIndex: Number(firstItemIndex) + Number(itemCount),
+      headers,
+      activityId: response.activityId,
+      requestCharge: response.requestCharge
+    };
+  });
+}