chore: update example snippets for mvi count items (#1115)

Add example snippets for MVI countItems in both the Web and Node.js vector index examples.

Because the cache examples sdk dependencies were out of date for latest leaderboard changes, we also updated those.

examples/nodejs/cache/package.json

@@ -32,7 +32,7 @@
     "typescript": "4.4.3"
   },
   "dependencies": {
-    "@gomomento/sdk": "^1.58.0"
+    "@gomomento/sdk": "^1.60.0"
   },
   "engines": {
     "node": ">=10.4.0"

examples/nodejs/vector-index/doc-example-files/doc-examples-nodejs-apis.ts

@@ -4,6 +4,7 @@ import {
   DeleteVectorIndex,
   ListVectorIndexes,
   PreviewVectorIndexClient,
+  VectorCountItems,
   VectorIndexConfigurations,
   VectorSearch,
   VectorSearchAndFetchVectors,
@@ -61,6 +62,15 @@ async function example_API_DeleteIndex(vectorClient: PreviewVectorIndexClient) {
   }
 }
 
+async function example_API_CountItems(vectorClient: PreviewVectorIndexClient) {
+  const result = await vectorClient.countItems('test-index');
+  if (result instanceof VectorCountItems.Success) {
+    console.log(`Found ${result.itemCount()} items`);
+  } else if (result instanceof VectorCountItems.Error) {
+    throw new Error(`An error occurred while counting items: ${result.errorCode()}: ${result.toString()}`);
+  }
+}
+
 async function example_API_UpsertItemBatch(vectorClient: PreviewVectorIndexClient) {
   const result = await vectorClient.upsertItemBatch('test-index', [
     {
@@ -142,6 +152,7 @@ async function main() {
   example_API_InstantiateVectorClient();
   await example_API_CreateIndex(vectorClient);
   await example_API_ListIndexes(vectorClient);
+  await example_API_CountItems(vectorClient);
   await example_API_UpsertItemBatch(vectorClient);
   await example_API_Search(vectorClient);
   await example_API_SearchAndFetchVectors(vectorClient);