Estoy tratando de implementar una función en la nube que actualiza un índice de búsqueda de Algolia cada vez que se crea un nuevo documento en mi Firestore. Todo parece comenzar bien, pero luego, al final, se equivoca. He revisado los documentos y parece que mi sintaxis es correcta, así que no estoy seguro de qué hacer en este momento. El registro de Cloud Functions no apunta a nada y solo repite el error que recibí a continuación

Mensaje de error:

=== Deploying to 'test-ffdbb'...

i  deploying functions
i  functions: ensuring necessary APIs are enabled...
i  runtimeconfig: ensuring necessary APIs are enabled...
+  runtimeconfig: all necessary APIs are enabled
+  functions: all necessary APIs are enabled
i  functions: preparing functions directory for uploading...
i  functions: packaged functions (1.25 KB) for uploading
+  functions: functions folder uploaded successfully
i  functions: updating function onProductCreated...
!  functions[onProductCreated]: Deployment error.
Failed to configure trigger providers/cloud.firestore/eventTypes/[email protected] (onProductCreated)

Mi código:

const functions = require('firebase-functions');
const algoliasearch = require('algoliasearch');

// App ID and API Key are stored in functions config variables
const ALGOLIA_ID = functions.config().algolia.app_id;
const ALGOLIA_ADMIN_KEY = functions.config().algolia.api_key;

const ALGOLIA_INDEX_NAME = "Firestore";
const client = algoliasearch(ALGOLIA_ID, ALGOLIA_ADMIN_KEY);

// Update the search index every time a blog post is written.
exports.onProductCreated = functions.firestore
.document("Product Catalog/{id}")
.onCreate(event => {
  const product = event.data.data();
  product.objectID = event.params.postId;

  const index = client.initIndex(ALGOLIA_INDEX_NAME);
  return index.saveObject(product);
});

package.json:

{
  "name": "functions",
  "description": "Cloud Functions for Firebase",
  "scripts": {
    "serve": "firebase serve --only functions",
    "shell": "firebase experimental:functions:shell",
    "start": "npm run shell",
    "deploy": "firebase deploy --only functions",
    "logs": "firebase functions:log"
  },
  "dependencies": {
    "@google-cloud/firestore": "^0.8.2",
    "algoliasearch": "^3.24.5",
    "firebase-admin": "~5.4.2",
    "firebase-functions": "^0.7.1"
  },
  "private": true
}