appwrite/docs/examples/1.7.x/server-deno/examples/databases/decrement-document-attribute.md

import { Client, Databases } from "https://deno.land/x/appwrite/mod.ts";

const client = new Client()
    .setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
    .setProject('<YOUR_PROJECT_ID>') // Your project ID
    .setKey('<YOUR_API_KEY>'); // Your secret API key

const databases = new Databases(client);

const response = await databases.decrementDocumentAttribute(
    '<DATABASE_ID>', // databaseId
    '<COLLECTION_ID>', // collectionId
    '<DOCUMENT_ID>', // documentId
    '', // attribute
    null, // value (optional)
    null // min (optional)
);