mongodb - google cloud functions write example

index.js

 const { MongoClient } = require("mongodb");
    // // Replace the uri string with your MongoDB deployment's connection string.
    const url = "monGoDb uri";


  // //get all rows from collections
exports.helloWorld = (req, res) => {

  MongoClient.connect(url, function(err, db) {
  if (err) throw res.status(200).send(err);
    console.log("Connected successfully to server");
    var dbo = db.db("DataBaseName");
 dbo.collection("Collectio_name").find({}).toArray(function(err, result) {
         if (err) throw err;
      // console.log(result);
      res.status(200).send(result);
      db.close();
    });
  });
  };

package.json

{
  "name": "sample-http",
  "version": "0.0.1",
    "dependencies": {
    "babel-runtime": "^6.23.0",
    "node": "^16.6.1",
    "mongodb": "^4.1.0"
  }
}