I have this below code it works correctly but should I close the connection after returning the data? If yes so how to close the connection?

// project.db.js

 const { MongoClient, ObjectId } = require("mongodb");
 const { mongo_uri, dbName } = require("../config/constants");

// connect method
 function connection() {
    return MongoClient.connect(mongo_uri);
 }
// async function which read data
  exports.allProject_tasks = async (space_id) => {
        try {
        const result = await connection();
        const db = await result.db(dbName);
        const payload = await db
       .collection("tasks")
         .find({
            user_space_id: ObjectId(space_id),
          })
     .toArray();
     return payload;
 } catch {
    return 400;
}
  };