INNER CODE UNIT · JavaScript

Promise

mongodb-developer/nodejs-quickstart · changeStreams.js:65

    return new Promise((resolve) => {
        setTimeout(() => {
            console.log("Closing the change stream");
            changeStream.close();
            resolve();
        }, timeInMs)
    })
};

/**
 * Monitor listings in the listingsAndReviews collections for changes
 * This function uses the on() function from the EventEmitter class to monitor changes
 * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
 * @param {Number} timeInMs The amount of time in ms to monitor listings
 * @param {Object} pipeline An aggregation pipeline that determines which change events should be output to the console
 */
async function monitorListingsUsingEventEmitter(client, timeInMs = 60000, pipeline = []) {
    const collection = client.db("sample_airbnb").collection("listingsAndReviews");

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