How to use the azure-iot-device-http.clientFromConnectionString function in azure-iot-device-http

const run = async() => {
    try {
        console.log('Initializing Module Client.');
        const moduleClient = ModuleClient.fromConnectionString(process.env.DEVICE_CONNECTION_STRING, Mqtt);
        // We use the iot hub connection string to create the client rather than the actual event hub end point
        console.log('Initializing Event Hub Client.');
        const eventHubClient = await EventHubClient.createFromIotHubConnectionString(process.env.IOTHUB_CONNECTION_STRING); 
        console.log('Initializing HTTP Device Client.');
        const httpClient = HttpClientFromConnectionString(process.env.DEVICE_CONNECTION_STRING);
        console.log('Initialized clients!');

        console.log('Getting information from Event Hub.');
        const partitionIds = await eventHubClient.getPartitionIds(); //read more about partitions https://docs.microsoft.com/en-us/azure/event-hubs/event-hubs-features#partitions
        const startingPosition = EventPosition.fromEnqueuedTime(Date.now() - 1000); //subtracting a second to account for delay
        
        const eventLabel = 'beepBoop'; //label our events
        const sendDummyMessage = m => moduleClient.sendOutputEvent(eventLabel, m); //send helper

        console.log('Creating messages to send to via Module Client');
        //generate some messages
        const messageCount = 10;
        const importantMessages = [...Array(messageCount).keys()].map(generateImportantMessage);

        console.log('Sending messages via Module Client.');
        //iterative send approach

// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

'use strict';

var clientFromConnectionString = require('azure-iot-device-http').clientFromConnectionString;
var Message = require('azure-iot-device').Message;

// String containing Hostname, Device Id & Device Key in the following formats:
//  "HostName=;DeviceId=;SharedAccessKey="
var connectionString = '[IoT Hub device connection string]';

var client = clientFromConnectionString(connectionString);

// Create a message and send it to the IoT hub every second
setInterval(function () {
  var windSpeed = 10 + (Math.random() * 4); // range: [10, 14]
  var data = JSON.stringify({
    deviceId: 'myFirstDevice',
    windSpeed: windSpeed
  });
  var message = new Message(data);
  message.properties.add('myproperty', 'myvalue');
  console.log('Sending message: ' + message.getData());
  client.sendEvent(message, printResultFor('send'));
}, 1000);

// Monitor messages from IoT Hub and print them in the console.
//  Note: In this sample, the polling interval is set to 1 second

vscode.window.showInputBox({ prompt: 'Enter message to send' }).then((message: string) => {
            if (message !== undefined) {
                try {
                    let client = clientFromConnectionString(deviceConnectionString);
                    client.sendEvent(new Message(JSON.stringify(message)), this.sendEventDone(true, client, label));
                }
                catch (e) {
                    this.outputLine(label, e);
                }
            }
        });
    }