Initialize the Client and Variables

In this step, we will intialize the Vonage Client with some credentials and initialize some variables that will be needed later.

Key	Description
VONAGE_NUMBER	The phone number you are sending the message from. This is the number rented from Vonage when setting up the application.
TO_NUMBER	The phone number you are sending the message to.

Note: If your account is in the trial period, the TO_NUMBER can only be the phone number that you used to create the account. Also, don’t use a leading + or 00 when entering a phone number, start with the country code, for example 447700900000.

Copy this code into send-sms.js

const { Vonage } = require('@vonage/server-sdk');
const { SMS } = require('@vonage/messages');

const TO_NUMBER = ''
const VONAGE_NUMBER = process.env.VONAGE_NUMBER;

const vonage = new Vonage({
  apiKey: process.env.VONAGE_API_KEY,
  apiSecret: process.env.VONAGE_API_SECRET,
  applicationId: process.env.VONAGE_APPLICATION_ID,
  privateKey: process.env.VONAGE_PRIVATE_KEY,
});