code for sending whatsapp messages to numbers in cell in typescript

To send WhatsApp messages to numbers in a cell using TypeScript, you can use Twilio's WhatsApp API and Node.js. Here's a step by step guide:

1. Sign up for a Twilio account and get a Twilio phone number that supports WhatsApp.
2. Install the Twilio Node.js Helper Library by running this command in your terminal:

index.tsx
npm install twilio
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3. Create a TypeScript file and import the Twilio library:

index.tsx
import * as twilio from 'twilio';
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4. Set the environment variables for your Twilio account SID and auth token:

index.tsx
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
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5. Authenticate your Twilio client with your account SID and auth token:

index.tsx
const client = twilio(accountSid, authToken);
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6. Define the message you want to send and the number where you want to send it:

index.tsx
const message = {
  from: 'whatsapp:<your-twilio-whatsapp-phone-number>',
  to: 'whatsapp:<recipient-phone-number>',
  body: 'Hello from Twilio!'
};
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7. Use the Twilio client to send the WhatsApp message:

index.tsx
client.messages.create(message)
  .then(message => console.log(message.sid))
  .catch(error => console.error(error));
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Note: You may need to enable Twilio's sandbox mode for WhatsApp before you can send messages to numbers that are not yet approved by WhatsApp.