WhatsApp Business SDK (Worker Compatible)

Worker-compatible fork of whatsapp-business-sdk with zero Node.js dependencies

A TypeScript connector for WhatsApp Business APIs

Key Features

• ✅ Zero Node.js runtime dependencies - works anywhere JavaScript runs
• ✅ Worker environment compatible - Cloudflare Workers, Deno Deploy, etc.
• ✅ Web-standard APIs - Uses File, Blob, ArrayBuffer instead of filesystem
• ✅ Framework-agnostic webhooks - No Express dependency required
• ✅ Full TypeScript support - Comprehensive type definitions
• ✅ Comprehensive test coverage - Reliable and well-tested

Key Differences from Original

This fork modernizes the SDK for worker environments:

• Media Upload: Uses File/Blob instead of file paths
• Media Download: Returns ArrayBuffer instead of writing to filesystem
• Webhooks: Framework-agnostic helpers instead of Express-only client
• Dependencies: Replaced axios with ky, removed express and fs
• Testing: Migrated from Jest to Vitest for better ES module support

Installation

npm install @w7tf/whatsapp-business
# or
yarn add @w7tf/whatsapp-business
# or
pnpm add @w7tf/whatsapp-business

Zero Node.js dependencies - works in any JavaScript environment.

Environment Compatibility

This SDK works in any modern JavaScript environment:

• ✅ Node.js 18+ - Uses built-in File/Blob support
• ✅ Worker Environments - Cloudflare Workers, Deno Deploy, etc.
• ✅ Edge Functions - Vercel Edge, Netlify Edge, etc.
• ✅ Serverless - AWS Lambda, Google Cloud Functions, etc.

Documentation

Most methods accept JS objects. These can be populated using parameters specified by WhatsApp's API documentation or following the TypeScript schema.

Usage

Basic Usage

import { WABAClient, WABAErrorAPI } from "@w7tf/whatsapp-business";

// You can get these from the Meta for Developers app administration
const client = new WABAClient({
	accountId: "<YOUR_ACCOUNT_ID>",
	apiToken: "<YOUR_API_TOKEN>",
	phoneId: "<YOUR_BUSINESS_PHONE_ID>",
});

const foo = async () => {
	try {
		const res = await client.getBusinessPhoneNumbers();
		console.log(res);
	} catch (err) {
		const error: WABAErrorAPI = err;
		console.error(error.message);
	}
};

foo();

Sending Messages

You can send a text message:

const sendTextMessage = async (body: string, to: string) => {
	try {
		const res = await client.sendMessage({ to, type: "text", text: { body } });
		console.log(res);
	} catch (err) {
		const error: WABAErrorAPI = err;
		console.error(error.message);
	}
};

Or an image:

const sendPictureMessage = async ({ link, caption }: MediaObject, to: string) => {
	try {
		const res = await client.sendMessage({ to, type: "image", image: { link, caption } });
		console.log(res);
	} catch (err) {
		const error: WABAErrorAPI = err;
		console.error(error.message);
	}
};

sendPictureMessage(
	{ link: "<url_link_to_your_image>", caption: "<image_description>" },
	"<PHONE_NUMBER>"
);

Media Upload/Download

Upload Media (File/Blob)

// From Blob (any environment)
const blob = new Blob([data], { type: "image/jpeg" });
const response = await client.uploadMedia({ file: blob, type: "image" });

// From File constructor (worker environments)
const file = new File([arrayBuffer], "image.jpg", { type: "image/jpeg" });
const response = await client.uploadMedia({ file, type: "image" });

Download Media (ArrayBuffer)

const mediaUrl = "https://...";
const arrayBuffer = await client.downloadMedia(mediaUrl);

// Convert to Blob if needed
const blob = new Blob([arrayBuffer], { type: "image/jpeg" });

// In worker, return as Response
return new Response(arrayBuffer, {
  headers: { "Content-Type": "image/jpeg" }
});

Webhooks (Framework-Agnostic)

The webhook system is now framework-agnostic and works with any HTTP framework or environment.

Core Webhook Processing

import { webhookHandler } from "@w7tf/whatsapp-business";

// Process webhook payload directly
webhookHandler(webhookBody, {
	onMessageReceived: (message, contact, metadata) => {
		console.log("Message received:", message);
	},
	onTextMessageReceived: (textMessage, contact, metadata) => {
		console.log("Text message:", textMessage.text.body);
	},
	onStatusReceived: (status, metadata) => {
		console.log("Message status:", status.status);
	},
	onError: (error) => {
		console.error("Webhook error:", error);
	}
});

API Support

Cloud API
Business profiles endpoints
Media endpoints
Message endpoints
Phone Numbers endpoints
Registration endpoints
Two-Step-Verification endpoints

Webhooks
Cloud API
Business Management

License

MIT License - see LICENSE file.

Attribution

This is a fork of whatsapp-business-sdk by MarcosNicolau, modified for worker environment compatibility.

Contribution