refactor: Rename sign.ts to hmac.ts and update function name to createHmacSignature

Author: anarkrypto

src/utils/sign.ts renamed to src/utils/hmac.ts

@@ -2,7 +2,7 @@
  * Use Web Crypto API to create HMAC-SHA256 signature
  * Returns the signature as a hex string
  */
-export const sign = async (data: string, secret: string) => {
+export const createHmacSignature = async (data: string, secret: string) => {
 	const algorithm = { name: 'HMAC', hash: 'SHA-256' };
 
 	const enc = new TextEncoder();

src/workers/webhook-delivery.ts

@@ -2,7 +2,7 @@ import { v4 as uuid } from 'uuid';
 import { WEBHOOK_RETRY, WEBHOOK_DELIVERY_TIMEOUT } from '../constants';
 import { MessageBody } from '../types';
 import { fetchWithTimeout, getHeaders } from '../utils';
-import { sign } from '../utils/sign';
+import { createHmacSignature } from '../utils/hmac';
 import { logger } from '../logger';
 
 export const webhookDelivery = async (message: MessageBody, env: Env) => {
@@ -39,7 +39,7 @@ export const webhookDelivery = async (message: MessageBody, env: Env) => {
 		};
 
 		if (webhook.secret) {
-			const signature = await sign(JSON.stringify(requestBody), webhook.secret);
+			const signature = await createHmacSignature(JSON.stringify(requestBody), webhook.secret);
 			requestHeaders['X-Signature'] = signature;
 		}