User Agent string in fetch requests

src/WAConnection/Utils.ts

@@ -3,6 +3,7 @@ import HKDF from 'futoin-hkdf'
 import Decoder from '../Binary/Decoder'
 import {platform, release} from 'os'
 import { BaileysError } from './Constants'
+import UserAgent from 'user-agents'
 
 const platformMap = {
     'aix': 'AIX',
@@ -17,6 +18,10 @@ export const Browsers = {
     /** The appropriate browser based on your OS & release */
     appropriate: browser => [ platformMap [platform()] || 'Ubuntu', browser, release() ] as [string, string, string]
 }
+export function userAgentString (browser) {
+    const agent = new UserAgent (new RegExp(browser))
+    return agent.toString ()
+}
 /** decrypt AES 256 CBC; where the IV is prefixed to the buffer */
 export function aesDecrypt(buffer: Buffer, key: Buffer) {
     return aesDecryptWithIV(buffer.slice(16, buffer.length), key, buffer.slice(0, 16))