feat: replace undici.Pool with undici.request

lib/webhook.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const fp = require('fastify-plugin')
-const { Pool } = require('undici')
+const { request } = require('undici')
 const createError = require('@fastify/error')
 
 const notAllowed = new Set([
@@ -11,15 +11,8 @@ const notAllowed = new Set([
 ])
 
 module.exports = fp(async function (app, pluginOpts) {
-  const {
-    webhook: opts
-  } = pluginOpts
+  const url = pluginOpts.webhook.url
 
-  const origin = new URL(opts.url)
-  const path = origin.pathname
-  origin.pathname = '/'
-  const pool = new Pool(origin)
-  app.addHook('onClose', () => pool.close())
   app.decorateRequest('createWebhookSession', async function () {
     const headers = {}
     for (const header of Object.keys(this.headers)) {
@@ -31,8 +24,7 @@ module.exports = fp(async function (app, pluginOpts) {
     if (body) {
       headers['content-length'] = Buffer.byteLength(body)
     }
-    const res = await pool.request({
-      path,
+    const res = await request(url, {
       method: 'POST',
       headers: {
         ...headers,