chore: refactor @packages/https-proxy to TypeScript and use vitest instead of mocha (#32718)

* chore: convert @packages/https-proxy to TypeScript and use vitest instead of mocha

* chore: address comments from code review

* Update packages/https-proxy/vitest.config.ts

packages/https-proxy/lib/util/parse.ts

@@ -0,0 +1,47 @@
+import { parse } from 'url'
+
+export function parseHost (hostString: string, defaultPort: number) {
+  let m
+
+  m = hostString.match(/^http:\/\/(.*)/)
+
+  if (m) {
+    const parsedUrl = parse(hostString)
+
+    return {
+      host: parsedUrl.hostname,
+      port: parsedUrl.port,
+    }
+  }
+
+  const hostPort = hostString.split(':')
+  const host = hostPort[0]
+  const port = hostPort.length === 2 ? +hostPort[1] : defaultPort
+
+  return {
+    host,
+    port,
+  }
+}
+
+export function hostAndPort (reqUrl: string, headers: any, defaultPort: number) {
+  let m
+  const {
+    host,
+  } = headers
+
+  const hostPort = parseHost(host, defaultPort)
+
+  // this handles paths which include the full url. This could happen if it's a proxy
+  m = reqUrl.match(/^http:\/\/([^\/]*)\/?(.*)$/)
+
+  if (m) {
+    const parsedUrl = parse(reqUrl)
+
+    hostPort.host = parsedUrl.hostname
+    hostPort.port = parsedUrl.port
+    reqUrl = parsedUrl.path
+  }
+
+  return hostPort
+}