feat(node, deno, bun): validate server port range (#137)

Author: iiio2

src/_utils.ts

@@ -8,6 +8,10 @@ export function resolvePortAndHost(opts: ServerOptions): {
 } {
   const _port = opts.port ?? globalThis.process?.env.PORT ?? 3000;
   const port = typeof _port === "number" ? _port : Number.parseInt(_port, 10);
+  if (port < 0 || port > 65_535) {
+    throw new RangeError(`Port must be between 0 and 65535 (got "${port}").`);
+  }
+
   const hostname = opts.hostname ?? globalThis.process?.env.HOST;
   return { port, hostname };
 }