fix: undefined options

Author: nrigaudiere

packages/browser/src/fetch.ts

@@ -57,7 +57,7 @@ export const fetch = (url: string, options: LightpandaFetchOptions = defaultOpti
     try {
       const executablePath = getExecutablePath()
       const flags = [
-        { flag: `--dump ${dumpOptions.type ?? ''}`, condition: dump },
+        { flag: `--dump ${dumpOptions?.type ?? 'html'}`, condition: dump },
         { flag: '--insecure_disable_tls_host_verification', condition: disableHostVerification },
         { flag: '--obey_robots', condition: obeyRobots },
         { flag: `--http_proxy ${httpProxy}`, condition: httpProxy },