Flutter Web - Error: Unsupported operation: _Namespace

[JojoGogo9]

I'm trying to use puppeteer for Server Side Rendering, but get this exception - I believe because puppeteer relies on dart.io

Is it possible to move from dart.io to universal_io to support flutter web? (I apologize in advance if this won't fix the issue)

Uncaught (in promise) Error: Unsupported operation: Namespace
at Object.throw [as throw] (errors.dart:236)
at Function.get _namespace [as _namespace] (io_patch.dart:200)
at Function.get systemTemp [as systemTemp] (directory_impl.dart:138)
at Function.get systemTemp [as systemTemp] (directory.dart:203)
at puppeteer.Puppeteer..launch (puppeteer.dart:136)
at launch.next ()
at runBody (async_patch.dart:84)
at Object._async [as async] (async_patch.dart:123)
at puppeteer.Puppeteer..launch (puppeteer.dart:95)
at getSiteMap (PuppeteerMethods.dart:9)
at getSiteMap.next ()
at runBody (async_patch.dart:84)
at Object._async [as async] (async_patch.dart:123)
at Object.getSiteMap (PuppeteerMethods.dart:6)
at main$ (main.dart:83)
at main$.next ()
at async_patch.dart:45
at _RootZone.runUnary (zone.dart:1613)
at _FutureListener.thenAwait.handleValue (future_impl.dart:155)
at handleValueCallback (future_impl.dart:707)
at Function._propagateToListeners (future_impl.dart:736)
at _Future.new.[_complete] (future_impl.dart:533)
at Object._cancelAndValue (stream_pipe.dart:61)
at stream.dart:1219
at _RootZone.runUnaryGuarded (zone.dart:1546)
at _BroadcastSubscription.new.[_sendData] (stream_impl.dart:341)
at _BroadcastSubscription.new.[_add] (stream_impl.dart:271)
at _SyncBroadcastStreamController.new.[_sendData] (broadcast_stream_controller.dart:378)
at _SyncBroadcastStreamController.new.add (broadcast_stream_controller.dart:244)
at auth.dart:307
at Object._checkAndCall (operations.dart:324)
at Object.dcall (operations.dart:329)
at ret (js_patch.dart:411)
at auth.js:1462

[xvrh]

Hi,
I think moving to universal_io is a good idea and can solve this problem. You won't be able to use the launch method in a browser (because it involves launching an OS process) but you will be able to use connect.

Alternatively, we could reorganise the methods and move launch to its own puppeteer_io.dart file (or create puppeteer_web.dart without it).