Enable dart:html access on vm

[provokateurin]

I'm on Linux with dart 2.4.1 and with Flutter 1.8.5-pre.117 using dart 2.5.0-dev.1.0.

For flutter on web to work correctly (works but analyzer says it doesn't) access to dart:html has to be enable for vm. I also opened that issue in the flutter issue track, but nobody responded flutter/flutter#35588.
It also relates to #6424 but that issue has another context.

From the original issue:
To get it to work these lines should also be included in the vm section:
https://github.com/dart-lang/sdk/blob/master/sdk/lib/libraries.yaml#L181
Is that possible or would that break anything?

[a-siva]

Not sure I understand the comment 'dart:html has to be enabled for vm' as you are using flutter on web which does not involve the VM. I presume you want the analyzer to accept this without errors.

//cc @devoncarew for comments about analyzer accepting import of dart:html in flutter for web

[provokateurin]

Yeah exactly.
Also dart:svg would be good, but as far as I understood it uses dart:html right?

[devoncarew]

Currently I think you'll need to have a separate main.dart for web work; the Dart VM will not understand the dart:html import.

You'd want something like this: https://github.com/csells/flutter_mplat_ttt#the-trick, but with two separate entry-point files, one for flutter for web, which could use the dart:html library, and one for flutter for mobile.

[devoncarew]

@jld3103, looking into this a bit more, I think the work for this would happen in the flutter/engine repo. I'm going to close this issue and add a comment to your original flutter/flutter issue.

[provokateurin]

Currently flutter web gets unforked into the original repo and it's easily possible to import and work with dart:html.