dart:html WorkerGlobalScope missing property console


Using dart_2.0.0-dev.60.0-1_amd64.deb on Ubuntu 18.04 LTS

Trying to use the class WorkerGlobalScope to get to the console in code meant to executed in  a web worker, 
```
void main(List<String> args) {
  WorkerGlobalScope.console.log("Enter worker console");
  ...
}
```
but the dev compiler gives:
`[error] The getter 'console' isn't defined for the class 'WorkerGlobalScope'.`