Implement a ShadowRealm API

[kitsunoff]

I implement a shadow realm API from stage 3 proposal
see https://github.com/tc39/proposal-shadowrealm

To add ShadowRealm you need to use AddShadowRealm extension method

[nilproject]

As i understand, Realms are not just "a module inside another module". It's looks like GlobalContext, created and managed by script

[kitsunoff]

As i understand, Realms are not just "a module inside another module". It's looks like GlobalContext, created and managed by script

maybe you can explain what i need change for correct work? Create a new GlobalContext and bind to module (because importValue require module resolvers for properly module resolving)?

[nilproject]

For the first iteration yes, create instance of GlobalContext for Module inside ShadowRealm.
I need to investigate this. It's not looks like easy to implement feature.
Also, spec of this feature is still changing. Maybe, we should to wait when it will be completed

[kitsunoff]

For the first iteration yes, create instance of GlobalContext for Module inside ShadowRealm.

I need to investigate this. It's not looks like easy to implement feature.

Also, spec of this feature is still changing. Maybe, we should to wait when it will be completed

Until this feature at Stage 3 - it can be usable by this extension method, i not add this to base library due to possible breaking changes.

[kitsunoff]

Hmm i try to create a new GlobalContext from Shadow Realm constructor and its throw exception

[kitsunoff]

I Fix this issue by some workarounds

[kitsunoff]

@nilproject please review