Feature: Support Async Loading Extension?

[xianshenglu]

Problems:

When I'm trying to integrate this library I found the typescript is huge around 2.9mb.

And codemirror@6 doesn't support add extensions async.

Feature:

So, I'm wondering if we can support loading async or not.

Proposal:

For example,

tsFacet.of({ env, path }),

If the env is Promise<env> in that case, we can do nothing until env is loaded.

What do you think?

[tmcw]

I would consider this, though I think there are two pretty viable ways around it that are potentially better:

• If you use a worker, the TypeScript dependency can only live in the worker source code, which is loaded async and on a different thread. This is pretty ideal because it's both going to improve page responsiveness and also load times.
• You can load the modules async and reconfigure TypeScript when they load by using a compartment

[xianshenglu]

@tmcw Really thanks for the reminder. I found StateEffect.appendConfig from your link which can solve my use case like below

function injectExtension(view, extension) {
  view.dispatch({
    effects: StateEffect.appendConfig.of(extension)
  })
}

[xianshenglu]

For sure the worker version is a nicer way. I tried that in my angular project. It seems that there're some issues to make it work. More likely package issue.

If possible I'll try to raise the issues regarding worker in angular.