Workers Assets Binding

[BrandonDyer64]

closes #644

I went down a rabbit hole creating an entire new Assets env binding just to find out it's a Fetcher. In fact, you could probably use assets by just calling env.get_binding::<Fetcher>("ASSETS") without this PR.

TODO: Testing

[BrandonDyer64]

Maybe this isn't enough. I'm doing some testing and setting the following in my wrangler.toml will serve the assets, but not expose the binding:

[assets]
binding = "ASSETS"
directory = "./public/"

I get something along the lines of

Your worker has access to the following bindings:
- D1 Databases:
  - DB: anaso (00000000-0000-0000-0000-000000000000)
- Vars:
  - ANASO_JWT_SECRET: "################"

Nothing related to assets.

I'm on wrangler 3.81.0, worker-build 0.1.0, and compatibility_date = "2024-09-19".

[kflansburg]

Sorry that you went in circles on this. I think this looks correct. Have you tried deploying your worker and testing that? I will see if I can reproduce the issue in local development.

[kflansburg]

This worked locally for me. You do need to specify a dummy URL (I think all Fetchers behave this way).