Deno Deploy
Deno is a new open source rust-based typescript v8 javascript engine.
Deno recently launched their Deno Deploy product, which is a full fledged edge compute platform completely built for the Deno/javascript/typescript landscape.
Deno offers a nice local worker environment which full support for Worker Environments.
The Deno library size is not that big at the time of writing, but with the underlying tech, this should only be a matter of time.