fix(wasm): support ws

[ethernomad]

Motivation

When attempting to make a browser dapp with Dioxus I found that Alloy would not build with WebSocket support:

error[E0599]: no function or associated item named `new` found for struct `WsConnect` in the current scope
  --> /home/jbrown/alloy/crates/rpc-client/src/builtin.rs:84:64
   |
84 |             Self::Ws(url, _) => alloy_transport_ws::WsConnect::new(url.clone())
   |                                                                ^^^ function or associated item not found in `WsConnect`

It is critical that Alloy supports building browser dapps with WebSocket support.

Solution

All that is required to fix this is adding missing function new() to WsConnect in crates/transport-ws/src/wasm.rs.

With this fix I verified that Alloy could connect to a local node from the browser via WS.

Additionally I updated scripts/check_no_std.sh to check affected crates and ws feature. The target was changed from riscv32imac-unknown-none-elf to wasm32-unknown-unknown to facilitate this.

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes

[mattsse]

this seems okay

[DaniPopes]

Thanks!