running just build results in compile error in cashu-sdk-js

[ngutech21]

steps to reproduce:

git clone https://github.com/thesimplekid/cashu-crab.git
just build
-> compile error:

error[E0277]: `std::result::Result<Melted, cashu_sdk::wallet::Error>` is not a future
   --> bindings/cashu-sdk-js/src/wallet.rs:154:14
    |
154 |             .await
    |             -^^^^^
    |             ||
    |             |`std::result::Result<Melted, cashu_sdk::wallet::Error>` is not a future
    |             help: remove the `.await`
    |
    = help: the trait `Future` is not implemented for `std::result::Result<Melted, cashu_sdk::wallet::Error>`
    = note: std::result::Result<Melted, cashu_sdk::wallet::Error> must be a future or must implement `IntoFuture` to be awaited
    = note: required for `std::result::Result<Melted, cashu_sdk::wallet::Error>` to implement `IntoFuture`

warning: call to `.deref()` on a reference in this situation does nothing

error[E0308]: mismatched types
  --> bindings/cashu-sdk-js/src/wallet.rs:39:32
   |
39 |             inner: Wallet::new(client.deref().clone(), mint_keys.deref().clone()),
   |                    ----------- ^^^^^^^^^^^^^^^^^^^^^^ expected `Client`, found a different `Client`
   |                    |
   |                    arguments to this function are incorrect
   |
note: associated function defined here

expected result

cloning the repo and running just build without any feature flags compiles the workspace

JsClient.deref() returns a non-blocking client, which seems to be correct. But Wallet::new() expects a blocking client. I don't understand why this happens since blocking is an optional feature, that is not enabled by default.