Type Alias BoxFuture 

pub type BoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + 'a>>;

A heap-allocated, type-erased future.

Intentionally non-Send on all targets. This keeps the library usable on single-threaded runtimes (ICP, WASM) without pulling in extra constraints. If you need a Send future on native, wrap at the call site.

Aliased Type

#[repr(transparent)]
pub struct BoxFuture<'a, T> { /* private fields */ }