pub type OutputHook = fn(bytes: &[u8]) -> Result<()>;Expand description
Function-pointer signature for writing bytes to a host-provided output
stream, installed on GlobalState::stdout_hook or
GlobalState::stderr_hook by the embedder.
Bare wasm32-unknown-unknown has no ambient stdout/stderr. Keeping output
behind explicit hooks lets sandboxed and WASM hosts decide whether output is
unavailable, buffered, or bridged to something like a browser console.