Description

#[derive(ScryptoSbor, ScryptoEvent)]
pub struct InstantiationEvent {
    pub local_domain: u32,
}

In mailbox.rs, an InstantiationEvent is defined to be emitted when the Mailbox component is instantiated. However, in the current version of the code, this event is not emitted within the instantiate function.

Impact

Leaving unused events in the codebase reduces maintainability and may potentially lead to confusion for off-chain systems that expect the event.

Recommendations

Either remove the InstantiationEvent, or ensure that it is emitted within the instantiate function.

Remediation

This issue has been acknowledged by Hyperlane, and a fix was implemented in commit 4f989776↗.