@Once

It's exactly the same behavior as @On but the method is only executed once

@Discord()
class Example {
  @Once({ event: Events.MessageDelete })
  onMessageDelete() {
    // ...
  }
}

Signature

Once(options?: EventOptions)

Get the event payload

For each event a list of arguments is injected in your decorated method, you can type this list thanks to the ArgsOf<"YOUR_EVENT"> type provided by discord.ts.

You also receive other useful arguments after that:

1. The event payload (ArgsOf<"YOUR_EVENT">)
2. The Client instance
3. The guards payload

You should use JS destructuring for ArgsOf<"YOUR_EVENT"> like in this example

@Discord()
class Example {
  @Once({ event: Events.MessageCreate })
  onMessage(
    [message]: ArgsOf<Events.MessageCreate>, // Type message automatically
    client: Client, // Client instance injected here,
    guardPayload: any,
  ) {
    // ...
  }
}

Rest

To handle rest events

@Discord()
class Example {
  @Once.rest()
  rateLimited([data]: RestArgsOf<"rateLimited">): void {
    console.log(data.limit);
  }
}