MessageHandlerEntry

A registered @MessageHandler, a message command or a listener for every message, as the registry lists it.

A message command is listed once, with its aliases, description, scope and usage, which is what a help command needs.

Marks a message handler, so kind narrows a HandlerEntry to this type.

The pattern, or undefined for a handler that takes every message.

The command words the pattern begins with, such as config set; undefined when it begins with a param.

The other command words the handler takes, from its aliases option.

What the command does, from its description option.

Where the command works: its scope option, narrowed to servers by a member, role or channel param or flag.

Whether its hidden option leaves it out of help's lists, including a parent's list of subcommands.

The command as a user types it, after prefix: usage('!') gives !ban <target> [duration] [reason…]. undefined for a handler that takes every message.

Whether words name this command or one of its aliases, as a help command's argument does: ban or b. Compared in any case unless the handler, or the app, is case-sensitive.