module Discorb
  #
  # Abstract class to make extension.
  # Include from this module to make your own extension.
  # @see file:docs/extension.md Extension
  # @abstract
  module Extension
    def initialize: (untyped client) -> void

    def events: -> untyped

    def self.included: (untyped base) -> untyped

    #
    # @private
    # Module for adding class methods to the extension class.
    module ClassMethods
      include Discorb::ApplicationCommand::Handler

      #
      # Define a new event.
      #
      # @param [Symbol] event_name The name of the event.
      # @param [Symbol] id The id of the event. Used to delete the event.
      # @param [Hash] metadata Other metadata.
      #
      # @return [Discorb::EventHandler] The event.
      def event:
        (
          :event_receive event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Symbol event_name, Discorb::json data) -> void
        } -> void
        | (
          :ready event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :standby event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :resumed event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :error event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Symbol event_name, Array[Object] args, Exception error) -> void
        } -> void
        | (
          :setup event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :shard_standby event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Shard shard) -> void
        } -> void
        | (
          :shard_resumed event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Shard shard) -> void
        } -> void
        | (
          :guild_join event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_available event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild before, Discorb::Guild after) -> void
        } -> void
        | (
          :guild_leave event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_destroy event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_integrations_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_ban_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild, Discorb::User user) -> void
        } -> void
        | (
          :guild_ban_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild, Discorb::User user) -> void
        } -> void
        | (
          :channel_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel channel) -> void
        } -> void
        | (
          :channel_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel before, Discorb::Channel after) -> void
        } -> void
        | (
          :channel_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel channel) -> void
        } -> void
        | (
          :webhooks_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::WebhooksUpdateEvent event) -> void
        } -> void
        | (
          :thread_new event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_join event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel before, Discorb::ThreadChannel after) -> void
        } -> void
        | (
          :thread_members_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ThreadChannel thread,
            Array[Discorb::ThreadChannel::Member] added,
            Array[Discorb::ThreadChannel::Member] removed
          ) -> void
        } -> void
        | (
          :thread_member_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ThreadChannel thread,
            Discorb::ThreadChannel::Member before,
            Discorb::ThreadChannel::Member after
          ) -> void
        } -> void
        | (
          :integration_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration integration) -> void
        } -> void
        | (
          :integration_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration after) -> void
        } -> void
        | (
          :integration_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration integration) -> void
        } -> void
        | (
          :message event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Message message) -> void
        } -> void
        | (
          :message_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::MessageUpdateEvent event) -> void
        } -> void
        | (
          :message_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::Message message,
            Discorb::Channel channel,
            Discorb::Guild guild
          ) -> void
        } -> void
        | (
          :message_delete_id event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::Snowflake message_id,
            Discorb::Channel channel,
            Discorb::Guild guild
          ) -> void
        } -> void
        | (
          :message_delete_bulk event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Array[Discorb::Message
            | Discorb::Gateway::UnknownDeleteBulkMessage] messages
          ) -> void
        } -> void
        | (
          :message_pin_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::MessagePinEvent event) -> void
        } -> void
        | (
          :typing_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::TypingStartEvent event) -> void
        } -> void
        | (
          :reaction_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionEvent event) -> void
        } -> void
        | (
          :reaction_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionEvent event) -> void
        } -> void
        | (
          :reaction_remove_all event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionRemoveAllEvent event) -> void
        } -> void
        | (
          :reaction_remove_emoji event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionRemoveEmojiEvent event) -> void
        } -> void
        | (
          :role_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :role_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role before, Discorb::Role after) -> void
        } -> void
        | (
          :role_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :member_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member member) -> void
        } -> void
        | (
          :member_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member before, Discorb::Member after) -> void
        } -> void
        | (
          :member_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member member) -> void
        } -> void
        | (
          :role_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :role_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role before, Discorb::Role after) -> void
        } -> void
        | (
          :role_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :invite_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Invite invite) -> void
        } -> void
        | (
          :invite_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Invite invite) -> void
        } -> void
        | (
          :interaction_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Interaction interaction) -> void
        } -> void
        | (
          :application_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction interaction) -> void
        } -> void
        | (
          :slash_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::ChatInputCommand interaction) -> void
        } -> void
        | (
          :message_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::MessageMenuCommand interaction) -> void
        } -> void
        | (
          :user_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::UserMenuCommand interaction) -> void
        } -> void
        | (
          :button_click event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::MessageComponentInteraction::Button interaction) -> void
        } -> void
        | (
          :select_menu_select event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::MessageComponentInteraction::SelectMenu interaction) -> void
        } -> void
        | (
          :form_submit event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ModalInteraction interaction) -> void
        } -> void
        | (
          :scheduled_event_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_cancel event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_edit event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ScheduledEvent before,
            Discorb::ScheduledEvent after
          ) -> void
        } -> void
        | (
          :scheduled_event_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :auto_moderation_rule_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_rule_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_rule_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_action_execution event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::AutoModerationActionExecutionEvent event) -> void
        } -> void
        | (
          :guild_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :thread_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :scheduled_event_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ScheduledEvent before,
            Discorb::ScheduledEvent after
          ) -> void
        } -> void
        | (
          :voice_channel_connect event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_disconnect event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_move event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_server_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_self_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_server_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_self_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_stream_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_stream_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_stream_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_video_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_video_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_video_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :stage_instance_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance `instance`) -> void
        } -> void
        | (
          :stage_instance_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance `instance`) -> void
        } -> void
        | (
          :stage_instance_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance before, Discorb::StageInstance after) -> void
        } -> void
        | (
          :voice_state_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          Symbol event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (*untyped) -> void
        } -> void

      #
      # Define a new once event.
      #
      # @param [Symbol] event_name The name of the event.
      # @param [Symbol] id The id of the event. Used to delete the event.
      # @param [Hash] metadata Other metadata.
      # @param [Proc] block The block to execute when the event is triggered.
      #
      # @return [Discorb::EventHandler] The event.
      def once_event:
        (
          :event_receive event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Symbol event_name, Discorb::json data) -> void
        } -> void
        | (
          :ready event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :standby event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :resumed event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :error event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Symbol event_name, Array[Object] args, Exception error) -> void
        } -> void
        | (
          :setup event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :shard_standby event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Shard shard) -> void
        } -> void
        | (
          :shard_resumed event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Shard shard) -> void
        } -> void
        | (
          :guild_join event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_available event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild before, Discorb::Guild after) -> void
        } -> void
        | (
          :guild_leave event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_destroy event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_integrations_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_ban_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild, Discorb::User user) -> void
        } -> void
        | (
          :guild_ban_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild, Discorb::User user) -> void
        } -> void
        | (
          :channel_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel channel) -> void
        } -> void
        | (
          :channel_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel before, Discorb::Channel after) -> void
        } -> void
        | (
          :channel_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Channel channel) -> void
        } -> void
        | (
          :webhooks_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::WebhooksUpdateEvent event) -> void
        } -> void
        | (
          :thread_new event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_join event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :thread_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel before, Discorb::ThreadChannel after) -> void
        } -> void
        | (
          :thread_members_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ThreadChannel thread,
            Array[Discorb::ThreadChannel::Member] added,
            Array[Discorb::ThreadChannel::Member] removed
          ) -> void
        } -> void
        | (
          :thread_member_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ThreadChannel thread,
            Discorb::ThreadChannel::Member before,
            Discorb::ThreadChannel::Member after
          ) -> void
        } -> void
        | (
          :integration_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration integration) -> void
        } -> void
        | (
          :integration_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration after) -> void
        } -> void
        | (
          :integration_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Integration integration) -> void
        } -> void
        | (
          :message event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Message message) -> void
        } -> void
        | (
          :message_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::MessageUpdateEvent event) -> void
        } -> void
        | (
          :message_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::Message message,
            Discorb::Channel channel,
            Discorb::Guild guild
          ) -> void
        } -> void
        | (
          :message_delete_id event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::Snowflake message_id,
            Discorb::Channel channel,
            Discorb::Guild guild
          ) -> void
        } -> void
        | (
          :message_delete_bulk event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Array[Discorb::Message
            | Discorb::Gateway::UnknownDeleteBulkMessage] messages
          ) -> void
        } -> void
        | (
          :message_pin_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::MessagePinEvent event) -> void
        } -> void
        | (
          :typing_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::TypingStartEvent event) -> void
        } -> void
        | (
          :reaction_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionEvent event) -> void
        } -> void
        | (
          :reaction_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionEvent event) -> void
        } -> void
        | (
          :reaction_remove_all event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionRemoveAllEvent event) -> void
        } -> void
        | (
          :reaction_remove_emoji event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::ReactionRemoveEmojiEvent event) -> void
        } -> void
        | (
          :role_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :role_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role before, Discorb::Role after) -> void
        } -> void
        | (
          :role_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :member_add event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member member) -> void
        } -> void
        | (
          :member_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member before, Discorb::Member after) -> void
        } -> void
        | (
          :member_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Member member) -> void
        } -> void
        | (
          :role_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :role_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role before, Discorb::Role after) -> void
        } -> void
        | (
          :role_remove event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Role role) -> void
        } -> void
        | (
          :invite_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Invite invite) -> void
        } -> void
        | (
          :invite_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Invite invite) -> void
        } -> void
        | (
          :interaction_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Interaction interaction) -> void
        } -> void
        | (
          :application_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction interaction) -> void
        } -> void
        | (
          :slash_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::ChatInputCommand interaction) -> void
        } -> void
        | (
          :message_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::MessageMenuCommand interaction) -> void
        } -> void
        | (
          :user_command event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::CommandInteraction::UserMenuCommand interaction) -> void
        } -> void
        | (
          :button_click event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::MessageComponentInteraction::Button interaction) -> void
        } -> void
        | (
          :select_menu_select event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::MessageComponentInteraction::SelectMenu interaction) -> void
        } -> void
        | (
          :form_submit event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ModalInteraction interaction) -> void
        } -> void
        | (
          :scheduled_event_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_cancel event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_edit event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ScheduledEvent before,
            Discorb::ScheduledEvent after
          ) -> void
        } -> void
        | (
          :scheduled_event_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :scheduled_event_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ScheduledEvent event) -> void
        } -> void
        | (
          :auto_moderation_rule_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_rule_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_rule_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::AutoModRule rule) -> void
        } -> void
        | (
          :auto_moderation_action_execution event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Gateway::AutoModerationActionExecutionEvent event) -> void
        } -> void
        | (
          :guild_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :guild_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::Guild guild) -> void
        } -> void
        | (
          :thread_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::ThreadChannel thread) -> void
        } -> void
        | (
          :scheduled_event_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (
            Discorb::ScheduledEvent before,
            Discorb::ScheduledEvent after
          ) -> void
        } -> void
        | (
          :voice_channel_connect event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_disconnect event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_move event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_channel_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          -> void
        } -> void
        | (
          :voice_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_server_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_self_mute_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_mute_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_mute_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_server_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_server_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_self_deaf_enable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_deaf_disable event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_self_deaf_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_stream_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_stream_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_stream_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :voice_video_start event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_video_end event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState state) -> void
        } -> void
        | (
          :voice_video_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          :stage_instance_create event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance `instance`) -> void
        } -> void
        | (
          :stage_instance_delete event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance `instance`) -> void
        } -> void
        | (
          :stage_instance_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::StageInstance before, Discorb::StageInstance after) -> void
        } -> void
        | (
          :voice_state_update event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (Discorb::VoiceState before, Discorb::VoiceState after) -> void
        } -> void
        | (
          Symbol event_name,
          ?id: Symbol?,
          **untyped metadata
        ) {
          (*untyped) -> void
        } -> void

      def self.extended: (untyped klass) -> untyped

      #
      # Add new top-level command.
      #
      # @param [String, Hash{Symbol => String}] command_name Command name.
      #  If hash is passed, it must be a pair of Language code and Command name, and `:default` key is required.
      #  You can use `_` instead of `-` in language code.
      # @param [String, Hash{Symbol => String}] description Command description.
      #   If hash is passed, it must be a pair of Language code and Command description, and `:default` key is required.
      #  You can use `_` instead of `-` in language code.
      # @param [Hash{String => Hash{:description => String, :optional => Boolean, :type => Object}}] options
      #  Command options.
      #   The key is the option name, the value is a hash with the following keys:
      #
      #   | Key | Type | Description |
      #   | --- | --- | --- |
      #   | `:name_localizations` | Hash{Symbol => String} | Localizations of option name. |
      #   | `:description` | `String` \| `Hash{Symbol => String}` |
      #     Description of the option. If hash is passed, it must be a pair of Language code and description,
      #     and `:default` key is required. You can use `_` instead of `-` in language code. |
      #   | `:required` | Boolean(true | false) |
      #     Whether the argument is required. `optional` will be used if not specified. |
      #   | `:optional` | Boolean(true | false) |
      #     Whether the argument is optional. `required` will be used if not specified. |
      #   | `:type` | `Object` | Type of the option. |
      #   | `:choices` | `Hash{String => String, Integer, Float}` | Type of the option. |
      #   | `:choices_localizations` | `Hash{String => Hash{Symbol => String}}` |
      #      Localization of the choice. Key must be the name of a choice. |
      #   | `:default` | `Object` | Default value of the option. |
      #   | `:channel_types` | `Array<Class<Discorb::Channel>>` | Type of the channel option. |
      #   | `:autocomplete` | `Proc` | Autocomplete function. |
      #   | `:range` | `Range` | Range of the option. Only valid for numeric options. (`:int`, `:float`) |
      #
      # @param [Array<#to_s>, false, nil] guild_ids
      #  Guild IDs to set the command to. `false` to global command, `nil` to use default.
      # @param [Boolean] dm_permission Whether the command is available in DM.
      # @param [Discorb::Permission] default_permission The default permission of the command.
      # @param [Proc] block Command block.
      #
      # @return [Discorb::ApplicationCommand::Command::ChatInputCommand] Command object.
      #
      # @see file:docs/application_command.md#register-slash-command Application Comamnds: Register Slash Command
      # @see file:docs/cli/setup.md CLI: setup
      def slash: (
        String | ::Hash[Symbol, String] command_name,
        String | ::Hash[Symbol, String] description,
        ?::Hash[String, String | Integer | Float] options,
        ?guild_ids: (::Array[untyped] | bool)?,
        ?dm_permission: bool,
        ?default_permission: Discorb::Permission?
      ) -> Discorb::ApplicationCommand::Command::ChatInputCommand

      #
      # Add new command with group.
      #
      # @param [String, Hash{Symbol => String}] command_name Command name.
      # @param [String, Hash{Symbol => String}] description Command description.
      # @param [Array<#to_s>, false, nil] guild_ids
      #  Guild IDs to set the command to. `false` to global command, `nil` to use default.
      # @param [Boolean] dm_permission Whether the command is available in DM.
      # @param [Discorb::Permission] default_permission The default permission of the command.
      #
      # @yield Block to yield with the command.
      # @yieldparam [Discorb::ApplicationCommand::Command::GroupCommand] group Group command.
      #
      # @return [Discorb::ApplicationCommand::Command::GroupCommand] Command object.
      #
      # @see file:docs/application_command.md Application Commands
      # @see file:docs/cli/setup.md CLI: setup
      def slash_group: (
        String | ::Hash[Symbol, String] command_name,
        String | ::Hash[Symbol, String] description,
        ?guild_ids: (::Array[untyped] | bool)?,
        ?dm_permission: bool,
        ?default_permission: Discorb::Permission?
      ) ?{
        (Discorb::ApplicationCommand::Command::GroupCommand group) -> void
      } -> Discorb::ApplicationCommand::Command::GroupCommand

      #
      # Add message context menu command.
      #
      # @param [String, Hash{Symbol => String}] command_name Command name.
      # @param [Array<#to_s>, false, nil] guild_ids
      #  Guild IDs to set the command to. `false` to global command, `nil` to use default.
      # @param [Boolean] dm_permission Whether the command is available in DM.
      # @param [Discorb::Permission] default_permission The default permission of the command.
      # @param [Proc] block Command block.
      # @yield [interaction, message] Block to execute.
      # @yieldparam [Discorb::CommandInteraction::UserMenuCommand] interaction Interaction object.
      # @yieldparam [Discorb::Message] message Message object.
      #
      # @return [Discorb::ApplicationCommand::Command] Command object.
      def message_command: (
        String | ::Hash[Symbol, String] command_name,
        ?guild_ids: (::Array[untyped] | bool)?,
        ?dm_permission: bool,
        ?default_permission: Discorb::Permission?
      ) ?{
        (
          Discorb::CommandInteraction::UserMenuCommand interaction,
          Discorb::Message message
        ) -> void
      } -> Discorb::ApplicationCommand::Command

      #
      # Add user context menu command.
      #
      # @param [String, Hash{Symbol => String}] command_name Command name.
      # @param [Array<#to_s>, false, nil] guild_ids
      #  Guild IDs to set the command to. `false` to global command, `nil` to use default.
      # @param [Boolean] dm_permission Whether the command is available in DM.
      # @param [Discorb::Permission] default_permission The default permission of the command.
      # @param [Proc] block Command block.
      # @yield [interaction, user] Block to execute.
      # @yieldparam [Discorb::CommandInteraction::UserMenuCommand] interaction Interaction object.
      # @yieldparam [Discorb::User] user User object.
      #
      # @return [Discorb::ApplicationCommand::Command] Command object.
      def user_command: (
        String | ::Hash[Symbol, String] command_name,
        ?guild_ids: (::Array[untyped] | bool)?,
        ?dm_permission: bool,
        ?default_permission: Discorb::Permission?
      ) ?{
        (
          Discorb::CommandInteraction::UserMenuCommand interaction,
          Discorb::User user
        ) -> void
      } -> Discorb::ApplicationCommand::Command

      #
      # Setup commands.
      # @async
      # @see Client#initialize
      #
      # @param [String] token Bot token.
      # @param [Array<#to_s>, false, nil] guild_ids
      #  Guild IDs to use as default. If `false` is given, it will be global command.
      #
      # @note `token` parameter only required if you don't run client.
      def setup_commands: (
        ?String? token,
        ?guild_ids: (::Array[untyped] | bool)?
      ) -> untyped

      #
      # Claer commands in specified guilds.
      # @async
      # @see Client#initialize
      #
      # @param [String] token Bot token.
      # @param [Array<#to_s>, false, nil] guild_ids Guild IDs to clear.
      #
      # @note `token` parameter only required if you don't run client.
      def clear_commands: (
        String token,
        (::Array[untyped] | bool)? guild_ids
      ) -> untyped

      # @return [Hash{Symbol => Array<Discorb::EventHandler>}] The events of the extension.
      attr_reader events: ::Hash[Symbol, [Symbol?, Hash[untyped, untyped], ^(
        *untyped
      ) -> void]]

      # @return [Array<Discorb::ApplicationCommand::Command>] The commands of the extension.
      attr_reader commands: ::Array[Discorb::ApplicationCommand::Command]

      # @private
      attr_reader callable_commands: untyped
    end
  end
end