Interface BaseArgumentType

• string does not cast to any type.
• lowercase makes the input lowercase.
• uppercase makes the input uppercase.
• charCodes transforms the input to an array of char codes.
• number casts to a number.
• integer casts to an integer.
• bigint casts to a big integer.
• url casts to an URL object.
• date casts to a Date object.
• color casts a hex code to an integer.
• commandAlias tries to resolve to a command from an alias.
• command matches the ID of a command.
• inhibitor matches the ID of an inhibitor.
• listener matches the ID of a listener.
• task matches the ID of a task.
• contextMenuCommand matches the ID of a context menu command.

Possible Discord-related types. These types can be plural (add an 's' to the end) and a collection of matching objects will be used.

• user tries to resolve to a user.
• member tries to resolve to a member.
• relevant tries to resolve to a relevant user, works in both guilds and DMs.
• channel tries to resolve to a channel.
• textChannel tries to resolve to a text channel.
• voiceChannel tries to resolve to a voice channel.
• categoryChannel tries to resolve to a category channel.
• announcementChannel tries to resolve to a announcement channel.
• stageChannel tries to resolve to a stage channel.
• threadChannel tries to resolve a thread channel.
• directoryChannel tries to resolve to a directory channel.
• role tries to resolve to a role.
• emoji tries to resolve to a custom emoji.
• guild tries to resolve to a guild.

Other Discord-related types:

• message tries to fetch a message from an ID within the channel.
• guildMessage tries to fetch a message from an ID within the guild.
• relevantMessage is a combination of the above, works in both guilds and DMs.
• invite tries to fetch an invite object from a link.
• userMention matches a mention of a user.
• memberMention matches a mention of a guild member.
• channelMention matches a mention of a channel.
• roleMention matches a mention of a role.
• emojiMention matches a mention of an emoji.