Users vs. GuildMembers in Discord.js: When Do I Need Which?

Understanding the Distinction Between Users and GuildMembers in Discord.js

Mistakes often arise due to confusion between Users and GuildMembers within discord.js. To clarify, Users represent global Discord users across all servers, while GuildMembers represent specific Discord users within a particular server.

GuildMember-Exclusive Functions and Properties

GuildMembers have exclusive access to server-specific information, including:

• Permissions
• Roles
• Nicknames
• Dates joined, etc.

Attempting to access these guild-bound functions or properties on Users will result in errors.

Common Errors and Workarounds

Some common errors occur when calling guild-specific functions on Users:

user.kick() is not a function
user.ban() is not a function

To resolve these issues:

• Use message.mentions.members.first() instead of message.mentions.users.first().
• Use Guild.member() to convert Users to GuildMembers as needed.

Beware of User Parameters in Events

Specific events pass Users as parameters, not GuildMembers:

• messageReactionAdd()
• guildBanAdd()
• typingStart()

User-Exclusive Properties and Methods

While GuildMembers have unique features, Users also have exclusive properties and methods:

• user.tag represents the user's Discord username and discriminator.

Converting GuildMembers to Users

Converting GuildMembers to Users is straightforward using GuildMember.user. Despite lacking a GuildMember.tag property, GuildMember.user.tag provides the equivalent information.

Conclusion

Understanding the distinction between Users and GuildMembers is crucial to avoid errors and effectively manage user information in discord.js. By differentiating these two types and leveraging the appropriate conversion methods and event parameters, you can avoid common pitfalls and ensure correct program behavior.

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