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Discolink

Module augmentation

For consumers

Section titled “For consumers”

Four interfaces can be augmented. Declare them once in a .d.ts file and the types appear everywhere — no casting, zero runtime cost.

InterfaceWhat it typesWhere it appears
QueueContextData you attach to a queuequeue.context, CreateQueueOptions, PlayOptions
CommonUserDataData you attach to a tracktrack.userData, PlayOptions, queue.add()
CommonPluginInfoPlugin-provided track/playlist metadatatrack.pluginInfo, playlist.pluginInfo
CommonPluginFiltersPlugin-provided audio filtersqueue.filters, all FilterManager methods

All augmented interfaces extend JsonObject — values must be JSON-serializable. Augmentations are compile-time only with no runtime cost.

// augment.d.ts — include this file in your tsconfig
declare module "discolink" {
  interface QueueContext {
    textChannelId: string;
    requestedBy: string;
  }


  interface CommonUserData {
    userId: string;
    username: string;
  }


  interface CommonPluginFilters {
    customEcho: { delay: number; decay: number };
  }
}

The types flow through without any extra work:

const queue = await player.queues.create({
  guildId,
  voiceId,
  context: { textChannelId: "123", requestedBy: "user1" }, // ✓ typed
});


queue.context.textChannelId; // ✓ string


queue.add(track, { userId: "abc", username: "Alice" }); // ✓ typed


await queue.filters.set("customEcho", { delay: 200, decay: 0.5 }); // ✓ typed


player.on("trackStart", (queue, track) => {
  console.log(track.userData.username); // ✓ string
  console.log(queue.context.textChannelId); // ✓ string
});

For package authors

Section titled “For package authors”

If you’re publishing a plugin package, distribute a .d.ts file alongside it that augments whichever interfaces your plugin touches.

// shared.d.ts — shipped with your package
declare module "discolink" {
  interface CommonPluginFilters {
    myFilter: { intensity: number };
  }


  interface CommonPluginInfo {
    myField: string;
  }
}