Means of distinguishing different ContextMenuCommandBuilder types

[GrantGryczan]

Which package is the feature request for?

builders

Feature

I'm trying to develop a TypeScript library that adds more abstractions around common Discord.js patterns and boilerplates, but I've run into a problem when trying to do this for context menu commands, because TypeScript has access to no information about what type of context menu a ContextMenuCommandBuilder represents. This is despite that it has a setType method, which I believe should narrow the type to provide that information. I need my types to be able to know whether the resulting interaction will be a UserContextMenuInteraction or a MessageContextMenuInteraction based on what type of ContextMenuCommandBuilder it is. Without any such type information on ContextMenuCommandBuilders, this is impossible.

Ideal solution or implementation

I suggest that the ContextMenuCommandBuilder's setType method return a narrower builder type to specify which type the builder is. I don't care how it's done, as long as it is convenient to distinguish using TypeScript.

One example could be that .setType(type: T) returns ContextMenuCommandBuilder & {type: T}, where T extends ContextMenuCommandType. Another could be that it returns a ContextMenuCommandBuilder<T>, and T would be used as the value of the type property to begin with, extending and defaulting to ContextMenuCommandType.

Alternative solutions or implementations

No response

Other context

No response

[didinele]

Resolved with #10448 (merged soon)