Problem with typescript interfaces

[atomic bridge]

export interface MusicOptions {
  requiresVc: boolean;
  requiresPlaying: boolean;
  requiresDjRole: boolean;
}

interface Args {
  interaction: ChatInputCommandInteraction
  client: ExtClient
  player: ExtPlayer
}

type Command = {
  data: Omit<SlashCommandBuilder, 'addSubcommandGroup' | 'addSubcommand'> | SlashCommandSubcommandsOnlyBuilder;
  musicCommand?: MusicOptions
  callback: (_: Args) => any
} | {
  data: Omit<SlashCommandBuilder, 'addSubcommandGroup' | 'addSubcommand'> | SlashCommandSubcommandsOnlyBuilder;
  musicCommand?: undefined,
  callback: (_: Omit<Args, 'player'>) => any
}```

For some reason when I add the `Omit<Args, 'player'>` part to the 2nd part of the union type it turns all other arguments including player into any for the first part of the union (the one where musicCommand is MusicOptions)

[bright pelican]

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[raw ginkgo]

Well, why is musicCommand optional in the first union member? In that case both union members would apply if there‘s no musicCommand in it and thus both callback types would apply to the function

[atomic bridge]

oh I must've forgotten to remove the optional thing from it

lemme try

yeah that's not it

I removed the optional operator from both unions and that didn't change anything unfortunately

[raw ginkgo]

How do you make sure you access the first union member and not the second? As in where do you have the issue with those being any?