Generic types for SlashCommand Options

[joaisa17]

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Which package is the feature request for?

discord.js

Feature

I'm obsessed with autocomplete, and would like to pass an interface into any of the SlashCommand Option classes, to provide autocomplete when adding e.g choices:

Suggested usage:

import { SlashCommandBuilder, SlashCommandStringOption, SlashCommandIntegerOption } from 'discord.js';

interface Options {
    somestring: string;
    somestringchoice: 'foo'|'bar';

    somenumber: number;
}

new SlashCommandBuilder()
    .setName('example')
    .setDescription('Example command')

    .addStringOption(
        new SlashCommandStringOption<Options>()
            .setName('somestring') // Provide autocomplete for keyof Options (filter string types)
            .setDescription('Any string')
    )

    .addStringOption(
        new SlashCommandStringOption<Options>()
            .setName('somestringchoice') // Provide autocomplete for keyof Options (filter literal string types if possible)
            .setDescription('String choice')
            .setChoices(
                { name: 'foo', value: 'foo' }, // Provide autocomplete for Options[name]
                { name: 'bar', value: 'bar' }
            )
    )

    .addIntegerOption(
        new SlashCommandIntegerOption<Options>()
            .setName('somenumber') // Provide autocomplete for keyof Options (filter number types)
            .setDescription('Number choice')
    )

Ideal solution or implementation

Add an optional generic to each of the Option classes

Alternative solutions or implementations

No response

Other context

Adding a generic to the SlashCommandBuilder class itself would probably mean that you will have to rewrite the entire usage of the SlashCommandBuilder, as I do not believe a passed class can use generics from another, e.g you pass the Options to the Builder itself, in which case the StringOption class won't resolve the options.

[cobaltt7]

Duplicate of #8218

[imranbarbhuiya]

This isn't a duplicate of #8218 as that issue is for getting type in received values, not in the builder methods. And I don't see why you want a autocomplete in builders. Both interface and builders are defined by you so why you want to duplicate your codes with a interface as well as builder