用新的自定义属性扩展库类属性

Question

在我的第3方库中，我希望能够使用我自己的属性对其进行扩展并使用安全性。但是我似乎无法将这种类型扩展为包括我的自定义变量。希望当您看到示例时更有意义。

import * as discord from "discord.js";
import Settings from '../models/settings.model';

export default class Guild extends discord.Guild {
    constructor(client: discord.Client, guilds: any, msg: discord.Message, settings: Settings) {
        super(client, msg); //discord.Guild requires these in its constructor

        //These are the values that I want to be a part of discord.Guild
        guilds[msg.guild.id] = {
            queue: [],
            queueNames: [{}],
            songDuration: null,
            isPlaying: false,
            dispatcher: null,
            voiceChannel: null,
            skipRequest: 0,
            skipList: [],
            botChannel: settings.bot_channel || null,
            botRole: settings.bot_role || null,
            adminRole: settings.bot_role || null,
            prefix: settings.prefix || null,
            oldPrefix: null
        };
    }
}

然后我希望能够像这样使用它：

customFunction(guild: discord.Guild, name: string){
    guild.queue = [];
    guild.songDuration = 23;
    guild.isPlaying = true;
    guild.dispatcher: null;
    guild.DefaultPropertyWhichIsPartOfLibrary = someValue;
}

但是现在，guild.queue是discord.Guild的未知属性。我如何扩展此类型，使其知道它是discord.Guild的一部分？