Discord.js SlashCommandBuilder()：從異步列表中獲取選項選擇 function

Question

我正在嘗試創建一個帶有選項input的斜杠命令/test3 。 但是，我想從異步 function 中獲得這些選擇，但我嘗試這樣做的方式不起作用。

這是在tools.js中生成我的參數列表的簡化版本的代碼

module.exports = {
    getArgumentList: () => getArgumentList()
}

async function getArgumentList(){
    return [
        {name: '1', value:'One'},
        {name: '2', value:'Two'},
        {name: '3', value:'Three'},
        {name: '4', value:'Four'},
        {name: '5', value:'Five'}
    ]
}

以及命令的代碼，在test3.js中

const { SlashCommandBuilder } = require("discord.js");
const { getArgumentList } = require("../tools.js")

module.exports = {
    data: new SlashCommandBuilder()
            .setName('test3')
            .setDescription('Test command for commands with options.')
            .addStringOption(option =>
                getArgumentList()
                        .then(list => option.setName('input')
                                                .setDescription('The input to echo back.') 
                                                .setChoices(...list) )),           
    async execute(interaction){ 
        console.log('Testing')
    }
}

在這里我得到這個錯誤：

ExpectedValidationError: Expected
    at InstanceValidator.handle 
    ...
    at Module._load (node:internal/modules/cjs/loader:922:12) {
  validator: 's.instance(V)',
  given: Promise { <pending> },
  expected: [Function: SlashCommandStringOption]
}

Node.js v18.13.0

會有這樣做的好方法嗎？

Answer 1

.then .then() function 始終返回 promise，因此您不能將其設置為.addStringOption()的返回值。 使用 async/await 會讓這一切變得更清晰、更容易。

data: new SlashCommandBuilder()
            .setName('test3')
            .setDescription('Test command for commands with options.')
            .addStringOption(async option => {
               let list = await getArgumentList()
               return option.setName('input')
                   .setDescription('The input to echo back.')
                   .setChoices(...list)
            })

Answer 2

重構您的命令系統，使數據成為 function，並在您的斜杠命令部署腳本（或您之前使用數據屬性的任何地方）等待它，這樣您就可以將數據更改為：

module.exports = {
    data: async () => {
        // The list is fetched here (where we can use promises and async-await) before the SlashCommandBuilder gets made.
        const list = await getArgumentList();
        return new SlashCommandBuilder()
            .setName("test3")
            .setDescription("Test command for commands with options.")
            .addStringOption((option) =>
                option
                    .setName("input")
                    .setDescription("The input to echo back.")
                    .setChoices(...list)
            );
    };
}

示例斜杠命令部署腳本：

const commands = await Promise.all(
    client.commandRegistry.map((command) => (await command.data()).toJSON())
);

如果需要，您現在還可以將默認的 SlashCommandBuilder 傳遞給數據 function：

module.exports = {
    data: async (b) => {
        // The list is fetched here (where we can use promises and async-await) before the SlashCommandBuilder gets made.
        const list = await getArgumentList();
        // no .setName() required anymore! Deploy script set it for us.
        return b
            .setDescription("Test command for commands with options.")
            .addStringOption((option) =>
                option
                    .setName("input")
                    .setDescription("The input to echo back.")
                    .setChoices(...list)
            );
    };
}

const commands = await Promise.all(
    client.commandRegistry.map((command, key) =>
        (await command.data(new SlashCommandBuilder().setName(key))).toJSON()
    )
);