在discord.js中编辑画布附件

我正在尝试使用discord.js和Canvas创建各种游戏。我最近从本教程中学到了Canvas：/popular-topics/canvas.html。我遵循此示例的大部分内容来创建画布。

我想做的是能够编辑附件，或在setInterval（）中将其替换为新附件。我已经尝试过了，但似乎无法弄清楚如何编辑附件：

//attachid = The id for the canvas attachment; channel is the name of the channel the canvas was set in
bot.login(token).then(() => {
    setInterval(function() { //Start an interval after logging in...
        if(canvas !== null) { //If the canvas was created...
            //Edit canvas here
            var attachment = new Discord.Attachment(canvas.toBuffer) //Create a new canvas attachment
            //The fetchMessage below is where I am having issue
            channel.fetchMessage(attachid).then(msg => msg.edit(attachment));
        }
    }, 1000);
});

我已经知道如何使用画布本身，因为它类似于HTML5画布，但是不确定如何处理此发送的附件。如果没有[[absolutely无法编辑此附件，我将如何删除第一个附件（由attachid给出的附件）？

在discord.js中编辑画布附件

我正在尝试使用discord.js和Canvas创建各种游戏。我最近从本教程中学到了Canvas：/popular-topics/canvas.html。我遵循此示例的大部分内容来创建画布。

我想做的是能够编辑附件，或在setInterval（）中将其替换为新附件。我已经尝试过了，但似乎无法弄清楚如何编辑附件：

//attachid = The id for the canvas attachment; channel is the name of the channel the canvas was set in
bot.login(token).then(() => {
    setInterval(function() { //Start an interval after logging in...
        if(canvas !== null) { //If the canvas was created...
            //Edit canvas here
            var attachment = new Discord.Attachment(canvas.toBuffer) //Create a new canvas attachment
            //The fetchMessage below is where I am having issue
            channel.fetchMessage(attachid).then(msg => msg.edit(attachment));
        }
    }, 1000);
});

我已经知道如何使用画布本身，因为它类似于HTML5画布，但是不确定如何处理此发送的附件。如果没有[[absolutely无法编辑此附件，我将如何删除第一个附件（由attachid给出的附件）？