SyntaxError：“获取”的意外标识符

Question

我正在使用 NodeJS 制作一个不和谐的机器人，每次我启动机器人时它都会显示这个错误：

headers = (await fetch(filtered.fileUrl, { method: 'HEAD' })).headers
                 ^^^^^
SyntaxError: Unexpected identifier

我所知道的是，fetch 需要节点获取。起初，我认为问题在于我使用的是 node-fetch@3.0.0，它不支持 const fetch = require('node-fetch')，但即使我将其降级为 node-fetch@2.6.1，这个确切的问题仍然存在。

完整代码：

const fetch = require('node-fetch')
const Booru = require('booru')
const Discord = require('discord.js')
const { escapeMarkdown } = Discord.Util
const path = require('path')
const Color = `RANDOM`;
    module.exports = {
      info: {
        name: "booru",
        description: "booru image scraper",
        cooldown: 30,
      },
      async execute(client, message, args, Discord) {
        const tag_query = args.join(' ');

        if (!message.content.includes('help')) {
          if (!message.content.includes('something')) {
            const hornyEmbed = new Discord.MessageEmbed()
              .setTitle('embed cut to preserve space')
            if (!message.channel.nsfw) return message.channel.send(hornyEmbed)

            Booru.search('gelbooru', tag_query, {
                limit: 1,
                random: true
              })
              .then(posts => {
                const filtered = posts.blacklist(['blacklist, of course.'])
                if (filtered.length === 0) {
                  const notfoundEmbed = new Discord.MessageEmbed()
                    .setDescription("embed cut to preserve space")
                  message.channel.send(notfoundEmbed)
                }

                let tags =
                  filtered.tags.join(', ').length < 50 
                  ? Discord.Util.escapeMarkdown(filtered.tags.join(', ')) 
                  : Discord.Util.escapeMarkdown(filtered.tags.join(', ').substr(0, 50)) 
                  + `... [See All](https://giraffeduck.com/api/echo/?w=${Discord.Util
                                            .escapeMarkdown(filtered.tags.join(',').replace(/(%20)/g, '_'))
                                            .replace(/([()])/g, '\\$1')
                                            .substring(0, 1200)})`

                let headers
                let tooBig = false
                let imgError = false

                try {
                  headers = (await fetch(filtered.fileUrl, {
                    method: 'HEAD'
                  })).headers
                } catch (e) {
                  imgError = true
                }

                if (headers) {
                  tooBig = parseInt(headers.get('content-length'), 10) / 1000000 > 10
                }

                for (let post of posts) {

                  embed_nsfw = new Discord.MessageEmbed()
                    .setTitle('you horny')
                    .setColor('#FFC0CB')
                    .setAuthor('-')
                    .setDescription(`-` +
                      `**Provided by:** Gelbooru.com | `, +`[**Booru Page**](${filtered.postView}) | ` +
                      `**Rating:** ${filtered.rating.toUpperCase()} | ` +
                      `**File:** ${path.extname(filtered.file_url).toLowerCase()}, ${headers ? fileSizeSI(headers.get('content-length')) : '? kB'}\n` +
                      `**Tags:** ${tags}` +
                      (!['.jpg', '.jpeg', '.png', '.gif'].includes(
                          path.extname(filtered.fileURL).toLowerCase(),
                        ) ?
                        '`The file will probably not embed.`' :
                        '') +
                      (tooBig ? '\n`The image is over 10MB and will not embed.`' : '') +
                      (imgError ? '\n`I got an error while trying to get the image.`' : ''),
                    )
                    .setImage(filtered.sampleUrl)
                  message.channel.send(embed_nsfw);
                }
              })
          }
          if (message.content.includes('something')) {
            const helpEmbed = new Discord.MessageEmbed()
              .setTitle('cut to preserver space')
            message.channel.send(helpEmbed)
          }
        }
        if (message.content.includes('help')) {
          const helpEmbed = new Discord.MessageEmbed()
            .setTitle('cut to preserver space')
          message.channel.send(helpEmbed)
        }
      }
    }

我知道这段代码非常混乱，因为它基本上是由我找到的不同代码组合而成的科学怪人代码。因此，除了主要主题的解决方案之外，我还没有注意到另一个问题的指针也将不胜感激。

NodeJS 版本 16.13.0， NPM 版本 8.1.0， DiscordJS 版本 12.5.3， 在 Heroku 服务器上运行。

Answer 1

尝试将async 添加到.then(posts => 。

Booru.search('gelbooru', tag_query, {
...
  .then(async posts => {
    const filtered = posts.blacklist(['blacklist, of course.'])
    if (filtered.length === 0) {
      const notfoundEmbed = new Discord.MessageEmbed()
      .setDescription("embed cut to preserve space")
      message.channel.send(notfoundEmbed)
    }
...

  try {
    headers = (await fetch(filtered.fileUrl, {
      method: 'HEAD'
    })).headers
  }