语法错误："fetch"的意外标识符

Question

我使用NodeJS制作了一个不和谐的机器人，每次启动机器人时都会显示以下错误：

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，我认为问题在于我正在使用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)
}
}
}

我知道这个代码非常混乱，因为它基本上是由我发现的不同代码组合而成的弗兰肯斯坦代码。因此，除了主要主题的解决方案外，我还将对另一个我没有注意到的问题表示赞赏。

NodeJS版本16.13.0，NPM版本8.1.0，DiscordJS 12.5.3版本，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
}