"TypeError: GridFsStorage不是构造函数“

Question

由于某些原因，我一直得到一个"TypeError: GridFsStorage不是构造函数“错误。我不知道为什么会出现这个错误，因为我只是在跟踪官方文档。

存储和上传

conn.once('open', ()=> {
    gfs = Grid(conn.db, mongoose.mongo)
    gfs.collection('uploads')
})

const storage = new GridFsStorage({
    url: DBURI,
    file: (req, file)=> {
        return new Promise((resolve,reject)=> {
            crypto.randomBytes(16, (err, buf)=> {
                if(err) {
                    return reject(err)
                }
                const filename = buf.toString('hex') + path.extname(file.originalname);
                const fileInfor = {
                    filename: filename,
                    bucketName: 'uploads'
                }
                resolve(fileInfo)
            })
        })
    }
})
const upload = multer({storage})

需求

const GridFsStorage = require('multer-gridfs-storage')

Bug

C:\Users\gabri\Desktop\GridFS\server.js:21
const storage = new GridFsStorage({
                ^

TypeError: GridFsStorage is not a constructor
    at Object.<anonymous> (C:\Users\gabri\Desktop\GridFS\server.js:21:17)      
    at Module._compile (node:internal/modules/cjs/loader:1092:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1121:10)
    at Module.load (node:internal/modules/cjs/loader:972:32)
    at Function.Module._load (node:internal/modules/cjs/loader:813:14)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
    at node:internal/main/run_main_module:17:47

Answer 1

国家预防机制文件显示如下：

const {GridFsStorage} = require('multer-gridfs-storage');

这与以下相同：

const GridFsStorage = require('multer-gridfs-storage').GridFsStorage;

然而，您使用的是完全不同的方法：

const GridFsStorage = require('multer-gridfs-storage');

Answer 2

用这个：

import {GridFsStorage} from 'multer-gridfs-storage'