multer 2.0.0 buffer is undefined

Due to a security vulnerability, I have to upgrade to 2.0.0+ but now req.file.buffer is undefined. memoryStorage() is no longer a function, so can you help me figure out how to get the buffer object for my file?

const multer = require('multer');
const storage = multer.memoryStorage() // memoryStorage() is not a function
const upload = multer({ storage: storage })

router.post('/', upload.single('file'), function (req, res, next) {
    console.log('file:', req.file) // ok
    console.log('path:', req.file.path) // ok
    console.log('buffer:', req.file.buffer) // undefined when I don't use memoryStorage
}

[LinusU]

Due to a security vulnerability, I have to upgrade to 2.0.0+

Could you elaborate, would love to fix this in 1.x

memoryStorage() is no longer a function

That’s correct, we’ve moved to using streams instead of having specific storage engines. To read it into memory, use e.g. get-stream:

const multer = require('multer')
const getStream = require('get-stream')

const upload = multer()

router.post('/', upload.single('file'), async function (req, res, next) {
    console.log('file:', req.file) // ok
    const buffer = await getStream(req.file.stream)
}

[LinusU]

@RegularDan can’t you send the stream directly to imgur, instead of using getStream to turn it into a buffer? Something like got.post('https://imgur.com/api/upload', { body: req.file.stream })?

Anyhow, since the original question have been answered I will close this…