Typescript: Property 'file' does not exist on type 'Request'

Because the file/s or body attributes (and all the rest) is added in runtime, the Typescript compiler does not recognize them and it fails. So, they should be referenced like this

app.post('/profile', upload.single('avatar'), function (req, res, next) {
  // req['file'] is the `avatar` file
  // req['body'] will hold the text fields, if there were any
})

app.post('/photos/upload', upload.array('photos', 12), function (req, res, next) {
  // req['files'] is array of `photos` files
  // req['body'] will contain the text fields, if there were any
})

Just wanted to point that out. Maybe you can add a comment in the documentation. Thanks!

[blakeembrey]

I haven’t been writing them, but I could. I just have a simple local definition for myself that looks like this:

export interface MulterFile {
  key: string // Available using `S3`.
  path: string // Available using `DiskStorage`.
  mimetype: string
  originalname: string
  size: number
}

app.get(function (req: express.Request & { files: MulterFile[] }, res: express.Response) {})

I’d be happy to formalise this more and put them here for everyone to use.

[hakudev]

Install the type definitions for multer.

bash npm install --save @types/multer