How to catch error throw in the middleware?

[raphaelsoul]

Just set file size limit can server throws an error with 500 status code.

I need to catch Error:File too large` and throw 416 code.

router.post('/upload', upload.single('file'), async ctx => {
    // how to catch error here ?
})

[naughtyB]

i also need to know how to catch error

[raphaelsoul]

@naughtyB

router.post('/upload', async ctx => {
    // how to catch error here 
    try {
        await upload.single('file')
    } catch (e) {
        // this might works. I haven't tried.
    }
})

I am using busboy to handle uploaded file now.

[shenjo]

@raphaelsoul Obviously, this cannot work ,thus upload.single('file') is a function , and the function doesn't execute. Maybe you can await upload.single('file')(ctx,next) , (I have't try)

[alexdeia]

It works:

const upload = multer({ storage }).single('zip')

router.post('/upload', async (ctx, next) => {
  try {
    await upload(ctx, next)
  } catch (e) {
    console.log('error')
    ctx.throw(400, 'Error loading file')
  }
}, Ctrl.loadZip)