how to get metadata width and height after trim

Is there a way to get width and height metadata after trim?

let transform = sharp()
    .trim()
    .metadata()
    .then(function(metadata) {
        console.log(metadata)
    })

return readableStream
            .pipe(transform)

This doesn’t seem to work

Thanks

[lovell]

Thank you for even more context. In the above example, padding_width has a value of 0 when extend() is called on transformer3.

You’ll probably want to defer this assignment, something like:

const transformer3 = sharp()
  .background(background)

const transformer2 = sharp()
  .trim()
  .on('info', trimmed_metadata => {
    ...
    transformer3.extend({ ... })
  })

[jaekunchoi]

thank you it works beautifully!