Image not being resized

[hornta]

When performing a resize, then an extract and then an resize again, the final image is not being resized(the actual image is resized, but not the dimensions)

Clone my repo and test https://github.com/hornta/sharp-resize-bug

const sharp = require('sharp');
sharp('dog.jpg')
  .resize(50)
  .extract({
    left: 0, 
    top: 0, 
    width: 25, 
    height: 25
  })
  .resize(1000)
  .jpeg()
  .toFile('bigDog.jpg');

bigDog.jpg results in a 25x25 pixels image when it should end up with a 1000px wide image

[lovell]

Hello, if you want to resize to 50 pixels wide, extract the top-left 25x25 region then resize to 1000 pixels wide, try something like the following:

sharp('dog.jpg')
  .resize(50)
  .extract({
    left: 0, 
    top: 0, 
    width: 25, 
    height: 25
  })
  .toBuffer()
  .then(data => sharp(data)
    .resize(1000)
    .toFile('bigDog.jpg')
  );

[hornta]

Is there a reason I have to do it like that? Why is not my example working? I think most people would expect it to work like my example. This was just a very specific example, but I need to follow that order.

[lovell]

Although resize can be called multiple times to set/update options, the current implementation supports one resize operation per instance.

You may be interested in a discussion about an alternative API at #241.