stats() on CMYK image: vips_colourspace: no known route from 'cmyk' to 'b-w'

The following code (with a CMYK JPEG as input) gives the error outlined below:

const sharp = require('sharp')
sharp('cmyk.jpg')
  .stats()
  .then(res => console.log('SUCCESS', res))
  .catch(err => console.error('ERROR', err))

Output:

ERROR [Error: vips_colourspace: no known route from 'cmyk' to 'b-w']

The following seems to work:

const sharp = require('sharp')
sharp('cmyk.jpg')
  .toColorspace('srgb')
  .toBuffer()
  .then(res => sharp(res).stats())
  .then(res => console.log('SUCCESS', res))
  .catch(err => console.error('ERROR', err))

[lovell]

sharp v0.23.0 / libvips v8.8.1 is now available.

[sebastienbarre]

Hi. Sorry to chime-in that late, but I can’t get this to work either:

  sharp(file)
    .toColorspace('lch')
    .toBuffer()
    .then(data => sharp(data).stats())
    .then(stats => console.log(stats))
    .catch(error => signale.error('Failed getting stats. ' + error.message));

This returns the same stats, whether I convert to 'srgb', or 'lch', or 'lab'. Am I not understanding the stats function correctly? I thought it would give me the stats for the L, C, H channels, which would be different than stats for R, G, B channels.

Thanks