v0.31 trim() failing with an unclear error message

[mquandalle]

Updating sharp from v0.30.7 to v0.31.0, I'm getting an error with the following code:

const img = sharp(imgPath).trim();
await img.toFile(newImgPath)

The error message is a bit cryptic:

[Error: linear: vector must have 1 or 4 elements]

Image:

The error is still present in v0.32

[lovell]

Hi, thanks for reporting, this image is CMYK and it looks like the trim() operation is erroneously dropping the K channel internally when determining the background colour, hence the rather cryptic error message. This code could probably do with a bit of a refactor anyway so leave it with me.

[lovell]

Commit 8408e99 makes the background colour logic more generic, which fixes this problem. There's also a new test that would previously have failed.

[mquandalle]

Thank you so much for the super quick response and fix!

[lovell]

v0.32.1 now available.