Included workaround for error 'Image given has not completed loading'...

[Brootux]

... of canvas-library. The error was happening when working with lots of images to compare.

Found workaround here: Automattic/node-canvas#254

Comparing now works for me. Hope this helps anybody.

[cburgmer]

Thanks. Also see #17, #31 and #35.

[Brootux]

Ill never tried this via comandline. Im using the node-module "grunt-screenshot-compare" wich uses "automated-screenshot-diff" wich in the end uses "js-imagediff".

I have no ressources to check if this solves all other use-cases, so maybe we should wait until other people patched their js-imagediff and give a positive response?

[cesutherland]

In the cases where the "Image given has not completed loading" the image data will be computed and returned before the image has been drawn.

[cesutherland]

This should be all sorted with the merge of #31