An eyeglass module to give node-sass the same image dimension functionality found in ruby compass.
To use image dimensions first install eyeglass then eyeglass-image-dimensions:
npm install eyeglass eyeglass-image-dimensions --save-dev
Then add the following to your sass file/s:
@import 'image-dimensions';
returns the width of the image in pixels.
width: image-width($image);
returns the height of the image in pixels.
height: image-height($image);
returns a space separated list consisting of the width and height of an image in pixels.
background-size: image-dimensions($image);