LearnBoost/node-canvas — pull request #370 by rcoup (2013-12-24 00:32:41+00:00)
Title: Add CAIRO_FORMAT_INVALID

Fixes https://github.com/LearnBoost/node-canvas/issues/342

Ubuntu Lucid LTS has Cairo 1.8.10 which doesn't support it. Copied the value from http://cairographics.org/manual/cairo-Image-Surfaces.html