(function(scope){ 'use strict'; imprint.registerTest("colorDepth", function(){ return new Promise(function(resolve) { var cd = screen.colorDepth; // Some browsers return 24 rather than 32 as 32 is really // 24 bit color depth + 8 bits alpha, so they see the alpha // as not really being "color" so report 24 instead. // For consistancy, treat all 32 color depths as 24. if (cd === 32) { cd = 24; } return resolve(cd || ""); }); }); })(window);