samples/cordova/text_chat/www/libs/stickerpipe/js/stickerpipe.js
function defaultImageSrcGenerator(icon, options) {
			return ''.concat(options.base, options.size, '/', icon, options.ext);
		}
function defaultImageSrcGenerator(icon, options) {
			return ''.concat(options.base, options.size, '/', icon, options.ext);
		}
function defaultImageSrcGenerator ( icon , options ) { return '' . concat ( options . base , options . size , '/' , icon , options . ext ) ; }
Default callback used to generate emoji src
based on Twitter CDN
@param   string    the emoji codepoint string
@param   string    the default size to use, i.e. "36x36"
@param   string    optional "\uFE0F" variant char, ignored by default
@return  string    the image source to use
Default callback used to generate emoji src based on Twitter CDN