// Format bytes in human readable format define('helpers/formatSize', ['handlebars'], function(Handlebars) { function formatSize(bytes, options) { var sizes = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"]; if (bytes == 0) return '0 B'; var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024))); // round to two digits return (bytes / Math.pow(1024, i)).toFixed(2) + ' ' + sizes[i]; } Handlebars.registerHelper('formatSize', formatSize); return formatSize; });