nl_tokens: Format a size in bytes into a human - readable string with metric unit prefixes .
pl_tokens: function formatSize ( sizeBytes ) { if ( sizeBytes < 1024 ) { return sizeBytes + ' B' ; } var i , sizeVal = sizeBytes , precision = 1 ; for ( i = 0 ; sizeVal >= 1024 ; i += 1 ) { sizeVal /= 1024 ; } // If we are just reporting a low number, no need for decimal places. if ( sizeVal < 10 ) { precision = 3 ; } else if ( sizeVal < 100 ) { precision = 2 ; } return sizeVal . toFixed ( precision ) + ' ' + [ 'B' , 'kB' , 'MB' , 'GB' , 'TB' ] [ Math . <mask> ( i , 4 ) ] ; }