export const repeat = ( str , times ) => new Array ( times + 1 ) . join ( str ) ; export const pad = ( num , maxLength ) => repeat ( '0' , maxLength - num . toString ( ) . length ) + num ; export const formatTime = ( time ) => `${ pad ( time . getHours ( ) , 2 ) }:${ pad ( time . getMinutes ( ) , 2 ) }:${ pad ( time . getSeconds ( ) , 2 ) }.${ pad ( time . getMilliseconds ( ) , 3 ) }` ; export const timer = typeof performance !== 'undefined' && performance !== null && typeof performance . now === 'function' ? performance : Date ;