Convert seconds to a human readable representation

convertTime.js

export function convertTime(seconds) {                     
  var seconds = parseInt(seconds, 10)                      
  var hours   = Math.floor(seconds / 3600)                 
  var minutes = Math.floor((seconds - (hours * 3600)) / 60)
  var seconds = seconds - (hours * 3600) - (minutes * 60)  
  if ( !!hours ) {                                         
    if ( !!minutes ) {                                     
      return `${hours}h ${minutes}m ${seconds}s`           
    } else {                                               
      return `${hours}h ${seconds}s`                       
    }                                                      
  }                                                        
  if ( !!minutes ) {                                       
    return `${minutes}m ${seconds}s`                       
  }                                                        
  return `${seconds}s`                                     
}