export class Duration { static toMilliSeconds( duration:number ) { return duration * 1000; } static fromMilliSeconds( duration:number ) { return duration / 1000; } static toMinutes( duration:number ) { return duration / 60; } static fromMinutes( minutes:number ) { return minutes * 60; } static toHours( duration:number ) { return this.toMinutes( duration ) / 60; } static fromHours( hours:number ) { return this.fromMinutes( hours * 60 ); } static toDays( duration:number ) { return this.toHours( duration ) / 24; } static fromDays( days:number ) { return this.fromHours( days * 24 ); } }