The type has the following constructor:

const duration = new  Duration(100, 'millisecond');

The second constructor parameter is a measurement unit with the following values:

• milliseconds
• seconds
• minutes
• hours
• days If the measurement unit is not specified,
  the default one is milliseconds.

  const duration = new  Duration(100); // 100 milliseconds 
  

  This type is immutable, so mutation methods return the updated value without changing the original one.

  const hour = new Duration(1, 'hours');
  const day = hour.add(new  Duration(23, 'hours')); 
  

module

Types