Implementing a Duration typing feature for momentjs in TypeScript

Struggling to modify the Duration interface in the momentjs package

I need to calculate months based on a 30-day period, but version 2.24.0 returns around 0.94 months instead of 1

Unfortunately, my attempt to add a function like this has not been successful:

        Duration.getRealMonths = function () {
          return Math.floor(this.as('days')/30);
        }

Here's a stack blitz for reference: https://stackblitz.com/edit/angular-moment-example-6kknck

The expected behavior is for:

let duration: Duration = moment.duration(30,'days');

to return 1

Answer №1

It is important to make sure that you have imported the type Duration. Consider using moment.duration instead, as it is likely the correct type for Duration.

Additionally, please note that the function getRealMonths does not exist on Duration, so you cannot simply add it without causing issues.

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