How to use moment-duration-format in TypeScript?

Question

I am using moment.js in my TypeScript (Ionic2/Angular2) project. Following on from this post, I now want to try out a plugin moment-duration-format

I have the npm packag

Answer 1

You are using duration as a property instead of invoking it. Try:

let dd = moment.duration(400.99, 'hours').format('D:HH:mm');

This is actually not a TypeScript problem. It wouldn't work with JavaScript either. In JavaSctript you would get a runtime error while TypeScript doesn't let you do it at compile time (proving its worth).