Need example of moment-precicse-range "preciseDiff" please

Hello, I am having trouble getting moment-precise-range working with Vue.

I am wanting to use the preciseDiff function. Ie. var diff = moment.preciseDiff(moment1, moment2, true) where diff will = “4 years 2 months 12 days 4 hours 2 minutes” :smiley:

No matter what I try I get “preciseDiff” is not a function of moment.

Any example would be great.