Moment.js with Vuejs

In your package.json in the "dependencies" section add moment:

"dependencies": {
  "moment": "^2.15.2",
  ...
}

In the component where you would like to use moment, import it:

<script>
import moment from 'moment'
...

And in the same component add a computed property:

computed: {
  timestamp: function () {
    return moment(this.<model>.attributes['created-at']).format('YYYY-MM-DD [at] hh:mm')
  }
}

And then in the template of this component:

<p>{{ timestamp }}</p>

I made it work with Vue 2.0 in single file component.

npm install moment in folder where you have vue installed

<template>
  <div v-for="meta in order.meta">
    {{ getHumanDate(meta.value.date) }}
  </div>
</template>

<script>
    import moment from 'moment';
    export default {
         methods: {
            getHumanDate : function (date) {
                return moment(date, 'YYYY-MM-DD').format('DD/MM/YYYY');
            }
        }
    }
</script>

With your code, the vue.js is trying to access the moment() method from its scope.

Hence you should use a method like this:

methods: {
  moment: function () {
    return moment();
  }
},

If you want to pass a date to the moment.js, I suggest to use filters:

filters: {
  moment: function (date) {
    return moment(date).format('MMMM Do YYYY, h:mm:ss a');
  }
}

<span>{{ date | moment }}</span>

[demo]

If your project is a single page application, (eg project created by vue init webpack myproject), I found this way is most intuitive and simple:

In main.js

import moment from 'moment'

Vue.prototype.moment = moment

Then in your template, simply use

<span>{{moment(date).format('YYYY-MM-DD')}}</span>