fuzzy-date/fuzzy-date.html

<link rel="import" href="../polymer/polymer-element.html">
<script src="../moment/moment.js"></script>

<dom-module id="fuzzy-date">
  <template>
    <style>
      :host {
        display: block;
      }
    </style>
    <span>[[_formatDate(date)]]</span>
  </template>

  <script>
    /**
     * `fuzzy-date`
     * A simple element that shows dates in a format understood by humans
     *
     * @customElement
     * @polymer
     * @demo demo/index.html
     */
    class FuzzyDate extends Polymer.Element {
      static get is() { return 'fuzzy-date'; }
      static get properties() {
        return {
          date: {
            type: String,
            reflectToAttribute: true
          }
        };
      }

      _formatDate(dateString){
        return moment(dateString).fromNow();
      }
    }

    window.customElements.define(FuzzyDate.is, FuzzyDate);
  </script>
</dom-module>