components-explorer-user.js.es6

import binarySearch from 'discourse/plugins/discourse-data-explorer/discourse/lib/binary-search';
export default Ember.Component.extend({
  tagName: 'td',
  user: function() {
    const valueInt = parseInt(this.get('value'));
    const userRelAry = this.get('extra.relations.user');
    const idx = binarySearch(userRelAry, valueInt);
    return userRelAry[idx];
  }.property('extra.relations', 'value')
});

templates-components-explorer-user.hbs

{{#if user}}
  <a href="/users/{{user.username}}/activity">{{avatar user imageSize="tiny"}} {{user.username}}</a>
{{else}}
  User #{{value}} (deleted)
{{/if}}