How to use the ember-metrics/metrics-adapters/base.extend function in ember-metrics

import BaseAdapter from 'ember-metrics/metrics-adapters/base';
import { get } from '@ember/object';

export default BaseAdapter.extend({
  toStringExtension() {
    return 'TwitterPixel';
  },

  init() {
    const { id } = get(this, 'config');
    /* eslint-disable */
    !function(e,t,n,s,u,a){e.twq||(s=e.twq=function(){s.exe?s.exe.apply(s,arguments):s.queue.push(arguments);
    },s.version='1.1',s.queue=[],u=t.createElement(n),u.async=!0,u.src='//static.ads-twitter.com/uwt.js',
    a=t.getElementsByTagName(n)[0],a.parentNode.insertBefore(u,a))}(window,document,'script');
    /* eslint-enable */
    window.twq('init', id);
  },

  trackPage(options = {}) {
    window.twq('track', 'PageView', options);

import BaseAdapter from 'ember-metrics/metrics-adapters/base';
import { get, set } from '@ember/object';
import jQuery from 'jquery';
import Config from 'client/config/environment';
import canUseDOM from 'client/utils/can-use-dom';

export default BaseAdapter.extend({
  toStringExtension() {
    return 'Stream';
  },

  init() {
    const environment = Config.kitsu.isStaging ? 'staging' : Config.environment;
    const config = get(this, `config.${environment}`);
    if (canUseDOM) {
      // eslint-disable-next-line
      !function(t,e){t("StreamAnalytics","https://d2j1fszo1axgmp.cloudfront.net/2.6.0/stream-analytics.min.js",e)}(function(t,e,n){var s,i,r;n["_"+t]={},n[t]=function(e){n["_"+t].clients=n["_"+t].clients||{},n["_"+t].clients[e.apiKey]=this,this._config=e};var c=function(t){return function(){return this["_"+t]=this["_"+t]||[],this["_"+t].push(arguments),this}};s=["setUser","trackImpression","trackEngagement"];for(var a=0;a

import BaseAdapter from 'ember-metrics/metrics-adapters/base';
import { get } from '@ember/object';
import { compact, without } from 'ember-metrics/utils/object-transforms';

export default BaseAdapter.extend({
  toStringExtension() {
    return 'GoSquared';
  },

  init() {
    const { id } = get(this, 'config');
    /* eslint-disable */
    !function(g,s,q,r,d){r=g[r]=g[r]||function(){(r.q=r.q||[]).push(
    arguments)};d=s.createElement(q);q=s.getElementsByTagName(q)[0];
    d.src='//d1l6p2sc9645hc.cloudfront.net/tracker.js';q.parentNode.
    insertBefore(d,q)}(window,document,'script','_gs');
    /* eslint-enable */
    if (window._gs && id) {
      window._gs(id, false);
    }
  },

import BaseAdapter from 'ember-metrics/metrics-adapters/base';
import { compact, without } from 'ember-metrics/utils/object-transforms';
import get from 'ember-metal/get';
import canUseDOM from 'client/utils/can-use-dom';
import jQuery from 'jquery';

export default BaseAdapter.extend({
  toStringExtension() {
    return 'Heap';
  },

  init() {
    const { appId } = get(this, 'config');
    if (canUseDOM) {
      /* eslint-disable */
      window.heap=window.heap||[],heap.load=function(e,t){window.heap.appid=e,window.heap.config=t=t||{};var r=t.forceSSL||"https:"===document.location.protocol,a=document.createElement("script");a.type="text/javascript",a.async=!0,a.src=(r?"https:":"http:")+"//cdn.heapanalytics.com/js/heap-"+e+".js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(a,n);for(var o=function(e){return function(){heap.push([e].concat(Array.prototype.slice.call(arguments,0)))}},p=["addEventProperties","addUserProperties","clearEventProperties","identify","removeEventProperty","setEventProperties","track","unsetEventProperty"],c=0;c

import { inject } from '@ember/service';
import BaseAdapter from 'ember-metrics/metrics-adapters/base';

export default BaseAdapter.extend({
  application: inject(),

  toStringExtension() {
    return 'LocalDummy';
  },

  init() {
    this.set('application.foo', 'bar');
  },

  trackEvent({ controller }) {
    if (controller) {
      controller.set('foo', 'bar');
    }
  },

import Ember from 'ember';
import md5 from 'npm:js-md5';
import _get from 'npm:lodash/get';
import Cookie from 'npm:js-cookie';
import config from 'ember-get-config';
import keenTracking from 'npm:keen-tracking';
import BaseAdapter from 'ember-metrics/metrics-adapters/base';

export default BaseAdapter.extend({
    session: Ember.inject.service(),

    toStringExtension() {
        return 'Keen';
    },

    init() {},

    trackEvent(properties, node) {
        window.contextVars = {};
        window.contextVars.currentUser = this.userContextVars();
        window.contextVars.node = this.nodeContextVars(node);
        return this.KeenTracker().getInstance().trackPrivateEvent('front-end-events', { interaction: properties });
    },

    trackPage(properties) {