An option to check if the pure pathname is different before pushing a new page track event

[unsignedmind]

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I'm submitting a ...

• bug report

• feature request

• question about the decisions made in the repository

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem

• What is the expected behavior?
  Implement an option to check if the pure pathname is different before pushing a new page track event.

public startTracking() {

    let prev = '';

    this.angulartics2.pageTrack.pipe(this.angulartics2.filterDeveloperMode()).subscribe((x) => {
      const pathPrev = prev.split('?')[0];
      const pathNext = x.path.split('?')[0];
      const changed = pathPrev !== pathNext;
      // console.log('dataLayer', '\nPAGETRACK:', x, '\nPREV: ', { prev, rawPrev: pathPrev }, '\nNEXT: ', { next: x.path, rawNext: pathNext }, dataLayer);
      prev = x.path;
      return changed ? this.pageTrack(x.path) : null;
    });
  }

• What is the motivation / use case for changing the behavior?
  We are building a webshop and on our product detail page there is a functionality that adds meta infos to the query params. When doing so the url changes and a page track event get's fired. So the same page get's tracked twice.

• Environment:
  angular 10 / angulartics 10

ng version: 6.13.4