Distance calculation between two points using esri javascript api

Question

We are building a web application that uses an esri map. What i am trying to do is calculate the distance between two points. The coordinates for these points are in two separate json objects. Next i generate two esri points by parsing the latitude and the longitude values from these two json objects. Esri points require spatial reference, so i set the spatial reference of the mapView as the spatial reference for the two points.

The Problem: When i select the two points, it completely rewrites the latitude and the longitude of one of the points. This results in a ridiculous calculation of the two points.

This is what i have tried

//calling the distance function

distance = this.distanceCalculator(incidentCenter, residence);

//distance calc function
  private distanceCalculator(firstPt, secondPt): any {
    //this.measureLayer.removeAll();

    // When calculating the distance betweeen two points , we need to decypher the points coming in and attach a spatial reference.
    const pointA: esri.Point = new this.Point({
      spatialReference: this.mapView$.value.spatialReference,
      latitude: firstPt.latitude,
      longitude: firstPt.longitude
    });

    //so whats happening here is that 
    const pointB: esri.Point = new this.Point({
      spatialReference: this.mapView$.value.spatialReference,
      latitude: secondPt.latitude,
      longitude: secondPt.longitude
    });


    console.log("Point a and B");
    console.log("point a: ", pointA);
    console.log("point b: ", pointB);

    // Next we call the GemoetryEngine distance function and calculate the distance between the two points.

    try {
      const miles = this.GeometryEngine.distance(pointA, pointB, 'kilometers');
      const kms = miles * this.MilesToKm;
      return kms.toFixed(2);
    } catch (e) {
      this.logger.error('Error indistanceCalculator ', e);
    }
  }

Screenshots

After selecting the two points , i noticed that the second point has incorrect lat/long values.

This calculates the distance between the two points as

the actual distance is supposed to be the following (esri widget result)

If i were to select the two points again, it generates the correct distance

Answer 1

Egg on face moment for me, I was setting the lat and long wrong one point in the code that resulted in this error. Thank you all for the help.