Geolocation module

geolocation.ts

import { Observable } from 'rxjs';

const hasApi = 'geolocation' in navigator;

export const Geolocation = {
  getCurrentPosition(
    options: PositionOptions = {}
  ): Promise<GeolocationPosition> {
    return new Promise((resolve, reject) => {
      if (!hasApi) {
        reject('The Geolocation API is not available on this browser');
      }
      navigator.geolocation.getCurrentPosition(resolve, reject, options);
    });
  },
  watchPosition(
    options: PositionOptions = {}
  ): Observable<GeolocationPosition> {
    return new Observable((subscriber) => {
      if (!hasApi) {
        subscriber.error(
          'The Geolocation API is not available on this browser'
        );
        subscriber.complete();
      }
      navigator.geolocation.watchPosition(
        (position) => subscriber.next(position),
        (error) => subscriber.error(error),
        options
      );
    });
  },
};