evrythng/src/util/getCurrentPosition.js

Official Javascript SDK for the EVRYTHNG API.

// Maximum acceptable age of cached location from the browser
const maximumAge = 5 * 60 * 1000

/**
 * Get browser's current position from Geolocation API.
 *
 * @return {Promise} - Resolves with current position or rejects with failure
 * explanation.
 */
export default function getCurrentPosition () {
  return new Promise((resolve, reject) => {
    if (typeof window === 'undefined' || !window.navigator.geolocation) {
      throw new Error('Geolocation API not available.')
    }

    const geolocationOptions = {
      maximumAge,
      timeout: 10000,
      enableHighAccuracy: true
    }

    window.navigator.geolocation.getCurrentPosition(
      resolve,
      (err) => reject(err),
      geolocationOptions
    )
  })
}