Svelte Geolocation API

location.js

import { writable, get } from 'svelte/store'

const initialState = {
  supported: false,
  allowed: false,
  error: null,
  location: null,
  loading: false,
  timestamp: -1,
}

export const geolocation = writable(initialState)

if ('geolocation' in navigator) {
  geolocation.update(state => ({ ...state, supported: true }))
}
export const readLocation = () => new Promise((resolve, reject) => {
  if (get(geolocation).supported) {
    geolocation.update(state => ({ ...state, loading: true }))
    navigator.geolocation.getCurrentPosition(({ coords, timestamp }) => {
      geolocation.set({ loading: false, supported: true, allowed: true, location: coords, timestamp, error: null })
      resolve({ geolocation: coords, timestamp })
    }, (error) => {
      geolocation.update(state => ({ ...state, error, loading: false }))
      reject(error)
    }, {
      enableHighAccuracy: true,
      maximumAge: 10000,
      timeout: 5000,
    })
  } else {
    reject(new Error('Seu navegador não é suportado'))
  }
})