@mapbox/react-map-gl/dist/es5/utils/geolocate-utils.js

A React wrapper for MapboxGL-js and overlay API.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isGeolocationSupported = isGeolocationSupported;

/* global window */
var supported;

function isGeolocationSupported() {
  // not necessary to check again
  if (supported !== undefined) {
    return Promise.resolve(supported);
  }

  if (window.navigator.permissions !== undefined) {
    // navigator.permissions has incomplete browser support
    // http://caniuse.com/#feat=permissions-api
    // Test for the case where a browser disables Geolocation because of an
    // insecure origin
    return window.navigator.permissions.query({
      name: 'geolocation'
    }).then(function (p) {
      supported = p.state !== 'denied';
      return supported;
    });
  }

  supported = Boolean(window.navigator.geolocation);
  return Promise.resolve(supported);
}
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