service-worker.js

//! UpUp Service Worker
//! version : 1.0.0
//! author  : Tal Ater @TalAter
//! license : MIT
//! https://github.com/TalAter/UpUp
var _CACHE_NAME_PREFIX = 'upup-cache',
  _calculateHash = function(e) {
    var t,
      n = 0,
      s = (e = e.toString()).length;
    if (0 === s) return n;
    for (t = 0; t < s; t++) (n = (n << 5) - n + e.charCodeAt(t)), (n |= 0);
    return n;
  };
self.addEventListener('message', function(e) {
  'set-settings' === e.data.action && _parseSettingsAndCache(e.data.settings);
}),
  self.addEventListener('fetch', function(e) {
    e.respondWith(
      fetch(e.request).catch(function() {
        return caches.match(e.request).then(function(t) {
          return (
            t ||
            ('navigate' === e.request.mode ||
            ('GET' === e.request.method &&
              e.request.headers.get('accept').includes('text/html'))
              ? caches.match('sw-offline-content')
              : void 0)
          );
        });
      })
    );
  });
var _parseSettingsAndCache = function(e) {
    var t =
      _CACHE_NAME_PREFIX +
      '-' +
      (e['cache-version'] ? e['cache-version'] + '-' : '') +
      _calculateHash(e.content + e['content-url'] + e.assets);
    return caches
      .open(t)
      .then(function(t) {
        return (
          e.assets &&
            t.addAll(
              e.assets.map(function(e) {
                return new Request(e, { mode: 'no-cors' });
              })
            ),
          e['content-url']
            ? fetch(e['content-url'], { mode: 'no-cors' }).then(function(e) {
                return t.put('sw-offline-content', e);
              })
            : e.content
              ? t.put('sw-offline-content', _buildResponse(e.content))
              : t.put('sw-offline-content', _buildResponse('You are offline'))
        );
      })
      .then(function() {
        return caches.keys().then(function(e) {
          return Promise.all(
            e.map(function(e) {
              if (e.startsWith(_CACHE_NAME_PREFIX) && t !== e)
                return caches.delete(e);
            })
          );
        });
      });
  },
  _buildResponse = function(e) {
    return new Response(e, { headers: { 'Content-Type': 'text/html' } });
  };
//# sourceMappingURL=upup.sw.min.js.map