I have been leaning to make PWA and I have notice google dev tools are not properly simulating offline feature of service worker.
I am talking about this feature showed in image.
I am using
package.json
"devDependencies": {
"http-server": "^0.9.0"
}
for localhost web server
SW.js file
var CACHE_STATIC_NAME = 'static-v10';
var CACHE_DYNAMIC_NAME = 'dynamic-v2';
self.addEventListener('install', function(event) {
console.log('[Service Worker] Installing Service Worker ...', event);
event.waitUntil(
caches.open(CACHE_STATIC_NAME)
.then(function(cache) {
console.log('[Service Worker] Precaching App Shell');
cache.addAll([
'/',
'/index.html',
'/offline.html',
'/src/js/app.js',
'/src/js/feed.js',
'/src/js/promise.js',
'/src/js/fetch.js',
'/src/js/material.min.js',
'/src/css/app.css',
'/src/css/feed.css',
'/src/images/main-image.jpg',
'https://fonts.googleapis.com/css?family=Roboto:400,700',
'https://fonts.googleapis.com/icon?family=Material+Icons',
'https://cdnjs.cloudflare.com/ajax/libs/material-design-lite/1.3.0/material.indigo-pink.min.css'
]);
})
)
});
self.addEventListener('activate', function(event) {
console.log('[Service Worker] Activating Service Worker ....', event);
event.waitUntil(
caches.keys()
.then(function(keyList) {
return Promise.all(keyList.map(function(key) {
if (key !== CACHE_STATIC_NAME && key !== CACHE_DYNAMIC_NAME) {
console.log('[Service Worker] Removing old cache.', key);
return caches.delete(key);
}
}));
})
);
return self.clients.claim();
});
self.addEventListener('fetch', function(event) {
event.respondWith(
caches.match(event.request)
.then(function(response) {
if (response) {
return response;
} else {
return fetch(event.request)
.then(function(res) {
return caches.open(CACHE_DYNAMIC_NAME)
.then(function(cache) {
cache.put(event.request.url, res.clone());
return res;
})
})
.catch(function(err) {
return caches.open(CACHE_STATIC_NAME)
.then(function(cache) {
return cache.match('/offline.html');
});
});
}
})
);
});
this is service worker file. I am trying to show offline.html page if any page
let me know if you need any thing more regarding project I am working with