29 lines
796 B
JavaScript
29 lines
796 B
JavaScript
/* eslint-env serviceworker */
|
|
|
|
var VERSION = require('./package.json').version
|
|
var URLS = process.env.FILE_LIST
|
|
|
|
// Respond with cached resources
|
|
self.addEventListener('fetch', function (e) {
|
|
e.respondWith(self.caches.match(e.request).then(function (request) {
|
|
if (request) return request
|
|
else return self.fetch(e.request)
|
|
}))
|
|
})
|
|
|
|
// Register worker
|
|
self.addEventListener('install', function (e) {
|
|
e.waitUntil(self.caches.open(VERSION).then(function (cache) {
|
|
return cache.addAll(URLS)
|
|
}))
|
|
})
|
|
|
|
// Remove outdated resources
|
|
self.addEventListener('activate', function (e) {
|
|
e.waitUntil(self.caches.keys().then(function (keyList) {
|
|
return Promise.all(keyList.map(function (key, i) {
|
|
if (keyList[i] !== VERSION) return self.caches.delete(keyList[i])
|
|
}))
|
|
}))
|
|
})
|