| self.addEventListener('activate', event => { | |
| event.waitUntil( | |
| self.registration.navigationPreload.enable()); | |
| }); | |
| self.addEventListener('fetch', event => { | |
| event.respondWith( | |
| event.preloadResponse | |
| .then(res => res.text()) | |
| .then(text => { | |
| return new Response( | |
| '<body>[' + text + ']</body>', | |
| {headers: [['content-type', 'text/html']]}); | |
| })); | |
| }); |