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sw.js
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sw.js
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/*global caches, fetch, Promise */
(function (worker) {
"use strict";
var PREFIX = 'sudoku',
VERSION = '2.6',
FILES = [
'app.css',
'index.html',
'sudoku.css',
'sudoku.png',
'icons/icon-512.png',
'js/app.js',
'js/l10n.js',
'js/perspective-transform.min.js',
'js/sudoku.js',
'js/sudoku-app.js',
'js/sudoku-ocr.js',
'js/sudoku-solve.js',
'l10n/de.properties',
'l10n/en.properties',
'l10n/locales.ini'
];
worker.addEventListener('install', function (e) {
e.waitUntil(
caches.open(PREFIX + ':' + VERSION).then(function (cache) {
return cache.addAll(FILES);
})
);
});
worker.addEventListener('activate', function (e) {
e.waitUntil(
caches.keys().then(function (keys) {
return Promise.all(keys.map(function (key) {
if (key.indexOf(PREFIX + ':') === 0 && key !== PREFIX + ':' + VERSION) {
return caches.delete(key);
}
}));
})
);
});
worker.addEventListener('fetch', function (e) {
e.respondWith(caches.match(e.request, {ignoreSearch: true})
.then(function (response) {
return response || fetch(e.request);
})
);
});
})(this);