зеркало из https://github.com/mozilla/gecko-dev.git
35 строки
1.3 KiB
JavaScript
35 строки
1.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* global addMessageListener */
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"use strict";
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let { classes: Cc, interfaces: Ci } = Components;
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let swm = Cc["@mozilla.org/serviceworkers/manager;1"]
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.getService(Ci.nsIServiceWorkerManager);
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addMessageListener("serviceWorkerRegistration:start", message => {
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let { data } = message;
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let array = swm.getAllRegistrations();
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// Find the service worker registration with the desired scope.
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for (let i = 0; i < array.length; i++) {
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let registration =
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array.queryElementAt(i, Ci.nsIServiceWorkerRegistrationInfo);
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// XXX: In some rare cases, `registration.activeWorker` can be null for a
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// brief moment (e.g. while the service worker is first installing, or if
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// there was an unhandled exception during install that will cause the
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// registration to be removed). We can't do much about it here, simply
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// ignore these cases.
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if (registration.scope === data.scope && registration.activeWorker) {
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// Briefly attaching a debugger to the active service worker will cause
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// it to start running.
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registration.activeWorker.attachDebugger();
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registration.activeWorker.detachDebugger();
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return;
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}
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}
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});
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