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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/* eslint-env worker */
"use strict";
// Copied from shared-head.js
function waitUntil(predicate, interval = 10) {
if (predicate()) {
return Promise.resolve(true);
}
return new Promise(resolve => {
setTimeout(function () {
waitUntil(predicate, interval).then(() => resolve(true));
}, interval);
});
}
// This flag will be flipped from controlled-sw.html::installServiceWorker()
let canInstall = false;
self.addEventListener("message", function (event) {
if (event.data === "install-service-worker") {
canInstall = true;
}
});
// Wait for the canInstall flag to be flipped before completing the install.
self.addEventListener("install", function (event) {
event.waitUntil(waitUntil(() => canInstall));
});
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