blob: 71c88c721af12d2e30ddf833ef4eeb195a095e22 (
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let value = "";
let fetch_url = "";
self.onfetch = function (e) {
fetch_url = e.request.url;
};
// Call clients.claim() to enable fetch event.
self.addEventListener("activate", e => {
e.waitUntil(self.clients.claim());
});
self.addEventListener("message", async e => {
let res = {};
switch (e.data.type) {
case "GetHWConcurrency":
res.result = "OK";
res.value = navigator.hardwareConcurrency;
break;
case "GetScriptValue":
res.result = "OK";
res.value = value;
break;
case "SetScriptValue":
res.result = "OK";
value = e.data.value;
break;
case "HasCache":
// Return if the cache storage exists or not.
try {
res.value = await caches.has(e.data.value);
res.result = "OK";
} catch (e) {
res.result = "ERROR";
}
break;
case "SetCache":
// Open a cache storage with the given name.
try {
let cache = await caches.open(e.data.value);
await cache.add("empty.js");
res.result = "OK";
} catch (e) {
res.result = "ERROR";
}
break;
case "SetIndexedDB":
await new Promise(resolve => {
let idxDB = indexedDB.open("test", 1);
idxDB.onupgradeneeded = evt => {
let db = evt.target.result;
db.createObjectStore("foobar", { keyPath: "id" });
};
idxDB.onsuccess = evt => {
let db = evt.target.result;
db
.transaction("foobar", "readwrite")
.objectStore("foobar")
.put({ id: 1, value: e.data.value }).onsuccess = _ => {
resolve();
};
};
});
res.result = "OK";
break;
case "GetIndexedDB":
res.value = await new Promise(resolve => {
let idxDB = indexedDB.open("test", 1);
idxDB.onsuccess = evt => {
let db = evt.target.result;
db.transaction("foobar").objectStore("foobar").get(1).onsuccess =
ee => {
resolve(
ee.target.result === undefined ? "" : ee.target.result.value
);
};
};
});
res.result = "OK";
break;
case "GetFetchURL":
res.value = fetch_url;
fetch_url = "";
res.result = "OK";
break;
default:
res.result = "ERROR";
}
e.source.postMessage(res);
});
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