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function get_query_params(url) {
var search = new URL(url).search;
if (!search) {
return {};
}
var ret = {};
var params = search.substring(1).split("&");
params.forEach(function (param) {
var element = param.split("=");
ret[decodeURIComponent(element[0])] = decodeURIComponent(element[1]);
});
return ret;
}
addEventListener("fetch", function (event) {
if (event.request.url.includes("fail.html")) {
event.respondWith(fetch("hello.html", { integrity: "abc" }));
} else if (event.request.url.includes("fake.html")) {
event.respondWith(fetch("hello.html"));
} else if (event.request.url.includes("file_js_cache")) {
event.respondWith(fetch(event.request));
} else if (event.request.url.includes("redirect")) {
let param = get_query_params(event.request.url);
let url = param.url;
let mode = param.mode;
event.respondWith(fetch(url, { mode }));
}
});
addEventListener("activate", function (event) {
event.waitUntil(clients.claim());
});