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/**
* We are used by test_formSubmission.html to immediately activate and start
* controlling its page. We operate in 3 modes, conveyed via ?MODE appended to
* our URL.
*
* - "no-fetch": Don't register a fetch listener so that the optimized fetch
* event bypass happens.
* - "reset-fetch": Do register a fetch listener, reset every interception.
* - "proxy-fetch": Do register a fetch listener, resolve every interception
* with fetch(event.request).
*/
const mode = location.search.slice(1);
// Fetch handling.
if (mode !== "no-fetch") {
addEventListener("fetch", function (event) {
if (mode === "reset-fetch") {
// Don't invoke respondWith, resetting the interception.
return;
}
if (mode === "proxy-fetch") {
// Per the spec, there's an automatic waitUntil() on this too.
event.respondWith(fetch(event.request));
}
});
}
// Go straight to activation, bypassing waiting.
addEventListener("install", function (event) {
event.waitUntil(skipWaiting());
});
// Control the test document ASAP.
addEventListener("activate", function (event) {
event.waitUntil(clients.claim());
});