diff --git a/coi-serviceworker.js b/coi-serviceworker.js new file mode 100644 index 0000000..baa08a0 --- /dev/null +++ b/coi-serviceworker.js @@ -0,0 +1,93 @@ +/*! coi-serviceworker v0.1.6 - Guido Zuidhof, licensed under MIT */ +if (typeof window === 'undefined') { + self.addEventListener("install", () => self.skipWaiting()); + self.addEventListener("activate", (event) => event.waitUntil(self.clients.claim())); + + self.addEventListener("message", (ev) => { + if (ev.data && ev.data.type === "deregister") { + self.registration + .unregister() + .then(() => { + return self.clients.matchAll(); + }) + .then(clients => { + clients.forEach((client) => client.navigate(client.url)); + }); + } + }); + + self.addEventListener("fetch", function (event) { + if (event.request.cache === "only-if-cached" && event.request.mode !== "same-origin") { + return; + } + + event.respondWith( + fetch(event.request) + .then((response) => { + if (response.status === 0) { + return response; + } + + const newHeaders = new Headers(response.headers); + newHeaders.set("Cross-Origin-Embedder-Policy", "require-corp"); + newHeaders.set("Cross-Origin-Opener-Policy", "same-origin"); + + return new Response(response.body, { + status: response.status, + statusText: response.statusText, + headers: newHeaders, + }); + }) + .catch((e) => console.error(e)) + ); + }); + +} else { + (() => { + // You can customize the behavior of this script through a global `coi` variable. + const coi = { + shouldRegister: () => true, + shouldDeregister: () => false, + doReload: () => window.location.reload(), + quiet: false, + ...window.coi + } + + const n = navigator; + if (coi.shouldDeregister() && n.serviceWorker && n.serviceWorker.controller) { + n.serviceWorker.controller.postMessage({ type: "deregister" }); + } + + // If we're already coi: do nothing. Perhaps it's due to this script doing its job, or COOP/COEP are + // already set from the origin server. Also if the browser has no notion of crossOriginIsolated, just give up here. + if (window.crossOriginIsolated !== false || !coi.shouldRegister()) return; + + if (!window.isSecureContext) { + !coi.quiet && console.log("COOP/COEP Service Worker not registered, a secure context is required."); + return; + } + + // In some environments (e.g. Chrome incognito mode) this won't be available + if (n.serviceWorker) { + n.serviceWorker.register(window.document.currentScript.src).then( + (registration) => { + !coi.quiet && console.log("COOP/COEP Service Worker registered", registration.scope); + + registration.addEventListener("updatefound", () => { + !coi.quiet && console.log("Reloading page to make use of updated COOP/COEP Service Worker."); + coi.doReload() + }); + + // If the registration is active, but it's not controlling the page + if (registration.active && !n.serviceWorker.controller) { + !coi.quiet && console.log("Reloading page to make use of COOP/COEP Service Worker."); + coi.doReload() + } + }, + (err) => { + !coi.quiet && console.error("COOP/COEP Service Worker failed to register:", err); + } + ); + } + })(); +} diff --git a/infinisim.html b/infinisim.html index bc45fec..359d925 100644 --- a/infinisim.html +++ b/infinisim.html @@ -1 +1 @@ -Emscripten-Generated Codeimage/svg+xml
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