upytest/mini-coi.js at main · pyscript/upytest · GitHub

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/*! coi-serviceworker v0.1.7 - Guido Zuidhof and contributors, licensed under MIT */

/*! mini-coi - Andrea Giammarchi and contributors, licensed under MIT */

(({ document: d, navigator: { serviceWorker: s } }) => {

if (d) {

const { currentScript: c } = d;

s.register(c.src, { scope: c.getAttribute('scope') || '.' }).then(r => {

r.addEventListener('updatefound', () => location.reload());

if (r.active && !s.controller) location.reload();

});

}

else {

addEventListener('install', () => skipWaiting());

addEventListener('activate', e => e.waitUntil(clients.claim()));

addEventListener('fetch', e => {

const { request: r } = e;

if (r.cache === 'only-if-cached' && r.mode !== 'same-origin') return;

e.respondWith(fetch(r).then(r => {

const { body, status, statusText } = r;

if (!status || status > 399) return r;

const h = new Headers(r.headers);

h.set('Cross-Origin-Opener-Policy', 'same-origin');

h.set('Cross-Origin-Embedder-Policy', 'require-corp');

h.set('Cross-Origin-Resource-Policy', 'cross-origin');

return new Response(body, { status, statusText, headers: h });

}));

});

}

})(self);

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