22 lines
770 B
JavaScript
22 lines
770 B
JavaScript
async function get_prefetch_info(href) {
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const response = await fetch(`${href}&mode=info`, {mode: "cors"});
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return await response.json();
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}
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async function prefetch(p = {}, t) {
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const link = document.createElement("link");
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link.rel = "prefetch";
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link.as = p.as;
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if (p.crossOrigin)
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link.setAttribute("crossorigin", p.crossOrigin);
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const uid = token();
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const params = new URLSearchParams();
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params.set("key", uid);
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for (const key in p)
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params.set(key, p[key]);
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const origin = p.origin || '';
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link.href = `${origin}/preload/resources/prefetch-info.py?${params.toString()}`;
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document.head.appendChild(link);
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while (!(await get_prefetch_info(link.href)).length) { }
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return {href: link.href, uid};
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}
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