Pre-consent tracker check

(function trackerSnapshot() {
	const resources = performance.getEntriesByType("resource");
	const hosts = /* @__PURE__ */ new Map();
	for (const resource of resources) try {
		const url = new URL(resource.name);
		if (["http:", "https:"].includes(url.protocol) && url.hostname !== location.hostname) hosts.set(url.hostname, (hosts.get(url.hostname) ?? 0) + 1);
	} catch {}
	const names = document.cookie.split(";").map((cookie) => cookie.trim().split("=")[0]).filter(Boolean);
	const gpc = navigator.globalPrivacyControl;
	const summary = [
		"BCT pre-consent observation",
		`Page origin ${location.origin}`,
		`GPC ${gpc === true ? "enabled" : gpc === false ? "disabled" : "not exposed"}`,
		`Other resource hosts ${hosts.size}`,
		...[...hosts].sort().map(([host, count]) => `${host} (${count} requests)`),
		`Readable cookie names ${names.length}`,
		names.join(", ") || "None observed",
		"Run on a fresh page before any consent interaction. This is the current observation, not a record of previous consent.",
		"Other hosts are not proof of tracking. Subdomains can be first-party. HttpOnly cookies, server-side tracking, cleared timing entries, and later interactions are outside this check."
	].join("\n");
	const panel = document.createElement("dialog");
	panel.setAttribute("aria-label", "Pre-consent tracker observation");
	panel.style.cssText = "max-width:min(90vw,780px);max-height:85vh;background:white;color:#090d14;padding:24px;border:1px solid #697386;border-radius:8px;font:16px/1.5 system-ui;overflow:auto";
	const heading = document.createElement("h2");
	heading.textContent = "Pre-consent tracker observation";
	const text = document.createElement("pre");
	text.textContent = summary;
	text.style.cssText = "white-space:pre-wrap;overflow-wrap:anywhere;font:inherit";
	const copy = document.createElement("button");
	copy.textContent = "Copy summary";
	copy.style.cssText = "font:inherit;padding:10px;margin-right:12px";
	copy.onclick = async () => {
		try {
			await navigator.clipboard.writeText(summary);
			copy.textContent = "Summary copied";
		} catch {
			copy.textContent = "Select the text above to copy";
		}
	};
	const close = document.createElement("button");
	close.textContent = "Close";
	close.style.cssText = "font:inherit;padding:10px";
	close.onclick = () => {
		panel.close();
		panel.remove();
	};
	panel.append(heading, text, copy, close);
	document.body.append(panel);
	panel.showModal();
	return {
		hosts: [...hosts],
		cookieNames: names,
		gpc: gpc ?? null,
		summary
	};
})()