// Pre-selects the OS tab (`<Tabs groupId="os">`) based on the visitor's

// platform, so first-time visitors see install instructions for their own

// operating system. Docusaurus persists tab choice under

// `docusaurus.tab.<groupId>`; setting that key before the Tabs component

// hydrates makes it pick our value as the default. We never overwrite an

// existing value, so a user's manual pick continues to win.

const STORAGE_KEY = "docusaurus.tab.os";

function detectOs(): "linux" | "macos" | "windows" | undefined {

const ua = navigator.userAgent || "";

const platform = (navigator.platform || "").toLowerCase();

if (/Mac|Darwin/i.test(ua) || platform.includes("mac")) return "macos";

if (/Win/i.test(ua) || platform.includes("win")) return "windows";

if (/Linux|X11|CrOS/i.test(ua)) return "linux";

return undefined;

}

if (typeof window !== "undefined") {

try {

if (!localStorage.getItem(STORAGE_KEY)) {

const os = detectOs();

if (os) localStorage.setItem(STORAGE_KEY, os);

}

} catch {

// localStorage may be unavailable (private mode, disabled cookies); ignore.

}

}

export {};