shadcn sidebar cookie state

sidebar.tsx

const SIDEBAR_DEFAULT_OPEN = true; /* (add) */
const SIDEBAR_COOKIE_NAME = "_sidebar";
const SIDEBAR_COOKIE_MAX_AGE = 60 * 60 * 24 * 7;
// ...

function SidebarProvider({
  defaultOpen, /* :true (remove) */
  // ...
}
// ...
) {

const [_open, _setOpen] = React.useState(() => {
    if (defaultOpen !== undefined) {
      return defaultOpen;
    }

    const cookies = Object.fromEntries(
      document.cookie.split("; ").map((c) => {
        const [key, ...v] = c.split("=");
        return [key, v.join("=")];
      }),
    );

    const sideBarCookie = cookies[SIDEBAR_COOKIE_NAME];
    return sideBarCookie != null
      ? sideBarCookie === "true"
      : SIDEBAR_DEFAULT_OPEN;
  })

// ...