Function SidebarProvider

packages/react/src/components/sidebar.tsx:43–136

({
  defaultOpen = true,
  open: openProp,
  onOpenChange: setOpenProp,
  className,
  style,
  children,
  ...props
}: React.ComponentProps<"div"> & {
  defaultOpen?: boolean;
  open?: boolean;
  onOpenChange?: (open: boolean) => void;
})

}

function SidebarProvider({
  defaultOpen = true,
  open: openProp,
  onOpenChange: setOpenProp,
  className,
  style,
  children,
  ...props
}: React.ComponentProps<"div"> & {
  defaultOpen?: boolean;
  open?: boolean;
  onOpenChange?: (open: boolean) => void;
}) {
  const isMobile = useIsMobile();
  const [openMobile, setOpenMobile] = React.useState(false);

  // This is the internal state of the sidebar.
  // We use openProp and setOpenProp for control from outside the component.
  const [_open, _setOpen] = React.useState(defaultOpen);
  const open = openProp ?? _open;
  const setOpen = React.useCallback(
    (value: boolean | ((value: boolean) => boolean)) => {
      const openState = typeof value === "function" ? value(open) : value;
      if (setOpenProp) {
        setOpenProp(openState);
      } else {
        _setOpen(openState);
      }

      // This sets the cookie to keep the sidebar state.
      document.cookie = `${SIDEBAR_COOKIE_NAME}=${openState}; path=/; max-age=${SIDEBAR_COOKIE_MAX_AGE}`;
    },
    [setOpenProp, open],
  );

  // Helper to toggle the sidebar.
  const toggleSidebar = React.useCallback(() => {
    return isMobile ? setOpenMobile((open) => !open) : setOpen((open) => !open);
  }, [isMobile, setOpen, setOpenMobile]);

  // Adds a keyboard shortcut to toggle the sidebar.
  React.useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === SIDEBAR_KEYBOARD_SHORTCUT && (event.metaKey || event.ctrlKey)) {
        event.preventDefault();
        toggleSidebar();
      }
    };

    window.addEventListener("keydown", handleKeyDown);
    return () => window.removeEventListener("keydown", handleKeyDown);
  }, [toggleSidebar]);

  // We add a state so that we can do data-state="expanded" or "collapsed".
  // This makes it easier to style the sidebar with Tailwind classes.
  const state = open ? "expanded" : "collapsed";

  const contextValue = React.useMemo<SidebarContextProps>(