function toggleMenu()

in blocks/header/header.js [55:86]

• 29 lines of code
• 12 McCabe index (conditional complexity)

function toggleMenu(nav, navSections, forceExpanded = null) {
  const expanded = forceExpanded !== null ? !forceExpanded : nav.getAttribute('aria-expanded') === 'true';
  const button = nav.querySelector('.nav-hamburger button');
  document.body.style.overflowY = (expanded || isDesktop.matches) ? '' : 'hidden';
  nav.setAttribute('aria-expanded', expanded ? 'false' : 'true');
  toggleAllNavSections(navSections, expanded || isDesktop.matches ? 'false' : 'true');
  button.setAttribute('aria-label', expanded ? 'Open navigation' : 'Close navigation');
  // enable nav dropdown keyboard accessibility
  const navDrops = navSections.querySelectorAll('.nav-drop');
  if (isDesktop.matches) {
    navDrops.forEach((drop) => {
      if (!drop.hasAttribute('tabindex')) {
        drop.setAttribute('role', 'button');
        drop.setAttribute('tabindex', 0);
        drop.addEventListener('focus', focusNavSection);
      }
    });
  } else {
    navDrops.forEach((drop) => {
      drop.removeAttribute('role');
      drop.removeAttribute('tabindex');
      drop.removeEventListener('focus', focusNavSection);
    });
  }
  // enable menu collapse on escape keypress
  if (!expanded || isDesktop.matches) {
    // collapse menu on escape press
    window.addEventListener('keydown', closeOnEscape);
  } else {
    window.removeEventListener('keydown', closeOnEscape);
  }
}