in doc/src/theme/NavbarItem/index.tsx [44:51]
function getComponentType(type: Types, isDropdown: boolean): NavbarItemComponentType {
// Backward compatibility: navbar item with no type set
// but containing dropdown items should use the type "dropdown"
if (!type || type === 'default') {
return isDropdown ? 'dropdown' : 'default';
}
return type as NavbarItemComponentType;
}