}

// NewServeMux allocates and returns a new [ServeMux].
func NewServeMux() *ServeMux {
	return &ServeMux{}
}

// DefaultServeMux is the default [ServeMux] used by [Serve].
var DefaultServeMux = &defaultServeMux

var defaultServeMux ServeMux

// cleanPath returns the canonical path for p, eliminating . and .. elements.
func cleanPath(p string) string {
	if p == "" {
		return "/"