package membership

import (
	"crypto/rand"

	"github.com/oklog/ulid/v2"
)

// newULID returns a fresh, lexicographically-sortable unique id used for room
// ids. It uses crypto/rand entropy so ids are unguessable and collision-free.
func newULID() string {
	return ulid.MustNew(ulid.Now(), rand.Reader).String()
}