# `nupp.uuid` UUID generation using the implementation retained when this module loads. UUIDs are lowercase, hyphenated strings. Setup selects the canonical uuid service before requiring this module. The built-in default uses the native or browser host. ## Values ### `v4` _variable_ ```nupp const v4 ``` Generates a random version 4 UUID. #### Raises - when the system cannot supply randomness ### `v7` _variable_ ```nupp const v7 ``` Generates a time-ordered version 7 UUID. #### Raises - when the system cannot supply randomness