# `nupp.runtime.uuid.spi` Implementation interfaces consumed during ordinary module initialization. Discover with nupp.spi.load; the consumer chooses the unique highest priority. Omitted priority is zero. Importing these declarations loads no implementation. ## Types ### `Provider` _interface_ ```nupp interface Provider ... ``` Canonical lowercase, hyphenated UUID generation. Version 4 provides random UUIDs and version 7 provides time-ordered UUIDs. Version and variant bits must be correct; randomness failures must be reported. #### Members | Name | Kind | Description | | --- | --- | --- | | [`priority`](#nupp.runtime.uuid.spi.Provider.priority) | field | | | [`uuid4`](#nupp.runtime.uuid.spi.Provider.uuid4) | method | Generates a random version 4 UUID. | | [`uuid7`](#nupp.runtime.uuid.spi.Provider.uuid7) | method | Generates a time-ordered version 7 UUID. | #### `priority` _field_ ```nupp priority: integer? ``` `@readonly` #### `uuid4` _method_ ```nupp uuid4: function(): string ``` `@readonly` Generates a random version 4 UUID. ##### Returns | Type | Description | | --- | --- | | `string` | | #### `uuid7` _method_ ```nupp uuid7: function(): string ``` `@readonly` Generates a time-ordered version 7 UUID. ##### Returns | Type | Description | | --- | --- | | `string` | |