assertURI()function

assertURI(value: unknown, caller: AnyCaller = assertURI): asserts value is ImmutableURI

Param	Type
`value`	`unknown`	The value to assert. required
`caller`	`AnyCaller`	Function to attribute a thrown error to (defaults to `assertURI` itself). Defaults to `assertURI`

Return
`asserts value is ImmutableURI`

Throws
`RequiredError`	If `value` is not a URI object.

Assert that an unknown value is a URI object.