assertURL()function

assertURL(value: unknown, caller: AnyCaller = assertURL): asserts value is ImmutableURL

Param	Type
`value`	`unknown`	Unknown value to test. required
`caller`	`AnyCaller`	Function to attribute a thrown error to — defaults to `assertURL`. Defaults to `assertURL`

Return
`asserts value is ImmutableURL`

Throws
`unknown`	RequiredError If `value` is not a true `scheme://host` URL object.

Assert that an unknown value is a URL object.

Examples

assertURL(value);
value.pathname; // `value` is narrowed to `ImmutableURL`