assertExpectedFileExtension()
function assertExpectedFileExtension<Expected>(expectedExtension, actualExtension): asserts actualExtension is Expected
Runtime assertion that a file extension is one of the expected values.
Type Parameters
| Type Parameter |
|---|
Expected extends string |
Parameters
| Parameter | Type | Description |
|---|---|---|
expectedExtension | Expected | Iterable<Expected, any, any> | The expected file extension or an iterable of expected file extensions. |
actualExtension | undefined | null | string | The actual file extension, provided during runtime. |
Returns
asserts actualExtension is Expected