2020-03-29 13:43:52 +00:00
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[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [isNil](./js-utils.isnil.md)
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## isNil() function
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2020-03-31 02:31:51 +00:00
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Check if a value is nil.
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2020-03-29 13:43:52 +00:00
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<b>Signature:</b>
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```typescript
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export declare function isNil<T>(val: Optional<T>): val is Nil;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| val | <code>Optional<T></code> | |
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<b>Returns:</b>
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`val is Nil`
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