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js-utils/docs/api/js-utils.gethead.md

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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) &gt; [@apextoaster/js-utils](./js-utils.md) &gt; [getHead](./js-utils.gethead.md)
## getHead() function
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Get the first element from the specified key within a map of lists.
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<b>Signature:</b>
```typescript
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export declare function getHead<TKey, TVal>(map: Map<TKey, ReadonlyArray<TVal>>, key: TKey): TVal;
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```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
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| map | Map&lt;TKey, ReadonlyArray&lt;TVal&gt;&gt; | |
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| key | TKey | |
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<b>Returns:</b>
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TVal
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