26 lines
736 B
Markdown
26 lines
736 B
Markdown
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [mergeMap](./js-utils.mergemap.md)
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## mergeMap() function
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Merge the `source` map into the `target` map, replacing keys that already exist.
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<b>Signature:</b>
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```typescript
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export declare function mergeMap<TKey, TVal>(target: Map<TKey, TVal>, source: Map<TKey, TVal> | Array<[TKey, TVal]>): Map<TKey, TVal>;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| target | <code>Map<TKey, TVal></code> | |
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| source | <code>Map<TKey, TVal> | Array<[TKey, TVal]></code> | |
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<b>Returns:</b>
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`Map<TKey, TVal>`
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