@empathyco/x-components/docs/API-reference/api/x-components.mapwire.md

Empathy X Components

<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[Home](./index.md) &gt; [@empathyco/x-components](./x-components.md) &gt; [mapWire](./x-components.mapwire.md)

## mapWire() function

Creates a [Wire](./x-components.wire.md) from other `toWire` wire. It uses `mapFn` to transform the `FromPayload` received to `ToPayload` which `toWire` requires. This is useful to reuse wires in different Events where the payload doesn't fit exactly.

**Signature:**

```typescript
export declare function mapWire<FromPayload, ToPayload>(toWire: Wire<ToPayload>, mapFn: (payload: FromPayload) => ToPayload): Wire<FromPayload>;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

toWire


</td><td>

[Wire](./x-components.wire.md)<!-- -->&lt;ToPayload&gt;


</td><td>

The wire which the new Wire is created from.


</td></tr>
<tr><td>

mapFn


</td><td>

(payload: FromPayload) =&gt; ToPayload


</td><td>

Function to map the payload from `FromPayload` to `ToPayload`<!-- -->.


</td></tr>
</tbody></table>

**Returns:**

[Wire](./x-components.wire.md)<!-- -->&lt;FromPayload&gt;

A new [Wire](./x-components.wire.md)<!-- -->.