> ## Documentation Index
> Fetch the complete documentation index at: https://docs.eigenpal.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Combine Data

> Merge multiple objects or concatenate arrays

`transform.combine`, Merge multiple objects or concatenate arrays

## Configuration

Configuration goes inside the step's `with:` block.

<ParamField path="sources" type="array<string>" required>
  Template expressions for sources to combine
</ParamField>

<ParamField path="target" type="string" required>
  Target path in output
</ParamField>

<ParamField path="mode" type="&#x22;merge&#x22; | &#x22;concat&#x22; | &#x22;deep&#x22;" default="merge" />

## Output

Returns `record<string, unknown> | array<unknown>`. Combined result