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url: /reference/TypeAlias.LogOrStringHandler.md
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# Type Alias: LogOrStringHandler

* **Type**: (`level`, `log`) => `void`

## Parameters

### level

`"info"` | `"debug"` | `"warn"` | `"error"`

### log

`string` | [`RolldownLog`](Interface.RolldownLog.md)

## Returns

`void`