[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Console](https://evolu.dev/docs/api-reference/common/Console) › ConsoleFormatter

```ts
type ConsoleFormatter = (entry: ConsoleEntry) => ReadonlyArray<unknown>;
```

Defined in: [packages/common/src/Console.ts:255](https://github.com/evoluhq/evolu/blob/ca15b4661c40fedb9f47434497086039cbdea38e/packages/common/src/Console.ts#L255)

Transforms a [ConsoleEntry](https://evolu.dev/docs/api-reference/common/Console/interfaces/ConsoleEntry) before output.

Used by [ConsoleConfig.formatter](https://evolu.dev/docs/api-reference/common/Console/interfaces/ConsoleConfig#formatter) and [ConsoleOutput.write](https://evolu.dev/docs/api-reference/common/Console/interfaces/ConsoleOutput#write). Create
one with [createConsoleFormatter](https://evolu.dev/docs/api-reference/common/Console/functions/createConsoleFormatter).