[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:245](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Console.ts#L245)

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).