---
url: /api/@ufo-soft/caelus-cli/interfaces/Io.md
---
# Interface: Io

Defined in: [cli.ts:7](https://github.com/ufo-soft/caelus/blob/31cc32fc3d2008e3b0d484d65d10bba2a91a5897/packages/cli/src/cli.ts#L7)

Where the CLI writes. Defaults to the process streams; tests hand in collectors.

## Methods

### err()

> **err**(`text`): `void`

Defined in: [cli.ts:9](https://github.com/ufo-soft/caelus/blob/31cc32fc3d2008e3b0d484d65d10bba2a91a5897/packages/cli/src/cli.ts#L9)

#### Parameters

##### text

`string`

#### Returns

`void`

***

### out()

> **out**(`text`): `void`

Defined in: [cli.ts:8](https://github.com/ufo-soft/caelus/blob/31cc32fc3d2008e3b0d484d65d10bba2a91a5897/packages/cli/src/cli.ts#L8)

#### Parameters

##### text

`string`

#### Returns

`void`