# useColor

**Kind:** Function

**Source:** [`lib/command.js`](https://github.com/tj/commander.js/blob/main/lib/command.js#L2768)

Exported for using from tests, not otherwise used outside this file.

`useColor` is a helper exported from `lib/command.js` for test code. It exposes the command module's color-selection behavior without being used elsewhere outside that file.

## Diagram

```mermaid
graph LR
  Environment[Runtime environment] --> UseColor[useColor]
  UseColor --> ColorDecision[Color decision]
  ColorDecision --> Tests[Test assertions]
```

## Usage

```js
import { useColor } from './lib/command.js';

const colorEnabled = useColor();

if (colorEnabled) {
  console.log('Color output is enabled');
}
```

## AI Coding Instructions

- Keep `useColor` exported so tests can access the same color behavior as `lib/command.js`.
- Test color-related behavior through `useColor` rather than duplicating its decision logic in test files.
- Avoid adding production call sites outside `lib/command.js` unless the module boundary is intentionally changed.
- Account for runtime environment settings that may affect whether color output is enabled.