77 lines
2.2 KiB
Plaintext
77 lines
2.2 KiB
Plaintext
# supports-color [](https://travis-ci.org/chalk/supports-color)
|
|
|
|
> Detect whether a terminal supports color
|
|
|
|
|
|
## Install
|
|
|
|
```
|
|
$ npm install supports-color
|
|
```
|
|
|
|
|
|
## Usage
|
|
|
|
```js
|
|
const supportsColor = require('supports-color');
|
|
|
|
if (supportsColor.stdout) {
|
|
console.log('Terminal stdout supports color');
|
|
}
|
|
|
|
if (supportsColor.stdout.has256) {
|
|
console.log('Terminal stdout supports 256 colors');
|
|
}
|
|
|
|
if (supportsColor.stderr.has16m) {
|
|
console.log('Terminal stderr supports 16 million colors (truecolor)');
|
|
}
|
|
```
|
|
|
|
|
|
## API
|
|
|
|
Returns an `Object` with a `stdout` and `stderr` property for testing either streams. Each property is an `Object`, or `false` if color is not supported.
|
|
|
|
The `stdout`/`stderr` objects specifies a level of support for color through a `.level` property and a corresponding flag:
|
|
|
|
- `.level = 1` and `.hasBasic = true`: Basic color support (16 colors)
|
|
- `.level = 2` and `.has256 = true`: 256 color support
|
|
- `.level = 3` and `.has16m = true`: Truecolor support (16 million colors)
|
|
|
|
|
|
## Info
|
|
|
|
It obeys the `--color` and `--no-color` CLI flags.
|
|
|
|
For situations where using `--color` is not possible, use the environment variable `FORCE_COLOR=1` (level 1), `FORCE_COLOR=2` (level 2), or `FORCE_COLOR=3` (level 3) to forcefully enable color, or `FORCE_COLOR=0` to forcefully disable. The use of `FORCE_COLOR` overrides all other color support checks.
|
|
|
|
Explicit 256/Truecolor mode can be enabled using the `--color=256` and `--color=16m` flags, respectively.
|
|
|
|
|
|
## Related
|
|
|
|
- [supports-color-cli](https://github.com/chalk/supports-color-cli) - CLI for this module
|
|
- [chalk](https://github.com/chalk/chalk) - Terminal string styling done right
|
|
|
|
|
|
## Maintainers
|
|
|
|
- [Sindre Sorhus](https://github.com/sindresorhus)
|
|
- [Josh Junon](https://github.com/qix-)
|
|
|
|
|
|
---
|
|
|
|
<div align="center">
|
|
<b>
|
|
<a href="https://tidelift.com/subscription/pkg/npm-supports-color?utm_source=npm-supports-color&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
|
|
</b>
|
|
<br>
|
|
<sub>
|
|
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
|
|
</sub>
|
|
</div>
|
|
|
|
---
|