writeStream.hasColors([count][, env])

• count <integer> 请求的颜色数量（最小为 2）。默认值：16.

  ¥count <integer> The number of colors that are requested (minimum 2). Default: 16.

• env <Object> 包含要检查的环境变量的对象。这使得模拟特定终端的使用成为可能。默认值：process.env。

  ¥env <Object> An object containing the environment variables to check. This enables simulating the usage of a specific terminal. Default: process.env.

• 返回：<boolean>

  ¥Returns: <boolean>

如果 writeStream 支持的颜色至少与 count 中提供的颜色一样多，则返回 true。最小支持为 2（黑色和白色）。

¥Returns true if the writeStream supports at least as many colors as provided in count. Minimum support is 2 (black and white).

这具有与 writeStream.getColorDepth() 中描述的相同的误报和漏报。

¥This has the same false positives and negatives as described in writeStream.getColorDepth().

process.stdout.hasColors();
// Returns true or false depending on if `stdout` supports at least 16 colors.
process.stdout.hasColors(256);
// Returns true or false depending on if `stdout` supports at least 256 colors.
process.stdout.hasColors({ TMUX: '1' });
// Returns true.
process.stdout.hasColors(2 ** 24, { TMUX: '1' });
// Returns false (the environment setting pretends to support 2 ** 8 colors). 拷贝