stream.getDefaultHighWaterMark(objectMode)
返回流使用的默认 highWaterMark。objectMode 的默认值是 16。对于字节流,在非 Windows 平台上默认是 65536(64 KiB),在 Windows 上默认是 16384(16 KiB)。
🌐 Returns the default highWaterMark used by streams. Defaults to 16 for
objectMode. For byte streams, it defaults to 65536 (64 KiB) on non-Windows
platforms and 16384 (16 KiB) on Windows.