This is a Go library for console and terminal handling, part of the containerd project. It provides a cross-platform `Console` interface with methods for setting raw mode, resizing, disabling echo, and querying window size. The library supports Linux, macOS, FreeBSD, NetBSD, OpenBSD, Windows, and z/OS via build tags. On Linux, it includes an `Epoller` that uses edge-triggered epoll for efficient non-blocking I/O, handling EAGAIN/EIO errors gracefully. It can create PTY pairs (`NewPty`) and obtain the current process console (`Current`). The only external dependency is `golang.org/x/sys`. The code is idiomatic, well-tested, and follows Go best practices, though the dependency version and CI Go version are outdated.