The full stack of terminals explained
5 hours ago
- #tui-development
- #cli-architecture
- #terminal-concepts
- The article clarifies key terms: console, terminal, shell, CLI, TTY, PTY, and TUI, explaining their evolution from physical hardware to software concepts.
- It details the technical layers under the hood, including POSIX, the termios structure, line discipline, and terminal modes (canonical, non-canonical, raw).
- The piece covers essential components for TUI development: terminal mode settings, input processing, screen control via ANSI escape sequences, terminal size management, and buffering.
- Practical implementation examples in JavaScript/TypeScript show both high-level (using Node.js's setRawMode) and low-level (direct termios manipulation) approaches to building a TUI app.
- It provides a troubleshooting guide linking common problems (e.g., colors wrong, Ctrl+C not working) to specific layers (terminal, shell, TTY, etc.) for effective debugging.