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Optique: type-safe combinatorial CLI parser for TypeScript

Type-safe combinatorial CLI parser for TypeScript

For agents: Documentation for Optique, a type-safe combinatorial CLI parser library for TypeScript, with installation, tutorial and cookbook guides.

typescript clicommand line parserparser combinatorstype-safe clitypescript library

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# Optique: type-safe combinatorial CLI parser for TypeScript

> Type-safe combinatorial CLI parser for TypeScript

## Table of Contents

### Guide

- [Why Optique?](/why.md): Discover how Optique brings functional composition to TypeScript CLI development, enabling truly reusable parser components that other libraries can't match through configuration-based approaches.
- [Installation](/install.md): Instructions for installing Optique.
- [Optique tutorial: Build type-safe CLIs step by step](/tutorial.md): This tutorial walks you through building type-safe command-line applications using Optique's parser combinators, starting from simple options to complex subcommands.
- [CLI patterns cookbook](/cookbook.md): Practical recipes for common command-line interface patterns using Optique: subcommands, dependent options, mutually exclusive flags, key–value pairs, and more complex CLI designs with detailed explanations.
- [Common pitfalls](/pitfalls.md)

### Concepts

- [Primitive parsers](/concepts/primitives.md): Primitive parsers are the foundational building blocks that handle basic CLI elements like options, arguments, commands, and constants with full type safety and clear error messages.
- [Value parsers](/concepts/valueparsers.md): Value parsers convert string arguments into strongly-typed values with validation, supporting built-in types like integers, URLs, and UUIDs, plus custom parser creation.
- [Modifying combinators](/concepts/modifiers.md): Modifying combinators enhance existing parsers by making them optional, providing defaults, transforming results, or allowing multiple occurrences while preserving type safety.
- [Construct combinators](/concepts/constructs.md): Construct combinators compose multiple parsers into complex structures using object(), tuple(), seq(), or(), and merge() to build sophisticated CLI interfaces with full type inference.
- [Inter-option dependencies](/concepts/dependencies.md): Inter-option dependencies allow one option's valid values to depend on another option's value, enabling dynamic validation and context-aware shell completion.
- [Derived defaults](/concepts/derived-defaults.md): Compute default values from the first-pass parse result while keeping CLI arguments as the highest-priority source.
- [Shell completion](/concepts/completion.md): Learn how to add shell completion support to your CLI applications using Optique's built-in completion system. Covers Bash, zsh, fish, PowerShell, and Nushell integration, custom suggestions, and native file completion.
- [Man pages](/concepts/man.md): Learn how to generate Unix man pages from your CLI application using Optique's man page generator. Covers man page format, customization options, and integration patterns.
- [Command discovery](/concepts/discover.md): Build command-oriented CLI applications by discovering Optique command modules from the file system and dispatching to command handlers.
- [Structured messages](/concepts/messages.md): Structured messages prov
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