Essential command-line tools and system utilities.
This skill should be used when the user asks to "write typescript", "typescript config", "tsconfig", "type definition", "generics", "utility types", or works with TypeScript language patterns and configuration. Provides comprehensive TypeScript ecosystem patterns and best practices.
Use when gleam's type system including algebraic data types, custom types, pattern matching, generic types, type inference, opaque types, exhaustive checking, and functional error handling for building type-safe Erlang VM applications.
Use when working with TypeScript's type system including strict mode, advanced types, generics, type guards, and compiler configuration.
This skill should be used when working with Rust projects, "Cargo.toml", "rustc", "cargo build/test/run", "clippy", "rustfmt", or Rust language patterns. Provides comprehensive Rust ecosystem patterns and best practices.
This skill should be used when working with Swift projects, "Package.swift", "swift build/test/run", "swiftc", SwiftLint, SwiftFormat, or Swift language patterns. Provides comprehensive Swift ecosystem patterns and best practices for cross-platform CLI and library development.
This skill should be used when the user asks to "write elisp", "emacs config", "init.el", "use-package", ".el file", "emacs lisp", or "magit". Provides comprehensive Emacs ecosystem patterns and best practices. For org-mode, use org-ecosystem skill.
Use when structuring and reusing code with Ansible roles for modular, maintainable automation and configuration management.
Use when configuring Fnox secrets management with fnox.toml. Covers file structure, secrets definition, profiles, and hierarchical configurations.
Use when c systems programming including file I/O, processes, signals, and system calls for low-level system interaction.
Use when writing low-level system software in C requiring file I/O, process management, signals, and system calls.
This skill should be used when the user asks to "write nix", "nix expression", "flake.nix", "home-manager config", "programs.*", "services.*", or works with Nix language, flakes, or Home Manager. Provides comprehensive Nix ecosystem patterns and best practices.
Use when the task requires automating a real browser from the terminal (navigation, form filling, snapshots, screenshots, data extraction, UI-flow debugging) via `playwright-cli` or the bundled wrapper script.
Initialize project specs by scanning codebase for conventions and tech stack
Refactor MoonBit code to be idiomatic: shrink public APIs, convert functions to methods, use pattern matching with views, add loop invariants, and ensure test coverage without regressions. Use when updating MoonBit packages or refactoring MoonBit APIs, modules, or tests.
Best practices and guidelines for esbuild, the ultra-fast JavaScript and TypeScript bundler and minifier
Electron development guidelines for building cross-platform desktop applications with JavaScript/TypeScript
Use this skill whenever the user wants to write, read, understand, debug, or generate Stof (.stof) documents. Stof is a portable data interchange format — JSON + functions — where data carries its own logic. Trigger this skill for: writing .stof files, understanding Stof syntax, converting JSON/YAML/TOML to Stof, designing self-validating configs with schemas, writing prototype types (#[type]), creating workflow pipelines with #[run], embedding logic in data, sending functions over APIs, or any question about Stof fields, functions, attributes, types, unit types, prototypes, schemas, async, imports, or the standard library. Also trigger when the user shows code using `self.`, `#[type]`, `#[main]`, `new X {}`, `schemafy`, prototype type-dispatch syntax, `typename`, or `funcs(attributes = ...)` syntax.
Validate mangled symbols against expected demangled output
Convert HTML/Markdown to PowerPoint presentations using Marp
Guide for syncing with upstream Swift compiler demangling changes
Expert in Vue.js TypeScript development with Vite, Pinia, and modern UI frameworks
