Expert TypeScript/JavaScript development guidance. Use when planning or writing TypeScript/JavaScript code, setting up TS/JS projects, configuring build tools (pnpm, Vite, TypeScript), implementing tests (Vitest), adding logging (pino for services, chalk/console for CLIs), working with React/Tailwind/Xstate, or following FP patterns. Covers stack decisions, tooling setup, testing strategies, and logging patterns for both services and CLI tools.
/plugin marketplace add otrebu/agents/plugin install typescript-coding@otrebu-dev-toolsThis skill inherits all available tools. When active, it can use any tool Claude has access to.
LOGGING.mdSTACK.mdTESTING.mdTOOLING.mdExpert TS/JS development guidance across:
Preferred libraries by category:
Setup patterns:
this, new, classes)Vitest patterns:
test.each) vs individual testsApp-specific patterns:
New React app:
pnpm create vite . --template react-ts
Install deps:
pnpm add <package> # regular
pnpm add -D <package> # dev
pnpm add <pkg> --filter @org/target # workspace
ESLint setup:
See ./TOOLING.md#eslint - Never disable rules except no-console for CLI
Tailwind setup: See ./TOOLING.md#tailwind
Monorepo: See ./TOOLING.md#pnpm-workspaces for complete structure
Testing decision:
test.each()Logging:
this, new, prototypes{}, not classesError classesSee @docs/CODING_STYLE.md for universal FP guidelines
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.