TypeScript Pro
Jeffallan/claude-skills
Designs advanced TypeScript types: generics, conditional and mapped types, branded types, discriminated unions and type guards, with tsc checks and tRPC type safety.
A skill your agent uses when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety.
Install Typescript Pro
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install zebbern/claude-code-guide typescript-pro --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/typescript-pro .claude/skills/typescript-pro && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .claude/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-proType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install zebbern/claude-code-guide typescript-pro --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/typescript-pro .agents/skills/typescript-pro && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .agents/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install zebbern/claude-code-guide typescript-pro --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/typescript-pro .cursor/skills/typescript-pro && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .cursor/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/zebbern/claude-code-guide.git --path skills/typescript-pro--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install zebbern/claude-code-guide typescript-pro --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/typescript-pro .gemini/skills/typescript-pro && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .gemini/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install zebbern/claude-code-guide typescript-proInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/typescript-pro .github/skills/typescript-pro && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .github/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add zebbern/claude-code-guide --skill typescript-pro -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install zebbern/claude-code-guide typescript-pro --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zebbern/claude-code-guide.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/typescript-pro .opencode/skills/typescript-pro && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "typescript-pro" agent skill from https://github.com/zebbern/claude-code-guide/tree/main/skills/typescript-pro into .opencode/skills/typescript-pro/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-pro", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
typescript-pro- GitHub stars
- 4.6k
- Token cost
- ~958 tokens
- SKILL.md length
- 358 words
- Files
- 6 (incl. references)
- Skills in repo
- 46
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety.
- Works in 5 steps: Analyze type architecture - Review… → Design type-first APIs - Create branded… → Implement with type safety - Write type… → …
- Building TypeScript applications requiring advanced type systems
- SKILL.md covers Role Definition, When to Use This Skill, Core Workflow and Reference Guide, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Typescript Pro is an agent skill from zebbern/claude-code-guide. Use when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety. Invoke for type guards, utility types, tRPC integration, monorepo setup.
Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `references/advanced-types.md`, `references/configuration.md` and `references/patterns.md`).
It sits in Development, covering Type safety and gRPC and Protobuf. It works with TypeScript and tRPC. The repository describes itself as: Claude Code Guide - Setup, Commands, workflows, agents, skills & tips-n-tricks from beginner to power user! The licence is MIT.
When your agent uses it
- Building TypeScript applications requiring advanced type systems
- Full-stack type safety
Example prompts
- “/typescript-pro”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Analyze type architecture - Review tsconfig, type coverage, build performance
- Design type-first APIs - Create branded types, generics, utility types
- Implement with type safety - Write type guards, discriminated unions, conditional types
- Optimize build - Configure project references, incremental compilation, tree shaking
- Test types - Verify type coverage, test type logic, ensure zero runtime errors
What it can do on your machine
Read from SKILL.md and the folder at commit 4698e3b. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Typescript Pro loads about 958 tokens when it runs, and up to ~12k if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 358 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from zebbern/claude-code-guide at commit 4698e3b, republished under its MIT licence (© zebbern). 358 words, ~958 tokens.
Download SKILL.mdSave it as
.claude/skills/typescript-pro/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.- name
- typescript-pro
- description
- Use when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety. Invoke for type guards, utility types, tRPC integration, monorepo setup.
- license
- MIT
- metadata.author
- https://github.com/Jeffallan
- metadata.version
- 1.0.0
- metadata.domain
- language
- metadata.triggers
- TypeScript, generics, type safety, conditional types, mapped types, tRPC, tsconfig, type guards, discriminated unions
- metadata.role
- specialist
- metadata.scope
- implementation
- metadata.output-format
- code
- metadata.related-skills
- fullstack-guardian, api-designer
TypeScript Pro
Senior TypeScript specialist with deep expertise in advanced type systems, full-stack type safety, and production-grade TypeScript development.
Role Definition
You are a senior TypeScript developer with 10+ years of experience. You specialize in TypeScript 5.0+ advanced type system features, full-stack type safety, and build optimization. You create type-safe APIs with zero runtime type errors.
When to Use This Skill
- Building type-safe full-stack applications
- Implementing advanced generics and conditional types
- Setting up tsconfig and build tooling
- Creating discriminated unions and type guards
- Implementing end-to-end type safety with tRPC
- Optimizing TypeScript compilation and bundle size
Core Workflow
- Analyze type architecture - Review tsconfig, type coverage, build performance
- Design type-first APIs - Create branded types, generics, utility types
- Implement with type safety - Write type guards, discriminated unions, conditional types
- Optimize build - Configure project references, incremental compilation, tree shaking
- Test types - Verify type coverage, test type logic, ensure zero runtime errors
Reference Guide
Load detailed guidance based on context:
| Topic | Reference | Load When |
|---|---|---|
| Advanced Types | references/advanced-types.md | Generics, conditional types, mapped types, template literals |
| Type Guards | references/type-guards.md | Type narrowing, discriminated unions, assertion functions |
| Utility Types | references/utility-types.md | Partial, Pick, Omit, Record, custom utilities |
| Configuration | references/configuration.md | tsconfig options, strict mode, project references |
| Patterns | references/patterns.md | Builder pattern, factory pattern, type-safe APIs |
Constraints
Show full SKILL.md (149 more words)Show less
MUST DO
- Enable strict mode with all compiler flags
- Use type-first API design
- Implement branded types for domain modeling
- Use
satisfiesoperator for type validation - Create discriminated unions for state machines
- Use
Annotatedpattern with type predicates - Generate declaration files for libraries
- Optimize for type inference
MUST NOT DO
- Use explicit
anywithout justification - Skip type coverage for public APIs
- Mix type-only and value imports
- Disable strict null checks
- Use
asassertions without necessity - Ignore compiler performance warnings
- Skip declaration file generation
- Use enums (prefer const objects with
as const)
Output Templates
When implementing TypeScript features, provide:
- Type definitions (interfaces, types, generics)
- Implementation with type guards
- tsconfig configuration if needed
- Brief explanation of type design decisions
Knowledge Reference
TypeScript 5.0+, generics, conditional types, mapped types, template literal types, discriminated unions, type guards, branded types, tRPC, project references, incremental compilation, declaration files, const assertions, satisfies operator
© zebbern, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 5 other files (references) in skills/typescript-pro of zebbern/claude-code-guide.
- SKILL.md
- references/advanced-types.md
- references/configuration.md
- references/patterns.md
- references/type-guards.md
- references/utility-types.md
Open the folder on GitHubat commit 4698e3b
Compare with similar skills
Typescript Pro next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Typescript Pro this skillzebbern/claude-code-guide | 4.6k | — | ~958 | Automated safety check: Pass | MIT | |
| TypeScript ProJeffallan/claude-skills | 12k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Trpcmajiayu000/claude-skill-registry | 666 | 1 repos | ~595 | Automated safety check: Notes | MIT | |
| Implementing API Patternsancoleman/ai-design-components | 526 | 1 repos | ~3k | Automated safety check: Pass | MIT | |
| Trpc Fullstacksickn33/agentic-awesome-skills | 47k | 2 repos | ~3.9k | Automated safety check: Pass | MIT | |
| Olore Trpc Latestolorehq/olore | 103 | — | ~1k | Automated safety check: Pass | MIT |
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Questions about Typescript Pro
What does Typescript Pro do?
A skill your agent uses when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety. Typescript Pro is an agent skill from zebbern/claude-code-guide. Use when building TypeScript applications requiring advanced type systems, generics, or full-stack type safety.
When should I use Typescript Pro?
Typescript Pro fits situations like: building TypeScript applications requiring advanced type systems; full-stack type safety.
How do I install Typescript Pro in Claude Code?
Run `npx skills add zebbern/claude-code-guide --skill typescript-pro -a claude-code`. Or copy the skill folder (skills/typescript-pro in zebbern/claude-code-guide) into .claude/skills/typescript-pro in your project. Claude Code loads it when a task matches its description.
How do I install Typescript Pro in Codex?
Run `npx skills add zebbern/claude-code-guide --skill typescript-pro -a codex`. Or copy the skill folder (skills/typescript-pro in zebbern/claude-code-guide) into .agents/skills/typescript-pro in your project. Codex loads it when a task matches its description.
Can I use Typescript Pro in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add zebbern/claude-code-guide --skill typescript-pro -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/typescript-pro, .gemini/skills/typescript-pro, .github/skills/typescript-pro and .opencode/skills/typescript-pro in your project.
What does Typescript Pro need to run?
SKILL.md names no scripts, command-line tools or credentials: Typescript Pro is instructions for the agent only.
Does Typescript Pro access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Typescript Pro safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Typescript Pro use?
Typescript Pro is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Typescript Pro use?
About 958 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 11k tokens, read only when the agent opens those files.
What are the alternatives to Typescript Pro?
Skills that share tags, products or a category with Typescript Pro: TypeScript Pro (Jeffallan/claude-skills, 12k stars), Trpc (majiayu000/claude-skill-registry, 666 stars), Implementing API Patterns (ancoleman/ai-design-components, 526 stars) and Trpc Fullstack (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Typescript Pro?
zebbern (a GitHub user) maintains it in zebbern/claude-code-guide, which has 4,648 GitHub stars. The repository holds 46 skills in this directory. The repository was last updated on October 7, 2026.
Source: zebbern/claude-code-guide on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.