Typescript Advanced Types
rolling-scopes/rsschool-app
Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications.
Apply project conventions for TypeScript types, imports, generics, factories, and runtime schemas.
Install Typescript
$ npx skills add EpicenterHQ/epicenter --skill typescript -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install EpicenterHQ/epicenter typescript --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/EpicenterHQ/epicenter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/typescript .claude/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .claude/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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/EpicenterHQ/epicenter/tree/main/.agents/skills/typescriptType 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 EpicenterHQ/epicenter --skill typescript -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install EpicenterHQ/epicenter typescript --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/typescript .agents/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .agents/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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 EpicenterHQ/epicenter --skill typescript -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install EpicenterHQ/epicenter typescript --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/typescript .cursor/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .cursor/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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/EpicenterHQ/epicenter.git --path .agents/skills/typescript--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 EpicenterHQ/epicenter --skill typescript -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install EpicenterHQ/epicenter typescript --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/typescript .gemini/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .gemini/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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 EpicenterHQ/epicenter typescriptInstalls 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 EpicenterHQ/epicenter --skill typescript -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/typescript .github/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .github/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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 EpicenterHQ/epicenter --skill typescript -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install EpicenterHQ/epicenter typescript --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/typescript .opencode/skills/typescript && 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" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/typescript into .opencode/skills/typescript/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript", 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- GitHub stars
- 4.8k
- Token cost
- ~2.2k tokens
- SKILL.md length
- 1,114 words
- Files
- 8 (incl. references)
- Skills in repo
- 65
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Apply project conventions for TypeScript types, imports, generics, factories, and runtime schemas.
- Editing .ts files
- SKILL.md covers Core Rules, Go-to-Definition Awareness and Reference Map
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Reviewing TypeScript design and tests
What it does
Typescript is an agent skill from EpicenterHQ/epicenter. Apply project conventions for TypeScript types, imports, generics, factories, and runtime schemas. Use when editing .ts files or reviewing TypeScript design and tests.
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including reference files (for example `references/advanced-typescript-features.md`, `references/factory-patterns.md` and `references/project-conventions.md`).
It sits in Development, covering Type safety. It works with TypeScript. The repository describes itself as: Open-source, local-first apps.
When your agent uses it
- Editing .ts files
- Reviewing TypeScript design and tests
Example prompts
- “/typescript”
What it can do on your machine
Read from SKILL.md and the folder at commit 9cc65c3. 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 loads about 2.2k tokens when it runs, and up to ~18k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 1,114 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,114 words (~2,171 tokens).
“Project-wide TypeScript conventions compose with narrower skills such as arktype, typebox, testing, and method-shorthand-jsdoc.”
- name
- typescript
- metadata.author
- epicenter
- metadata.version
- 2.0
Files
SKILL.md and 7 other files (references) in .agents/skills/typescript of EpicenterHQ/epicenter.
- SKILL.md
- references/advanced-typescript-features.md
- references/factory-patterns.md
- references/project-conventions.md
- references/runtime-schema-patterns.md
- references/testing-patterns.md
- references/type-organization.md
- references/type-safety-and-control-flow.md
Open the folder on GitHubat commit 9cc65c3
Compare with similar skills
Typescript 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 this skillEpicenterHQ/epicenter | 4.8k | — | ~2.2k | Automated safety check: Pass | Custom licence | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| Wagmi Feature Developmentwevm/wagmi | 6.8k | — | ~3.8k | Automated safety check: Pass | MIT | |
| Convert Internal Package to TypeScriptTryGhost/Ghost | 55k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Add NodeBridge Handlerneovateai/neovate-code | 1.6k | — | ~1k | Automated safety check: Pass | MIT | |
| AST Visitor Pattern for Unionsprisma/orm | 48k | — | ~830 | Automated safety check: Pass | Apache-2.0 |
Similar skills
Wagmi Feature Development
wevm/wagmi
Walks through adding a Wagmi feature across its layers: a Viem-based core action, TanStack Query options, and React and Vue bindings.
Convert Internal Package to TypeScript
TryGhost/Ghost
Moves a legacy internal Ghost package from JavaScript and CommonJS to TypeScript and ESM in three focused commits that keep git file history intact.
Add NodeBridge Handler
neovateai/neovate-code
Walks through adding a message handler to NodeBridge in Neovate Code, from the implementation and its types to an optional test entry and a run with Bun.
- Official
AST Visitor Pattern for Unions
prisma/orm
Replaces a plain TypeScript union plus switch statements with frozen subclasses and a visitor interface when several places dispatch on the same variants.
Bumpy Add Change
zap-studio/monorepo
Create a bumpy bump file describing which packages changed and how, for version bumping and changelog generation.
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Related
Works with
Categories
Questions about Typescript
What does Typescript do?
Apply project conventions for TypeScript types, imports, generics, factories, and runtime schemas. Typescript is an agent skill from EpicenterHQ/epicenter. Apply project conventions for TypeScript types, imports, generics, factories, and runtime schemas.
When should I use Typescript?
Typescript fits situations like: editing .ts files; reviewing TypeScript design and tests.
How do I install Typescript in Claude Code?
Run `npx skills add EpicenterHQ/epicenter --skill typescript -a claude-code`. Or copy the skill folder (.agents/skills/typescript in EpicenterHQ/epicenter) into .claude/skills/typescript in your project. Claude Code loads it when a task matches its description.
How do I install Typescript in Codex?
Run `npx skills add EpicenterHQ/epicenter --skill typescript -a codex`. Or copy the skill folder (.agents/skills/typescript in EpicenterHQ/epicenter) into .agents/skills/typescript in your project. Codex loads it when a task matches its description.
Can I use Typescript 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 EpicenterHQ/epicenter --skill typescript -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, .gemini/skills/typescript, .github/skills/typescript and .opencode/skills/typescript in your project.
What does Typescript need to run?
SKILL.md names no scripts, command-line tools or credentials: Typescript is instructions for the agent only.
Does Typescript 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 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 use?
Typescript has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Typescript use?
About 2.2k tokens (SKILL.md is roughly 8.7k 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 16k tokens, read only when the agent opens those files.
What are the alternatives to Typescript?
Skills that share tags, products or a category with Typescript: Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars), Wagmi Feature Development (wevm/wagmi, 6.8k stars), Convert Internal Package to TypeScript (TryGhost/Ghost, 55k stars) and Add NodeBridge Handler (neovateai/neovate-code, 1.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Typescript?
EpicenterHQ (a GitHub organization) maintains it in EpicenterHQ/epicenter, which has 4,819 GitHub stars. The repository holds 65 skills in this directory. The repository was last updated on October 8, 2026.
Source: EpicenterHQ/epicenter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.