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.
TypeScript strict mode patterns including schema-first development, branded types, type vs interface guidance, and tsconfig strict flags.
Install Typescript Strict
$ npx skills add citypaul/.dotfiles --skill typescript-strict -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install citypaul/.dotfiles typescript-strict --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/citypaul/.dotfiles.git skills-src && mkdir -p .claude/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .claude/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .claude/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strictType 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 citypaul/.dotfiles --skill typescript-strict -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install citypaul/.dotfiles typescript-strict --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .agents/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .agents/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .agents/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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 citypaul/.dotfiles --skill typescript-strict -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install citypaul/.dotfiles typescript-strict --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .cursor/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .cursor/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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/citypaul/.dotfiles.git --path claude/.claude/skills/typescript-strict--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 citypaul/.dotfiles --skill typescript-strict -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install citypaul/.dotfiles typescript-strict --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .gemini/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .gemini/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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 citypaul/.dotfiles typescript-strictInstalls 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 citypaul/.dotfiles --skill typescript-strict -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .github/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .github/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .github/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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 citypaul/.dotfiles --skill typescript-strict -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install citypaul/.dotfiles typescript-strict --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/claude/.claude/skills/typescript-strict .opencode/skills/typescript-strict && 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-strict" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/typescript-strict into .opencode/skills/typescript-strict/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "typescript-strict", 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-strict- GitHub stars
- 740
- Token cost
- ~2.8k tokens
- SKILL.md length
- 997 words
- Files
- 1
- Skills in repo
- 44
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
TypeScript strict mode patterns including schema-first development, branded types, type vs interface guidance, and tsconfig strict flags.
- Works in 4 steps: Use unknown at untrusted boundaries.… → No type assertions (as Type) without… → Follow the repository's type/interface… → …
- Writing TypeScript code
- SKILL.md covers Core Rules, Type vs Interface, Strict Mode Configuration and Immutability, Pure Functions,…, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Typescript Strict is an agent skill from citypaul/.dotfiles. TypeScript strict mode patterns including schema-first development, branded types, type vs interface guidance, and tsconfig strict flags. Use when writing TypeScript code, defining types or schemas, or reviewing type safety. For immutability and pure function patterns, see the functional skill.
Its SKILL.md is about 2.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Type safety. It works with TypeScript.
When your agent uses it
- Writing TypeScript code
- Reviewing type safety
Example prompts
- “/typescript-strict”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Use unknown at untrusted boundaries. Contain unavoidable any in external declarations or interop shims and explain it
- No type assertions (as Type) without justification
- Follow the repository's type/interface convention. Choose from language semantics when no convention exists
- Derive a value set that already has an owner; never spell it a second time. Before writing a literal union, an enum list, or a ===/||…
What it can do on your machine
Read from SKILL.md and the folder at commit cd4028d. 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 (its code samples are typescript and json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
standardschema.dev
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 Strict loads about 2.8k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 997 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 997 words (~2,758 tokens).
“Type aliases can name unions, intersections, tuples, primitives, mapped types, and object shapes. They cannot be reopened through declaration merging.”
- name
- typescript-strict
Files
Just SKILL.md in claude/.claude/skills/typescript-strict of citypaul/.dotfiles.
Open the folder on GitHubat commit cd4028d
Compare with similar skills
Typescript Strict 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 Strict this skillcitypaul/.dotfiles | 740 | — | ~2.8k | 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 | 56k | — | ~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.
More from citypaul/.dotfiles
All 44 skills in this repoFind Skills
citypaul/.dotfiles
Discover and, with authorization, install agent skills from the open skills ecosystem.
Render Code Shape
citypaul/.dotfiles
Render the shape of code — module boundaries, the types that cross them, signatures, and a cited call graph — for code that already exists or a change about to be built.
Structure Codebase
citypaul/.dotfiles
Design, audit, and evolve physical source and package structures that expose real architectural boundaries while keeping related behavior together.
Test Design Reviewer
citypaul/.dotfiles
Review test quality using Dave Farley's eight properties of good tests.
Characterisation Tests
citypaul/.dotfiles
A skill your agent uses when modifying existing code that lacks tests and you need to document its actual current behavior before making changes -- the legacy code dilemma where you need tests to…
CI Debugging
citypaul/.dotfiles
Systematic CI/CD failure diagnosis using hypothesis-first investigation, local reproduction, and environment delta analysis.
Related
Works with
Categories
Questions about Typescript Strict
What does Typescript Strict do?
TypeScript strict mode patterns including schema-first development, branded types, type vs interface guidance, and tsconfig strict flags. dotfiles. TypeScript strict mode patterns including schema-first development, branded types, type vs interface guidance, and tsconfig strict flags.
When should I use Typescript Strict?
Typescript Strict fits situations like: writing TypeScript code; reviewing type safety.
How do I install Typescript Strict in Claude Code?
Run `npx skills add citypaul/.dotfiles --skill typescript-strict -a claude-code`. Or copy the skill folder (claude/.claude/skills/typescript-strict in citypaul/.dotfiles) into .claude/skills/typescript-strict in your project. Claude Code loads it when a task matches its description.
How do I install Typescript Strict in Codex?
Run `npx skills add citypaul/.dotfiles --skill typescript-strict -a codex`. Or copy the skill folder (claude/.claude/skills/typescript-strict in citypaul/.dotfiles) into .agents/skills/typescript-strict in your project. Codex loads it when a task matches its description.
Can I use Typescript Strict 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 citypaul/.dotfiles --skill typescript-strict -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-strict, .gemini/skills/typescript-strict, .github/skills/typescript-strict and .opencode/skills/typescript-strict in your project.
What does Typescript Strict need to run?
SKILL.md names no scripts, command-line tools or credentials: Typescript Strict is instructions for the agent only.
Does Typescript Strict access the network?
SKILL.md names 1 domain. As links in the text: standardschema.dev. This is read from the text; nothing was executed.
Is Typescript Strict 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 Strict use?
Typescript Strict 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 Strict use?
About 2.8k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Typescript Strict?
Skills that share tags, products or a category with Typescript Strict: Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars), Wagmi Feature Development (wevm/wagmi, 6.8k stars), Convert Internal Package to TypeScript (TryGhost/Ghost, 56k 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 Strict?
citypaul (a GitHub user) maintains it in citypaul/.dotfiles, which has 740 GitHub stars. The repository holds 44 skills in this directory. The repository was last updated on October 9, 2026.
Source: citypaul/.dotfiles on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.