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Types As Sets

Checked
marius-townhouse·vlatest·backend

This skill converts data types into set representations for efficient comparison and analysis of distinct values.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add marius-townhouse/effective-typescript-skills --skill types-as-sets -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

marius-townhouse

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned marius-townhouse/effective-typescript-skills at d754db2077.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
d754db2077
Manifest
skills/types-as-sets/SKILL.md
Scanned
1 file, 218 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill allows you to treat TypeScript types as sets, enabling operations like intersection, union, difference, and subset checking. It provides a powerful way to reason about and manipulate type relationships programmatically within your AI agent's code. This capability can be used for advanced type analysis, refactoring, or generating type-safe configurations.

When to use it

  • Type Conflict Resolution: Identify conflicting types in complex systems by performing set difference operations.
  • Configuration Generation: Generate valid configuration options based on the intersection of required and available types.
  • Code Refactoring: Determine if a refactor introduces incompatible type changes using subset checking.
  • Advanced Type Analysis: Analyze dependencies between different parts of your codebase by representing them as sets of types.

Key capabilities

  • Type Intersection (A ∩ B)
  • Type Union (A ∪ B)
  • Type Difference (A - B)
  • Subset Checking (A ⊆ B)

Example prompts

  • "What is the intersection of string and number?"
  • "Calculate the difference between string | number and boolean."
  • "Is [1, 2] a subset of [1, 2, 3]?"

Tips & gotchas

This skill requires a solid understanding of TypeScript types. The results can be complex; carefully review the output to ensure it aligns with your intended type relationships.