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Structural Typing

Checked
marius-townhouse·vlatest·backend

This skill generates TypeScript code based on a provided JSON schema, streamlining type definitions and improving code maintainability.

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 structural-typing -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/structural-typing/SKILL.md
Scanned
1 file, 231 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 enables AI agents to understand and apply structural typing in TypeScript. It allows the agent to reason about object compatibility based on their shape (properties and methods) rather than explicit type declarations. This facilitates more flexible code generation and analysis, particularly when dealing with complex or evolving data structures.

When to use it

  • Generating TypeScript code: When you need an AI to write TypeScript that works with objects whose types aren't precisely known beforehand.
  • Analyzing existing TypeScript code: To determine if two objects are compatible for assignment or function arguments, even without explicit type annotations.
  • Refactoring TypeScript codebases: When migrating from traditional nominal typing to a more flexible structural approach.
  • Understanding complex type relationships: To reason about how different types interact based on their properties and methods.

Key capabilities

  • Type compatibility inference
  • Structural subtype checking
  • Reasoning about object shapes
  • Flexible code generation

Example prompts

  • "Can this object { name: string, age: number } be assigned to a variable of type interface Person { name: string }?"
  • "Generate TypeScript code for a function that accepts any object with a 'calculateTotal' method."
  • "Explain how structural typing differs from nominal typing in TypeScript."

Tips & gotchas

This skill requires a basic understanding of TypeScript and its type system. While structural typing offers flexibility, it can also lead to unexpected behavior if not carefully considered; ensure the agent understands the implications of implicit type compatibility.