TypeScript Types

VerifiedSafe

Define type-safe interfaces, sync with backend, and enforce strict type checking to prevent runtime errors.

Sby Skills Guide Bot
DevelopmentIntermediate
7/25/2026
Claude CodeCursorWindsurfCopilotCodex
#typescript#type-safety#interfaces#api-sync#strict-mode

Recommended for

Automated summary

Defines robust TypeScript interfaces and types, syncs with backend, and enforces strict type checking.

Strengths

  • Increases code robustness with strict types
  • Prevents runtime errors through compile-time validation
  • Improves developer collaboration with centralized types
  • Ensures frontend-backend alignment via code generation

Limitations

  • Can slow down initial development if overly rigid
  • Requires solid TypeScript knowledge for full effectiveness
  • Code generation setup may add complexity
When to use it

Use at the start of a TypeScript project or when adding features that rely on structured data.

When not to use it

Avoid for rapid prototypes or one-off scripts where flexibility outweighs strictness.

Security analysis

Safe
Quality score85/100

This skill provides only static TypeScript guidance with no executable commands or tool invocations. It does not instruct any destructive, exfiltrating, or obfuscated actions, and falls entirely within safe advisory content.

No concerns found

How this analysis is made

Examples

Define interfaces for user data
Create TypeScript interfaces for a user object with id, username, email, and createdAt, and write a React component that displays them.
Sync frontend types with API
Generate TypeScript types from a backend OpenAPI spec for the user endpoint and implement a fetch function with full type safety.
Enable strict mode and type guards
Refactor this code to enable TypeScript strict mode, replace 'any' with proper types, and add runtime validation with Zod.

name: types description: Define type-safe interfaces, sync with backend, and enforce strict checking.

Types Skill

Instructions

  1. Type-safe interfaces

    • Define clear TypeScript interfaces and types for data structures
    • Ensure all props, state, and function parameters are typed
    • Use union and literal types where appropriate
  2. Sync with backend

    • Keep frontend types aligned with backend API responses
    • Use code generation tools (e.g., OpenAPI, Zod, or GraphQL Codegen) when possible
    • Validate incoming API data against expected types
  3. Strict checking

    • Enable TypeScript strict mode
    • Avoid using any or unsafe type assertions
    • Use type guards and runtime validation for dynamic data

Best Practices

  • Keep types centralized and reusable
  • Use enums or union types for fixed sets of values
  • Type errors early to prevent runtime issues
  • Document types for better developer collaboration
  • Combine TypeScript with runtime validators for safety

Example Structure

// Backend response type
interface UserResponse {
  id: string;
  username: string;
  email: string;
  createdAt: string;
}

// Frontend props type
interface UserCardProps {
  user: UserResponse;
}

// Component using typed props
const UserCard: React.FC<UserCardProps> = ({ user }) => {
  return (
    <div className="p-4 border rounded">
      <h2>{user.username}</h2>
      <p>{user.email}</p>
      <small>{new Date(user.createdAt).toLocaleDateString()}</small>
    </div>
  );
};

// Example API fetch with type enforcement
async function fetchUsers(): Promise<UserResponse[]> {
  const res = await fetch("/api/users");
  const data: UserResponse[] = await res.json();
  return data;
}

From the file to a first result

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1. Download the file

Download SKILL.md

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mkdir -p '.skill-downloads/typescript-types-mrzxuqr7' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/typescript-types-mrzxuqr7/download' --output '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md.part' && mv '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md.part' '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md'

2. Check prerequisites

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No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

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3. Load the skill

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Claude Code
test -f '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && test -s '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/types' && cp -R '.skill-downloads/typescript-types-mrzxuqr7' '.claude/skills/types'

Cursor
test -f '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && test -s '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/types' && cp -R '.skill-downloads/typescript-types-mrzxuqr7' '.cursor/skills/types'

Codex
test -f '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && test -s '.skill-downloads/typescript-types-mrzxuqr7/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/types' && cp -R '.skill-downloads/typescript-types-mrzxuqr7' '.agents/skills/types'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/typescript-types-mrzxuqr7'

openskills read 'typescript-types-mrzxuqr7'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

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Read .skill-downloads/typescript-types-mrzxuqr7/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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