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skills/type-definitions/SKILL.md

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+# type-definitions
+
+Generate TypeScript interfaces and types from descriptions.
+
+## Activation Keywords
+- "TypeScript", "types", "@interface", "type definition", "interface definition"
+
+## When to Use
+- Creating TypeScript interfaces for data structures
+- Defining function signatures
+- Type-safe API request/response types
+
+## What This Does
+Generates TypeScript/TypeScript-compatible types including:
+- **Interfaces** for data structures
+- **Type aliases** for unions and primitives
+- **Enums** for fixed sets of values
+- **Generic types** for reusable patterns
+- **JSDoc comments** for IDE intellisense
+- **Type guards** for runtime validation
+
+Includes proper typing with optionals, required fields, and readonly modifiers.
+
+## Output
+TypeScript code ready to add to types/ directory
+
+## Example Activation
+User: "Create types for User and LoginRequest"
+Skill: Generates:
+```typescript
+/** User account information */
+export interface User {
+  id: string;
+  email: string;
+  passwordHash: string;
+  createdAt: Date;
+  updatedAt: Date;
+  isActive: boolean;
+}
+
+/** Login request payload */
+export interface LoginRequest {
+  email: string;
+  password: string;
+}
+
+/** Login response payload */
+export interface LoginResponse {
+  token: string;
+  expiresIn: number;
+  user: Omit<User, 'passwordHash'>;
+}
+
+/** Authentication error response */
+export interface AuthError {
+  code: 'INVALID_CREDENTIALS' | 'USER_NOT_FOUND' | 'RATE_LIMITED';
+  message: string;
+  retryAfter?: number;
+}
+```