TypeScript Type Definitions

Development

TypeScript interface and type definitions for video data structures. Use this when defining types in src/lib/types.ts, creating new interfaces for request/response payloads, or defining prop types for components. Ensures strong typing across the video generation pipeline.

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TypeScript Type Definitions

This Skill provides Claude Code with specific guidance on how it should handle TypeScript types and interfaces.

When to use this skill:

Defining new types or interfaces in src/lib/types.ts
Creating request/response payload types for API endpoints
Defining component prop interfaces
Adding fields to existing interfaces (RenderRequest, RecapBook)
Creating enum or const objects for fixed value sets
Refactoring types for better type safety

Instructions

Centralized Types: Define all shared types in src/lib/types.ts for consistency
Interface Naming: Use descriptive names that indicate purpose (RenderRequest, RecapBook, MonthlyRecapExport)
Strong Typing: Avoid any; use specific types for all function parameters and return values
Required vs Optional: Use ? for optional fields; avoid excessive optionality
Type Exports: Export all public-facing types for use across the codebase
Enum for Constants: Use enums or const objects for fixed sets of values (e.g., AnimationType)
Readonly Where Appropriate: Use readonly for immutable properties in interfaces

Examples:

// Good: Clear types, required fields explicit, exported
export interface RenderRequest {
  month: number; // 1-12
  year: number;
  books: RecapBook[];
  templateId?: string;
}

export interface RecapBook {
  title: string;
  author: string;
  coverUrl: string;
  rating: number;
  cawpileScores: {
    characters: number;
    atmosphere: number;
    writing: number;
    plot: number;
    intrigue: number;
    logic: number;
    enjoyment: number;
  };
}

// Bad: Vague types, everything optional, not exported
interface Request {
  month?: any;
  year?: any;
  data?: any[];
}