Javascript Typescript

The javascript-typescript skill equips AI agents with the ability to write, debug, and refactor code using both JavaScript and TypeScript. It enables agents to handle dynamic typing for rapid prototyping while leveraging static type checking for robust production applications.

When to use it

• Building new backend services or APIs that require strict data validation and type safety.
• Refactoring existing legacy JavaScript codebases to improve maintainability and reduce runtime errors.
• Generating unit tests with specific type assertions to ensure code correctness across different environments.
• Creating utility libraries where consistent typing is essential for seamless integration with other typed modules.

Key capabilities

• Syntax generation for both JavaScript (ES6+) and TypeScript features like interfaces, generics, and unions.
• Automatic detection and correction of common type mismatches and runtime errors.
• Conversion between dynamic JavaScript objects and strongly-typed TypeScript structures.
• Implementation of modern module systems such as ES modules and CommonJS within the agent's output.

Example prompts

• "Create a Node.js API endpoint using Express with full TypeScript typing for request and response bodies."
• "Refactor this untyped JavaScript function into a typed TypeScript version with proper error handling."
• "Write a utility function to validate user input against a specific schema using TypeScript interfaces."

Tips & gotchas

Ensure your development environment supports the target TypeScript version before requesting code generation, as syntax may vary. While the skill handles both languages, specify if you need strict mode enforcement or relaxed typing for legacy compatibility.