Typescript Type System

What it does

This skill enables AI agents to work with TypeScript's type system, focusing exclusively on TypeScript language capabilities. It allows for type checking of code without generating output files, utilizing specific configurations and version checks using the tsc (TypeScript Compiler) command. The skill also provides guidance on configuring strict mode options and essential compiler options to ensure robust and type-safe backend development.

When to use it

• When you need to perform type checking of TypeScript code without generating output files for rapid iteration.
• To enforce stricter type safety by applying configurations like strictNullChecks or noImplicitAny.
• When debugging type errors and understanding the nuances of TypeScript's advanced type patterns (union, intersection, discriminated unions).
• For setting up a development environment with watch mode for continuous type checking.
• To generate declaration files (.d.ts) alongside your code.

Key capabilities

• Type checking using tsc --noEmit.
• Configuration of strict mode options within tsconfig.json.
• Version verification of the TypeScript compiler (tsc --version).
• Watch mode for development (tsc --watch).
• Support for advanced type patterns like union, intersection and discriminated unions.
• Generation of declaration files with source maps.

Example prompts

• "Check this TypeScript code for type errors without generating output: [code snippet]"
• "What are the strict mode options I can configure in my tsconfig.json?"
• "Show me an example of a discriminated union type."

Tips & gotchas

• This skill focuses solely on TypeScript language features and does not cover other aspects of backend development.
• Ensure you have TypeScript installed to effectively utilize this skill.
• Familiarity with TypeScript syntax and concepts will enhance your ability to leverage the skill's capabilities.