typescript

TypeScript operations - check types, fix errors, or extract/refactor types

Auditing and updating npm dependencies to prevent security vulnerabilities in TypeScript projects

Avoid angle-bracket type assertions (<Type>) and use 'as Type' syntax instead

Teaches when and how to use unknown instead of any type in TypeScript. Use when working with TypeScript code that has any types, needs type safety, handling external data, or when designing APIs. Critical for preventing type safety violations.

Avoid non-null assertion operator (!) and use type-safe alternatives instead

Analyze TypeScript errors and provide detailed diagnostics with root cause analysis and specific fix recommendations

CRITICAL security skill teaching proper credential and password handling. NEVER store passwords, use bcrypt/argon2, NEVER accept third-party credentials. Use when handling authentication, passwords, API keys, or any sensitive credentials.

Refactor inline types into reusable, well-organized type definitions using interfaces, type aliases, and generics

Resolve all TypeScript errors using root cause analysis, targeted fixes, and mandatory validation

Code review skill that checks TypeScript type safety, exported for use by cross-cutting review plugin

Sanitizing and validating user input to prevent XSS, injection attacks, and security vulnerabilities in TypeScript applications

Teaches generic constraints, avoiding any in generic defaults, and mapped types in TypeScript. Use when creating reusable functions, components, or types that work with multiple types while maintaining type safety.

Teaches how to validate external data at runtime using Zod and other validation libraries in TypeScript. Use when working with APIs, JSON parsing, user input, or any external data source where runtime validation is needed.

Teaches how to write custom type guards with type predicates and use built-in type narrowing in TypeScript. Use when working with unknown types, union types, validating external data, or implementing type-safe runtime checks.

Validating external data from APIs, JSON parsing, user input, and any untrusted sources in TypeScript applications

Teaches when type assertions are safe versus dangerous in TypeScript. Use when considering using 'as' keyword, type casting, or when working with external data that might use assertions instead of proper validation.

4 hooks across 3 events