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react-typescript

Type React components and hooks with TypeScript patterns. Use when typing React props, hooks, event handlers, or component generics in TypeScript.

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  • SKILL.md2.1 KB
  • evals/evals.json2.4 KB
  • references/example.md1.3 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

React TypeScript

Priority: P1 (HIGH)

Implementation Guidelines

  • Components: Prefer interface/type (Props) over React.FC (which implicit children). Use JSX.Element or ReactNode as return type.
  • Children: For components that accept children, use PropsWithChildren<T> or explicitly type them as React.ReactNode.
  • Events: Always type event handlers using specific React events, such as React.ChangeEvent<HTMLInputElement> or React.FormEvent<HTMLFormElement>.
  • Hooks: For useRef, avoid any; use useRef<HTMLDivElement>(null). For useState, use generics for complex types: useState<User | null>(null).
  • Native Elements: Use ComponentPropsWithoutRef<'button'> or ComponentPropsWithRef to extend native attributes safely.
  • Generics: Implement generic components for reusable UI like lists using <T,>(props: ListProps<T>).
  • Discriminated Unions: Use Discriminated Unions for mutually exclusive props (e.g., success vs error states).
  • Utility Types: Leverage Omit, Pick, and Partial to transform prop interfaces and avoid redundancy.

Anti-Patterns

  • No any: Use unknown.
  • No React.FC: Implicit children deprecated/bad practice.
  • No Function: Use (args: T) => void.

References

See references/example.md for typed props, generic components, and hook ref patterns.

Canonical response anchors

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:

  • generic

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