code-shelf

A small, growing collection of React hooks and TypeScript utilities gathered from recurring frontend problems.

This is a reference shelf rather than a published package: each item is kept independent so it can be read, adapted and copied without bringing in the entire repository.

What's inside

React hooks

• useAbortController — manage cancellable async operations
• useDebounce — delay frequently changing values
• useLocalStorage — keep React state in sync with localStorage
• useMediaQuery — respond to CSS media queries in React
• usePrevious — retain the previous value between renders

Utilities

• currency-helpers — resolve and format currencies with Intl.NumberFormat
• date-helpers — compare and format dates with Day.js
• string-helpers — format, normalize and sanitize strings and numbers
• validation-helpers — small format and identity validation helpers
• cipher — encryption and decryption helpers

Individual hooks include their own API notes and usage examples. Utility files are documented alongside the implementation.

Notes

• Written in TypeScript, with React used where a hook requires it.
• Some utilities depend on libraries such as Day.js; check the imports before copying.
• The examples are intended to be adapted to the needs and conventions of the project using them.