Packages

Lightweight async retry utility with exponential backoff, jitter, circuit breaker, and abort controller support.

Beautiful CLI progress bars with multiple styles, ETA calculation, multi-bar support, and color themes.

A tiny, elegant terminal spinner library with 30+ animation frames. Show progress for async operations with customizable text and colors.

A comprehensive color manipulation library supporting HEX, RGB, HSL, HSV, and OKLCH conversions. Includes contrast checking, palette generation, and color blending.

A zero-dependency config loader that reads from .env, JSON, YAML, and TOML files with schema validation, type coercion, and environment overrides.

A lightweight cron expression parser and scheduler. Parse cron strings to human-readable descriptions, validate expressions, and calculate next/previous run times.

Zero-dependency streaming CSV parser with auto-delimiter detection, type coercion, and transform pipes.

Fast deep object/array diff with patch generation, apply, and undo — like JSON Patch but simpler.

Runtime environment variable validation with TypeScript inference, dotenv loading, and schema definition.

A type-safe event emitter with wildcard support, async listeners, middleware pipeline, and memory leak detection.

Drop-in fetch wrapper with automatic retries, timeout, rate limiting, and request deduplication.

Convert durations and timestamps to human-readable strings — '3 hours ago', 'in 2 days', 'about 5 min'.

Structured JSON log prettifier for development — colorized output, timestamp formatting, level filtering.

A Markdown rendering library with syntax highlighting, mermaid diagram support, math equations, and custom container blocks.

A fast, extensible Markdown parser that converts Markdown to HTML or AST. Supports GFM with a plugin system.

A deterministic object hashing library that produces consistent hash strings for JavaScript objects regardless of key order. Useful for caching, deduplication, and change detection.

A flexible rate limiting library supporting fixed window, sliding window, token bucket, and leaky bucket algorithms. Works in-memory or with Redis.

Simple retry utility with exponential backoff, jitter, and configurable retry conditions

Generate realistic fake data from JSON Schema, OpenAPI specs, or TypeScript interfaces.

URL slug generator with transliteration, custom separators, max length, and collision detection.

A lightweight, type-safe finite state machine library for JavaScript/TypeScript. Define states, transitions, guards, and side effects with a fluent API. Zero dependencies.

An in-memory task queue with concurrency control, retries, prioritization, and progress callbacks. Perfect for managing async operations in Node.js and browsers.

A tiny publish-subscribe event system with TypeScript support. Features wildcard subscriptions, once listeners, and namespace events.

A tiny reactive state management library for vanilla JS and frameworks. Subscribe to state changes with selectors, derived state, and persistence.

Auto-generate React form components from Zod validation schemas with error handling