@kaynooo/utils

A comprehensive TypeScript utility library with type-safe builders, decorators, and helper functions for modern web development.

Features

• 🎯 Type-safe - Full TypeScript support with strict typing
• 🏗️ Builder patterns - Configurable loggers, endpoints, and i18n systems
• 🎨 Color utilities - Advanced color conversion and manipulation
• 📝 Text processing - Case conversion, formatting, and validation
• ⚡ Performance - Memoization decorators with TTL and cache invalidation
• 🌍 Internationalization - Type-safe i18n with dot notation keys
• 🔧 Validation - Comprehensive rule-based validation system

Installation

# bun (recommended)
bun add @kaynooo/utils
# pnpm
pnpm add @kaynooo/utils
# yarn
yarn add @kaynooo/utils
# npm
npm install @kaynooo/utils
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Quick Start

import { ColorConverter, declareI18n, declareLogger, Memoize } from '@kaynooo/utils'

// Type-safe logging
const logger = declareLogger({ logLevel: 2 })
logger('success', 'Application started')

// Color conversion
const hslColor = ColorConverter.from('hex', '#f0af02').to('hsl')

// Memoization with automatic cache invalidation
class DataService {
  @Memoize({ ttl: 5000 })
  get expensiveData() {
    return fetchDataFromAPI()
  }
}
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Core Modules

🏗️ Builder Patterns

Create configured instances with fluent APIs:

• Logger Builder - Custom loggers with levels, colors, and formatting
• Endpoint Builder - Type-safe API endpoint declarations
• i18n Builder - Internationalization with variable interpolation
• Permission Builder - Role-based access control systems

🎨 Color & Design

• ColorConverter - Convert between hex, RGB, HSL, and more
• Color utilities - Manipulation, validation, and generation
• Text formatting - Case conversion (camelCase, kebab-case, etc.)

⚡ Performance & Caching

• @Memoize decorator - Method result caching with TTL
• Cache invalidation - Smart cache clearing based on property changes
• Timing utilities - Delays, intervals, and performance measurement

🔧 Validation & Rules

• Rule engine - Composable validation rules
• Built-in validators - Email, URL, phone, date ranges, and more
• Custom rules - Easy to extend with your own validation logic

🌍 Internationalization

Type-safe translations with dot notation keys:

const { t } = declareI18n({
  en: { user: { profile: 'Profile of {username}' } },
  fr: { user: { profile: 'Profil de {username}' } }
})

// Full type safety - TypeScript will error on invalid keys/variables
t('en', 'user.profile', { username: 'John' }) // ✅
t('en', 'invalid.key') // ❌ TypeScript error
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Examples

Check out the examples/ directory for comprehensive usage examples of each utility.

Documentation

Full API documentation is available at: https://kayno0o.github.io/utils/docs/

Development

# Install dependencies
bun install

# Run tests
bun test

# Build the library
bun run build

# Generate documentation
bun run doc
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License

MIT © Kaynooo