drea

Composition-based validation for JavaScript & TypeScript.

A validation rule is still just a function that returns true or false. v4 ships TypeScript types in the box — no @types/drea needed, no separate package to install.

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📚 Table of Contents

• What's New in v4
• Why drea
• Features
• Installation
• Quick Start
• Guard System
• Error Classes
• validateEntry()
• None — Skip Validation
• validateMany()
• Built-in Validators
• URL
• Normalizer
• CustomClassicModel
  • validate()
  • nestvalidate()
  • extend() / remove() / swap()
  • __File — File Validation
• Error Reference
• Changelog

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