Modern validation for JavaScript & TypeScript with rule inheritance, structured errors, and framework adapters.
See Pliant in action with our live demos. Try the core vanilla JavaScript example or the Angular integration.
Pure JavaScript validation with no framework dependencies. See the complete API in action.
Seamless Angular Reactive Forms integration with dependency injection support.
Create specialized rules from base rules. Override options, messages, or both without rewriting logic.
Get rich error objects with rule name, actual vs expected values, and full context for debugging.
Use static strings or dynamic functions that receive error details for context-aware messages.
Same validation logic everywhere. Core for vanilla JS, adapters for Angular, React, and more.
Built-in support for async validators. Perfect for server-side checks like username availability.
Zero runtime dependencies. Tree-shakeable ESM builds. Import only what you use.