PliantModern Validation Library

Framework-agnostic validation with structured errors, rule inheritance, and TypeScript-first design

🎯

Framework Agnostic

Use @pliant/core anywhere - Node.js, browsers, React, Vue, Svelte. Add @pliant/angular for seamless Angular integration.

📦

Every validation error includes a code, message, and contextual details. Perfect for i18n and custom error handling.

🔗

Create specialized rules that extend existing ones. Build "usernameLength" from "length" with custom options and messages.

⚡

Ships with required, email, numeric, length, minLength, maxLength, range, min, max, regex, and equals rules.

🔌

Create custom sync or async rules with full TypeScript support. Rules are pure functions - easy to test and compose.

💬

Define messages as static strings or dynamic functions. Supports template literals with error details for rich messages.