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6000 packages found
Another JSON Schema Validator
TypeScript-first schema declaration and validation library with static type inference
String validation and sanitization
Give me a string and I'll tell you if it's a valid npm package name
Format validation for Ajv v7+
A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations
Performant, flexible and extensible forms library for React Hooks
Check if a protocol requires a certain port number to be added to an URL.
Give me a string and I'll tell you if it's a valid npm package license string
A library for parsing IPv4 and IPv6 IP addresses in node and the browser.
Utilities for determining if characters belong to character classes defined by the XML specs.
An object schema merger/validator
Generic configuration validation tool that helps you with warnings, errors and deprecation messages as well as showing users examples of correct configuration.
A fast and easy to use JSON Schema validator
Decorator-based property validation for classes.
Error constructor for test and validation frameworks that implements standardized AssertionError specification.