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1000+ packages found

Another JSON Schema Validator

published version 8.17.1, a year ago13726 dependents licensed under $MIT
605,682,824

Format validation for Ajv v7+

published version 3.0.1, a year ago2262 dependents licensed under $MIT
144,010,595

TypeScript-first schema declaration and validation library with static type inference

published version 3.25.56, 2 days ago29738 dependents licensed under $MIT
129,897,585

Give me a string and I'll tell you if it's a valid npm package license string

published version 3.0.4, 7 years ago1153 dependents licensed under $Apache-2.0
125,290,798

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

published version 3.1.0, 6 months ago915 dependents licensed under $MIT
164,372,548

Check if a protocol requires a certain port number to be added to an URL.

published version 1.0.0, 10 years ago681 dependents licensed under $MIT
131,066,635

Give me a string and I'll tell you if it's a valid npm package name

published version 6.0.1, 3 days ago3000 dependents licensed under $ISC
80,283,878

Type check values

published version 7.0.2, 4 days ago336 dependents licensed under $MIT
99,013,129

Utilities for determining if characters belong to character classes defined by the XML specs.

published version 2.2.0, 6 years ago576 dependents licensed under $MIT
104,866,521

A library for parsing IPv4 and IPv6 IP addresses in node and the browser.

published version 10.0.1, 8 months ago413 dependents licensed under $MIT
86,977,436

An object schema merger/validator

published version 2.1.6, 4 months ago51 dependents licensed under $Apache-2.0
68,245,963

String validation and sanitization

published version 13.15.15, 12 days ago7340 dependents licensed under $MIT
62,445,500

Object schema validation

published version 17.13.3, a year ago13078 dependents licensed under $BSD-3-Clause
50,241,633

Performant, flexible and extensible forms library for React Hooks

published version 7.57.0, 7 days ago6899 dependents licensed under $MIT
50,117,041

Email address and domain validation

published version 5.0.0, 3 years ago18 dependents licensed under $BSD-3-Clause
44,037,139

React Hook Form validation resolvers: Yup, Joi, Superstruct, Zod, Vest, Class Validator, io-ts, Nope, computed-types, TypeBox, arktype, Typanion, Effect-TS and VineJS

published version 5.1.0, a day ago2751 dependents licensed under $MIT
34,364,354

Wrap zod validation errors in user-friendly readable messages

published version 3.4.1, a month ago491 dependents licensed under $MIT
18,588,529

Ajv class for JSON Schema draft-04

published version 1.0.0, 4 years ago85 dependents licensed under $MIT
18,130,951

A fast and easy to use JSON Schema validator

published version 1.5.0, 5 months ago2639 dependents licensed under $MIT
16,501,792

A simple and composable way to validate data in JavaScript (and TypeScript).

published version 2.0.2, a year ago743 dependents licensed under $MIT
10,861,765