Security News
The Hidden Blast Radius of the Axios Compromise
The Axios compromise shows how time-dependent dependency resolution makes exposure harder to detect and contain.
By Ahmad Nassri - Apr 01, 2026
New Research: Supply Chain Attack on Axios Pulls Malicious Dependency from npm.Details → →
joi
The most powerful schema description language and data validator for JavaScript.
Installation
npm install joi
Visit the joi.dev Developer Portal for tutorials, documentation, and support
Useful resources
Other packages similar to joi
yup
Yup is a JavaScript schema builder for value parsing and validation. It is similar to Joi but is leaner and designed for browser usage as well as Node.js. It uses a similar API to Joi but is built with a different focus on client-side validation.
ajv
Ajv (Another JSON Schema Validator) is a fast JSON schema validator supporting JSON Schema draft-06/07/2019-09/2020-12 and JSON Type Definition (RFC 8927). It is different from Joi in that it uses a JSON-based schema definition rather than a fluent API.
validator
Validator is a library of string validators and sanitizers. It is not a schema-based validation library like Joi but provides a set of string validation functions that can be used individually to validate specific types of input data.
class-validator
Class-validator works with TypeScript and uses decorators to define validation rules within class definitions. It is different from Joi in that it integrates tightly with TypeScript and leverages its type system for validation.
Keywords
FAQs
Object schema validation
The npm package joi receives a total of 15,097,402 weekly downloads. As such, joi popularity was classified as popular.
We found that joi demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
Package last updated on 30 Mar 2026
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Research
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Research
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