Yup is a JavaScript schema builder for value parsing and validation. It provides a simple and intuitive way to define schemas for validating data shapes and types. With Yup, you can easily create validation rules for objects, arrays, strings, numbers, and more, making it ideal for form validation and data processing tasks.
Zod is a TypeScript-first schema declaration and validation library that focuses on simplicity, type-safety, and developer experience. It allows you to define schemas for data validation and parsing with a concise and intuitive syntax, leveraging the power of TypeScript's type system. Zod provides a rich set of validation methods and error handling capabilities, making it easy to ensure data integrity and consistency in your applications.
Alternatives:
yup-+
joi-+
superstruct-+
io-ts-+
ajv-+
class-validator-+
runtypes-+
computed-types-+
typescript-is-+
vest-+
Tags: typescriptvalidationschemadatatype-safety
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Popularity
Both Yup and Zod are popular libraries for data validation in JavaScript and TypeScript. Yup has been around for longer and has a larger user base, but Zod has gained popularity in recent years due to its focus on TypeScript support and developer-friendly API.
TypeScript Support
Zod is designed with TypeScript in mind and provides excellent TypeScript support out of the box. It offers strong type inference and allows you to define complex validation schemas using TypeScript types. Yup also has TypeScript support, but it requires additional type definitions to be installed.
API Design
Yup follows a more traditional and declarative API design, where you define validation schemas using chained methods. Zod, on the other hand, follows a more functional and composable API design, allowing you to create reusable validation functions using combinators.
Validation Features
Both libraries offer a wide range of validation features such as required fields, string length, number range, regular expressions, and more. Yup provides a larger set of built-in validation methods and supports custom validation functions. Zod focuses on providing a smaller set of core validation methods but allows for more advanced and complex validation scenarios.
Extensibility
Yup allows you to create custom validation methods and supports extending the schema with custom methods. Zod also supports custom validation functions and allows you to define custom types and schemas. Both libraries provide good extensibility options.
Performance
In terms of performance, Yup is known to be faster than Zod for simple validation scenarios. However, Zod performs better for complex validation scenarios due to its optimized runtime and lazy evaluation of validation rules.
Community and Documentation
Both Yup and Zod have active communities and are well-documented. Yup has been around for longer, so it has a larger community and more resources available. Zod, however, has a growing community and provides comprehensive documentation with examples and guides.
