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Zod Length Constraints: Minimum and Maximum
In Zod, length constraints are used to control how short, long, or exact a value can be using the .min(), .max(), and .length() methods. Length constraints in Zod solve real…
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Zod Coerce: 5+ Edge Cases with Examples
Zod coerce is a feature that automatically converts input values to the desired data type before applying validation. In real applications, most user input and query parameters arrive as strings,…
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Zod Literals: Edge Cases with Examples
zod.literal — a Zod schema that validates a single literal value or an array of literals, ensuring only specific allowed values pass validation. It prevents invalid or unexpected values in…
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How to Share Zod Schemas for Frontend and Backend
In modern web development, keeping validation logic consistent across frontend and backend is crucial. By using Zod, you can define a single source of truth with shared schemas. When your…
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Build Type-Safe React Forms with Zod v4 and React Hook Form v7
Combining Zod with React Hook Form (RHF) creates a powerful and developer-friendly approach to building modern forms in React. Zod brings end-to-end type safety—ensuring your form data always matches your…
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Yup Object: .defined() Method, Difference from .required() Validation
Yup object refers to a schema-based way of validating JavaScript objects by defining the shape, allowed keys, and validation rules for each property. The yup.object() schema is specifically designed to…
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Yup String Validation: The Complete Guide
Validating text inputs is one of the most common needs in web forms and APIs. Whether you’re handling usernames, passwords, emails, or formatted strings like phone numbers and dates, ensuring…
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Yup Array Validation: The Complete Guide
Yup validator makes it easy to validate arrays of data in JavaScript and TypeScript applications. You can define arrays containing strings, numbers, objects, enums, or even nested structures. Each element…
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Yup Schema Validation: Forms, API Inputs, Docs
Yup is a JavaScript and TypeScript schema validation library that allows developers to define and enforce rules for data structures in a simple and declarative way. It is widely used…
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Metadata & Registries in Zod
In Zod v4 , metadata and registries form powerful complementary systems that let developers annotate schemas with additional information and organize them for discovery and tooling support. They don’t interfere…
