🚀 Unlock seamless form validation in your React Native app with Yup! 🎉

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2 min read

Yup is a schema builder designed for runtime value parsing and validation. With Yup, you can define schemas, transform values to match specific criteria, and assert the shape of existing values—all in one go. Whether you're dealing with simple data models or complex, interdependent validations, Yup's schemas are expressive and versatile.

Key Features of Yup (v1.0.0):

  • Concise and Expressive Schema Interface: Yup makes it easy to model both simple and complex data models with a straightforward yet powerful interface.

  • Powerful TypeScript Support: Infer static types directly from your schema, or ensure your schema correctly implements a type, making your code more reliable.

  • Built-in Async Validation: Yup seamlessly supports asynchronous validation, making it perfect for both client-side and server-side validation scenarios.

  • Extensible: Need more? Extend Yup by adding your own type-safe methods and schemas to tailor it to your specific needs.

  • Rich Error Details: Debugging validation issues is a breeze with Yup's detailed error messages.

🚀 Why Choose Yup? Although classic JavaScript validation works, Yup offers a more robust, efficient, and scalable solution for complex validations, especially when combined with TypeScript.

💻 Simplify your validation processes with Yup and take your React Native apps to the next level!

How to use yup

1 use this command in your terminal -'npm i yup'

  1. Import it using -import { object, string, number, date, InferType } from 'yup' or you can import all without Destructuring - import * as Yup from 'yup'

     import {StyleSheet, Text, View} from 'react-native';
     import React from 'react';
     //from validation
     import * as Yup from 'yup';
     const PasswordSchema = Yup.object().shape({
       passwordLength: Yup.number()
         .min(4, 'should me min of 4 characters')
         .max(16, 'should be max of 16 characters')
         .required('passwordLength is required'),
     });
    
     const App = () => {
       return (
         <View>
           <Text style={styles.text}>App</Text>
         </View>
       );
     };
    
     export default App;
    
     const styles = StyleSheet.create({
       text: {fontSize: 100},
     });
    
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