Скачать или смотреть NextJS Type Error: How to Properly Pass Props to Children Components

Learn how to resolve type errors in NextJS when passing props to child components by following our simple and detailed guide.
---
This video is based on the question https://stackoverflow.com/q/72264492/ asked by the user 'gomark' ( https://stackoverflow.com/u/15866058/ ) and on the answer https://stackoverflow.com/a/72269670/ provided by the user 'lpizzinidev' ( https://stackoverflow.com/u/13211263/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: NextJS type error while passing props to children

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Resolving NextJS Type Error When Passing Props to Children Components

In the world of web development, using frameworks like NextJS can sometimes lead to challenging scenarios, especially when dealing with TypeScript. One common issue developers encounter is a type error when passing props to child components. If you've been experiencing this troublesome situation, fear not! In this post, we’ll walk you through the steps to effectively resolve it.

Understanding the Problem

When building a NextJS application, you might want to fetch data and pass it down to your child components. However, if the type definitions and props handling are incorrectly set up, you may encounter type errors. Here’s the key error we’re addressing:

[[See Video to Reveal this Text or Code Snippet]]

This error typically indicates that there is a mismatch between how you're passing props and how they are expected to be received by the child components.

Assessing the Type Definitions

Before we dive into the solution, let’s take a moment to review the types you've defined. Here are two type definitions:

[[See Video to Reveal this Text or Code Snippet]]

Fixing the Props Passing

To ensure that your components receive the props correctly, you need to follow these adjustments:

1. Correctly Passing Props in the Parent Component

In your Index component where the props services and technologies are passed to child components, you should avoid spreading the array using the ... syntax. Instead, simply pass the props as follows:

[[See Video to Reveal this Text or Code Snippet]]

2. Adjusting the Child Component Declaration

Your child component ServicesBlock must be updated to expect an object containing the services prop, instead of an array directly. Update it like so:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following the changes outlined above, you will be able to pass props to your child components without encountering type errors in your NextJS application. Ensuring correct prop types and structure is key to following TypeScript's strict type-checking rules effectively.

Recap of Changes

Remove the spread operator when passing props to child components.

Update child component declaration to expect props as an object.

These simple changes will help you maintain type safety while developing your NextJS applications with TypeScript.

Remember that building with NextJS and TypeScript provides a robust framework for developing high-quality applications. Don't hesitate to refer back to this guide whenever you encounter similar issues in the future!