Solving the Type is not assignable to type Error in TypeScript with Storybook

Discover effective solutions to resolve the 'Type is not assignable to type' error in your TypeScript Storybook projects. Useful for developers tackling button component conversions.
---
This video is based on the question https://stackoverflow.com/q/67764516/ asked by the user 'Anders Kitson' ( https://stackoverflow.com/u/2949184/ ) and on the answer https://stackoverflow.com/a/67764854/ provided by the user 'michmich112' ( https://stackoverflow.com/u/11521081/ ) 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: Type is not assignable to type | Learning type script and story book at the same time

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

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding and Resolving TypeScript Assignment Errors in Storybook

When venturing into the world of TypeScript, especially while working on component libraries like Storybook, developers often face challenges that can be perplexing. One common issue is the error message: Type is not assignable to type. In this article, we'll walk through a real-world scenario where this error occurs, specifically when converting a React button component from JavaScript to TypeScript (TSX).

The Problem: Error in Button Component

While working on converting a default button component in Storybook to TypeScript, many developers encounter this error, particularly when the props not aligning correctly. Here’s a brief look at the key error message being reported:

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

The source of confusion lies in the incompatibility between the props defined and those being used within the component.

Breaking Down the Solution

Understanding the Type Error

The main problem arises because the component's props don't match the specified ButtonProps. The optional properties in the props definition create confusion for TypeScript, resulting in the error when those props are applied to the component.

Solution 1: Specifying Props in Component Declaration

To resolve this issue, you can ensure that your Button component explicitly states its required props by aligning it with the ButtonProps interface. Here is how you can do this:

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

Solution 2: Creating an Actual Props Interface

If your component accepts props that differ from those defined in your interface, it can help to define an explicit interface for the actual props being used. Here’s an example of how to structure this:

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

You would then use the ActualButtonProps interface in your Storybook template like this:

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

Conclusion

Understanding how to effectively work with TypeScript in conjunction with Storybook can be tricky. However, by aligning your component's prop types with its defined interfaces, you can avoid common pitfalls like the dreaded Type is not assignable to type error. By following the strategies outlined in this article, you can create robust, type-safe components that enhance your user interface development experience.

Remember, TypeScript is there to help catch errors early and improve the quality of your code. Embrace these type-checking tools, and don’t hesitate to consult the documentation or community for more guidance!

Видео Solving the Type is not assignable to type Error in TypeScript with Storybook канала vlogize