How to Load a Local JSON File in SvelteKit

Discover the proper method to load a local JSON file in your `SvelteKit` app with detailed explanations and code examples.
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How to Load a Local JSON File in SvelteKit

When building application interfaces with SvelteKit, retrieving data from local files can be a straightforward yet sometimes tricky process. If you've found yourself struggling with loading a local JSON file—specifically, you've noticed that your data is coming through as undefined—you're not alone! Let's delve into the solution step by step to ensure you can effectively pull in your JSON data from the static directory.

The Problem

Example of Code Attempted

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

This attempt raises the question: What went wrong?

Understanding the Solution

Correcting the Fetch Path

Using the Load Function

In newer versions of SvelteKit, the preload function has been replaced by the load function, which is designed to simplify the process for fetching data. Here’s how you can redefine your code:

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

Summary of Changes

Change the Fetch Path: Always ensure you have the correct relative or absolute path. In this case, start with a leading / for root access.

Update Function Usage: Adopt the load function instead of preload.

Final Code Snippet

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

Conclusion

Following these adjustments, you should successfully retrieve your local JSON data without ending up with "undefined" in your console. Adapting to newer versions of libraries like SvelteKit can often involve small changes that yield significant results, so always keep an eye on the documentation for updates and best practices. Happy coding!