Importing JSON file in TypeScript

Importing JSON file in TypeScript 📥

Are you trying to import a JSON file into your TypeScript project and facing some challenges? Don't worry, we've got you covered! In this guide, we'll address common issues and provide easy solutions so you can effortlessly import your JSON file.

The Problem 👾

Let's start by understanding the problem you encountered. You have a JSON file that contains your color palette, and you want to import it into a .tsx file. However, when you try to access a specific color value, TypeScript throws an error with the message: "Property 'primaryMain' does not exist on type 'typeof "*.json".'"

The Solution 🛠️

To resolve this issue, you need to properly define the type of the imported JSON file. Here's how you can do that:

1. Create a TypeScript declaration file (e.g., typings.d.ts) if you haven't already.

2. Add the following declaration to the declaration file:

declare module "*.json" {
  const value: any;
  export default value;
}

This declaration tells TypeScript that when it encounters a .json file during the import, treat it as any type of value.

1. Now, in your .tsx file, import the JSON file using the following syntax:

import colors from '../colors.json';

1. Finally, you can access individual color values from the imported JSON file. For example, to access the primaryMain color, you can use:

const primaryMainColor = colors.primaryMain;

By properly declaring the module for JSON files and importing them correctly, TypeScript will no longer throw the error you encountered.

Example Code 💻

To make it clearer, let's summarize the steps using your code example:

In typings.d.ts:

declare module "*.json" {
  const value: any;
  export default value;
}

In your .tsx file:

import colors from '../colors.json';

const primaryMainColor = colors.primaryMain;

With these changes, you should be able to import your JSON file without any TypeScript errors.

Go ahead and try it out! 🚀

Now that you have the solution at hand, give it a shot and see if it resolves your issue. Importing JSON files in TypeScript can be tricky, but by following these steps, you'll be on your way to success.

If you have any questions or face any other challenges, feel free to leave a comment below. We're here to help!

Happy coding! 💻✨