A proper way to register data, available to all custom components

[6r1d]

Hello.

I'd like add some Vue components to VitePress documentation, which would use some JSON data, downloaded periodically.
Where do I register a JS file, containing the JSON data, .vitepress/theme/index.ts, or .vitepress/config.ts?
Is it better to store data in some dictionary in the window object or some internal Vue store?
How do I wrap this code?

Thanks!