When hosting Blazor Wasm on Github Pages, all my repositories have the same origin. So localStorage items are shared among all my repositories.

So, I want an option to prefix every key with the current location.pathname

Workaround is to patch JS methods like in this example:

https://github.com/TomasHubelbauer/github-pages-local-storage/blob/main/index.js

localStorage.constructor.prototype.getItem = (key) => getItem.apply(localStorage, [location.pathname + ':' + key]);

Or manually add prefixes to all method calls.