How to read local files in the context of a browser extension?

Question

JavaScript

I am writing a browser extension. To work, you need to store somewhere and somehow read a fairly large (up to 50 megabytes) array BigUint64Array. The most logical option for me is to store in a file and read it at startup. But how to implement this without user intervention (input)? I suppose if you somehow embed it in the code, then the page loading speed will significantly decrease, and if you download from the server, then people in incognito mode will have to download conditional 50 megabytes after each browser launch ...

Answer 1

Add "unlimitedStorage"to manifest.json
And store it in browser.storage.localor in IndexedDB.
Bonus:
chrome.storage.local.get(console.log);

Answer 2

As mentioned above, the extension has a store. The client does not even need to know about it)