How to use std:kv-storage in browser extension?

Question

JavaScript

Inside the browser extension I am trying to load the repository But when I run it I get the following error
import { storage } from 'std:kv-storage';

Refused to load the script 'std:kv-storage' because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval'". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback.

I don't understand CPS directives at all. How to be? As I understand it, you need to register some kind of rule so that there is permission to download?