Update: README.md

[lucasrmendonca]

• Use '#' for headers instead of '===' and '---';
• Add highlighting to the npm installation script;
• Replace the CommonJS usage example with ESM Module usage example;
• Add background persistent property in the permissions section;
• Improve clarity on some messages;
• Change unordered list markers from '*' to '-';

[eight04]

• Replace the CommonJS usage example with ESM Module usage example;

Instead of replacing cjs example, it would be better to keep both of them e.g.

... cjs example ...

With Node.js@14+, you can load esm natively. Just import the default member from the package:

... esm example ...

• Add background persistent property in the permissions section;

Did you see any issue with event page?

[lucasrmendonca]

Instead of replacing cjs example, it would be better to keep both of them e.g. I agree, will change it to include both.

Did you see any issue with event page? I ran into this error: https://stackoverflow.com/questions/13326105/using-webrequest-api-with-event-page

[eight04]

I ran into this error: https://stackoverflow.com/questions/13326105/using-webrequest-api-with-event-page

What a silly bug. Then I suggest adding a note under the permission section:

> **Note**: `webRequest` is not available to event page. See https://stackoverflow.com/questions/13326105/using-webrequest-api-with-event-page

[lucasrmendonca]

What a silly bug. Then I suggest adding a note under the permission section:

I have included it in item 2. of the Permissions section:

To polyfill `launchWebAuthFlow`, this library uses following API/permissions:

...
2. `webRequest` - this library cannot be used with non-persistent background pages, otherwise you'll get an error. To avoid this, set your background page `persistent` key to `true`.

What do you think of just updating it to include the stack overflow URL instead of adding the note?