Rosegarden gives you the promises for writing cross platform webextensions on Chrome and other browsers missing the promise based API.
## Rationale
I know Mozilla provides webextension-polyfill, but I find even that too complicated.
With my Spellbook bookmark browser extension I promisified the required callback based methods from Chrome API and checked the chrome.runtime.lastError. Eventually I promisified the whole API, while planning on writing another cross platform browser extension.
I have used only bookmarks and tabs APIs, so beware when using other APIs, in case they differ between Firefox and Chrome.
## Usage
import { browser } from 'rosegarden'
Then just use that browser object as you would use the Mozilla's promise based WebExtension API!
It just gives the global object on Firefox, but on Chrome it gives a promisified version of the chrome global object. The browser object has chrome as prototype, so everything should work as expected as long as the APIs work in a similar way.
