Use webextension-polyfill

[peterhil]

Use webextension-polyfill

Try out WebExtensions polyfill by Mozilla or Web-Extension Polyfill for TypeScript if using Typescript already.

• Basic setup
• Using promise based APIs
• Examples
• Usage with Typescript
• Known limitations

Highlights

Two way messaging

It's also possible to use Promises effectively using two-way messaging. Communication between a background page and a tab content script, for example, looks something like this from the background page side:

browser.tabs.sendMessage(tabId, "get-ids").then(results => {
  processResults(results);
});

[peterhil]

Replaced Rosegarden with webextension-polyfill, because Chrome’s new promisified APIs did not work with Rosegarden.