Run twilio service worker next to flutter service worker

[mortht]

Run twilio service worker next to flutter service worker instead of replacing it.

Thx for the twilio-voice package and the example app.

I'll tried to find a way to get rid of the manual post-build step replace the twilio-sw.js file.
Here is what I came up with. Let me know what you think.

Kind regards,
Thiemo

[cybex-dev]

Hi Thiemo,

This solution initially worked but was not reliable in sending messages to the SW. If memory serves, it had some trouble in production too.

For this reason, I've created packages:

• js_notifications to address the lack of customisable notifications on Flutter Web
• web_callkit as a drop in replacement for call management on Flutter Web

These 2 have been added in 0.3.x with minor version bump, see: 9fdd508

Loading these javascript files as a blob or pre-loading in HTML seems to cause some problems - this is however something I hope to address soon.

[cybex-dev]

As easy as this solution would be, it has unfortunately caused some issues for Flutter to find the managed service worker, thus sending messages to the SW fail. The only solution is a "hack" I left in by requesting the user to soft refresh the page.