Add abort-controller polyfill

[adonesky1]

Add abort-controller polyfill

Description

• FIXED:

  • Add abort-controller polyfill, which fixes the broken contract in release v15.0.0 where we introduced a use of AbortController without updating the node engine requirement in package.json to atleast node v15.0.0 where support for AbortController was added.

[rekmarks]

LGTM!

abort-controller excludes its shim / polyfill in the browser (see here). When we add this to the extension, I think we should remove abortcontroller-polyfill from its production dependencies, because all of our supported browsers ship it (see here).

[Gudahtt]

We support Chromium version 63 and above, but AbortController wasn't added until version 66. So I don't think we can remove the polyfill from the extension without dropping support for those versions.

[rekmarks]

We support Chromium version 63 and above, but AbortController wasn't added until version 66. So I don't think we can remove the polyfill from the extension without dropping support for those versions.

For reference, here's browser usage for Chromium as of today:

npx browserslist '>= 0.25%'

chrome 92
chrome 91
chrome 90
chrome 87
edge 92
edge 91