Firefox warning: InstallTrigger is deprecated and will be removed in the future.

[kashav]

Describe the bug
I see this warning in Firefox console on content pages.

InstallTrigger is deprecated and will be removed in the future. utils.js:30:22

To Reproduce
Steps to reproduce the behavior:

1. Download a recent-ish Firefox Nightly, I'm using 20220322065927.
2. Install Vimium, perhaps in a fresh profile.
3. Go to https://example.com or any other website.
4. Open the console.

Browser and Vimium version

Browser: Firefox Nightly 100.0a1 20220322065927
Vimium: 1.67.1

[kashav]

Looks like it was deprecated in https://bugzilla.mozilla.org/show_bug.cgi?id=1754441.

Here's the line in Vimium: https://github.com/philc/vimium/blob/master/lib/utils.js#L29-L31.

[davidrunger]

Here's a permalink to the line in Vimium:

vimium/lib/utils.js

Line 23 in 97729f7

const isFirefox = typeof InstallTrigger !== 'undefined';

[gdh1995]

Just a note: On Firefox 106.0b4, extensions.InstallTrigger.enabled on about:blank is default to false, while 106.0b9 makes it true again (#3774 (comment)).