How can website detect if vimium-c is running?

[gqqnbig]

Some vimium-c keybindings conflicts when the shortcuts on my website.

I would like my website to detect if users are using vimium-c and give a message.

How can website detect if vimium-c is running?

[gdh1995]

Um, currently no a unified method to do this, because Vimium and Vimium C are trying to avoid "influence" normal web pages (there've been some discussions in Vimium's Issues panel).

Anyway, there indeed exist some methods to detect it. For example:

• on Firefox, check window.__VimiumC_priv__ != null
• on Chrome, use a XHR to request chrome-extension://hfjbmagddngcpeloejdejnfgbamkjaeg/lib/injector.js
• on Chrome and before Vimium C v1.81 (not released yet), you can:
  • check ["()=>1", "() => 1"].includes("" + ((__VimiumC_)=>1))
  • the reason is Vimium C replaces all function body whose .indexOf('__VimiumC_') > 0 with "" + (() => 1), so you can do such a test
  • but this strange logic is just a typo and will be removed in Vimium C v1.81, in up to a month.