window 'blur' and 'focus' not handled

[akania]

When window gets or loses focus 'blur' and 'focus' event callbacks are not called.
I expect that these will be triggered
ifvisible.on('blur', () => console.log('ifvisible blur callback'))
ifvisible.on('focus', () => console.log('ifvisible focus callback'))

Standard window events are triggered as expected
window.addEventListener('blur', () => console.log('window blur'))
window.addEventListener('focus', () => console.log('window focus'))

[serkanyersen]

ifvisible runs on the Page Visibility Api

it only works in these situations:

• visible : the page content may be at least partially visible. In practice this means that the page is the foreground tab of a non-minimized window.
• hidden : the page content is not visible to the user. In practice this means that the document is either a background tab or part of a minimized window, or the OS screen lock is active.

Implementation of these events might differ from browser to browser. Clicking outside of the window or switching to a different app while browser is still visible, will not trigger these events.

In the latest version, I've included a new method called ifvisible.legacyMode() if you run this method, it will work like you wanted.

Latest version here:
https://github.com/serkanyersen/ifvisible.js/releases/tag/v2.0.10