Uncaught TypeError: Cannot read property 'add' of undefined

[joepsyko]

I upgraded from 1.1.5 to 1.2.0 and now I have the following issue.

When executing instance.hide()

buttons: [
    ['<button>Dismiss</button>', (instance, toast) => {
        instance.hide({
            transitionOut: 'fadeOutUp',
            onClosing: (instance, toast, closedBy) => {
                // ...
            }
        }, toast, 'close', 'btn2');
    }, true],
],

I have the following error:
Uncaught TypeError: Cannot read property 'add' of undefined

Here is the line:

$toast.classList.add(PLUGIN_NAME+'-closing');

Anyone had the same problem?

[ferdiebergado]

I also have the same problem.

[marcelodolza]

I'll check, thank you.

[Alekzv9]

I think that is because the implementation of the hide method changes, now its like this:
iziToast.hide(toast, {
transitionOut: 'fadeOutUp'
});

[joepsyko]

It works, thank you!

[vagh]

@Dolce This problem is also exits in current verision on your document, Hope you can modifiy this example code in you doc page.