Cannot get format=relative to display seconds about relative-time-element HOT 2 OPEN

Sounds like this is a bug. Following the code I can't see where there's a problem. If you would kindly submit a PR with some failing tests we can investigate further.

from relative-time-element.

Of the non-deprecated formats, only format="duration" is showing and updating with seconds precision.
The default (no format attribute) and format="relative" doesn't update until after 1 min has passed.

duration is not a replacement for relative because it doesn't have the prefix/suffix: "X seconds" vs "X seconds ago".

Tested with v4.3.1.

I think I found the issue debugging with devtools:

Times in the past (like -X seconds) would always enter the if branch and format the value 0 ("now") instead of the number of seconds.

Maybe what was meant is:

    if (unit === 'second' && Math.abs(int) < 10) {
        return relativeFormat.format(0, 'second');
    }

Such that we don't show "now", 1, 2, 3..., 9, but instead go "now", 10, 11, ...

I'm not sure though, I think that's unspecified behavior.

I traced it back to 6118a16.

from relative-time-element.