MasonryInfiniteGrid onRequestAppend endlessly called

[feiyl]

Description

Excuse me, I use MasonryInfiniteGrid for building my infinte card view app.I don't know why the onRequestAppend function is constantly called, endlessly called unless I set threshold to 0. Do me a favor to explain why is it, maybe is there any monitor triggered?

Steps to check or reproduce

[daybrush]

@feiyl

Perhaps it is correct that requestAppend is called every time you scroll when the threshold is reached.

If not this case, is there such a case?

The case of blocking requestAppend is as follows.

1. Adding data https://naver.github.io/egjs-infinitegrid/Guides#use-wait--ready
2. Last data

onRequestAppend={() => {
    if (this.lastItems) {
       return;
    }
}}