in packages/core/src/models/Viewport.ts [107:121]
get isScrollBottom() {
if (this.isIframe) {
if (!this.contentWindow?.document?.body) return false
return (
this.height + this.contentWindow.scrollY >=
this.contentWindow.document.body.scrollHeight
)
} else if (this.viewportElement) {
if (!this.viewportElement) return false
return (
this.viewportElement.offsetHeight + this.viewportElement.scrollTop >=
this.viewportElement.scrollHeight
)
}
}