in src/core/plugins/deep-linking/layout.js [138:156]
function getScrollParent(element, includeHidden) {
const LAST_RESORT = document.documentElement
let style = getComputedStyle(element)
const excludeStaticParent = style.position === "absolute"
const overflowRegex = includeHidden ? /(auto|scroll|hidden)/ : /(auto|scroll)/
if (style.position === "fixed")
return LAST_RESORT
for (let parent = element; (parent = parent.parentElement);) {
style = getComputedStyle(parent)
if (excludeStaticParent && style.position === "static") {
continue
}
if (overflowRegex.test(style.overflow + style.overflowY + style.overflowX))
return parent
}
return LAST_RESORT
}