Function isVerticallyScrollable

src/hold-stream.ts:166–177

(el: HTMLElement)

  "pre, textarea, [data-sh-scroll], .sh-nested-scroll, .sh-thinking-body";

function isVerticallyScrollable(el: HTMLElement): boolean {
  if (el.scrollHeight <= el.clientHeight + 1) {
    return false;
  }
  const style = getComputedStyle(el);
  return (
    style.overflowY === "auto" ||
    style.overflowY === "scroll" ||
    style.overflow === "auto" ||
    style.overflow === "scroll"
  );
}

/**
 * Follow the stream inside capped overflow regions (e.g. `<pre>` code blocks).