Function toString

src/useEditable.ts:30–51

(element: HTMLElement)

  (event.metaKey || event.ctrlKey) && !event.altKey && event.code === 'KeyZ';

const toString = (element: HTMLElement): string => {
  const queue: Node[] = [element.firstChild!];

  let content = '';
  let node: Node;
  while ((node = queue.pop()!)) {
    if (node.nodeType === Node.TEXT_NODE) {
      content += node.textContent;
    } else if (node.nodeType === Node.ELEMENT_NODE && node.nodeName === 'BR') {
      content += '\n';
    }

    if (node.nextSibling) queue.push(node.nextSibling);
    if (node.firstChild) queue.push(node.firstChild);
  }

  // contenteditable Quirk: Without plaintext-only a pre/pre-wrap element must always
  // end with at least one newline character
  if (content[content.length - 1] !== '\n') content += '\n';

  return content;
};

const setStart = (range: Range, node: Node, offset: number) => {
  if (offset < node.textContent!.length) {