Function update

src/useEditable.ts:203–212

(content: string)

  const edit = useMemo<Edit>(
    () => ({
      update(content: string) {
        const { current: element } = elementRef;
        if (element) {
          const position = getPosition(element);
          const prevContent = toString(element);
          position.position += content.length - prevContent.length;
          state.position = position;
          state.onChange(content, position);
        }
      },
      insert(append: string, deleteOffset?: number) {
        const { current: element } = elementRef;
        if (element) {