Function checkElementRemoved

src/utils/dom.ts:44–58

(node: Node, element: HTMLElement)

    window.MutationObserver || window.WebKitMutationObserver

  const checkElementRemoved = (node: Node, element: HTMLElement) => {
    if (node === element) {
      return true
    }
    if (isElement(node)) {
      const children = (node as HTMLElement).children
      let length = children.length
      while (length--) {
        if (checkElementRemoved(children[length], element)) {
          return true
        }
      }
    }
    return false
  }

  const useMutation = (element: HTMLElement, callback: () => void) => {
    const observer = new MutationObserver((mutations, observer) => {